Modified: 
websites/production/commons/content/proper/commons-logging/apidocs/src-html/org/apache/commons/logging/impl/WeakHashtable.html
==============================================================================
--- 
websites/production/commons/content/proper/commons-logging/apidocs/src-html/org/apache/commons/logging/impl/WeakHashtable.html
 (original)
+++ 
websites/production/commons/content/proper/commons-logging/apidocs/src-html/org/apache/commons/logging/impl/WeakHashtable.html
 Thu Jul  4 12:10:51 2024
@@ -1,7 +1,7 @@
 <!DOCTYPE HTML>
 <html lang="en">
 <head>
-<!-- Generated by javadoc (21) -->
+<!-- Generated by javadoc (17) -->
 <title>Source code</title>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta name="description" content="source: package: 
org.apache.commons.logging.impl, class: WeakHashtable">
@@ -43,477 +43,486 @@
 <span class="source-line-no">030</span><span id="line-30">import 
java.util.Set;</span>
 <span class="source-line-no">031</span><span id="line-31"></span>
 <span class="source-line-no">032</span><span id="line-32">/**</span>
-<span class="source-line-no">033</span><span id="line-33"> * Implementation of 
{@code Hashtable} that uses {@code WeakReference}'s</span>
+<span class="source-line-no">033</span><span id="line-33"> * Implements {@code 
Hashtable} to use {@code WeakReference}'s</span>
 <span class="source-line-no">034</span><span id="line-34"> * to hold its keys 
thus allowing them to be reclaimed by the garbage collector.</span>
 <span class="source-line-no">035</span><span id="line-35"> * The associated 
values are retained using strong references.</span>
 <span class="source-line-no">036</span><span id="line-36"> * &lt;p&gt;</span>
 <span class="source-line-no">037</span><span id="line-37"> * This class 
follows the semantics of {@code Hashtable} as closely as</span>
 <span class="source-line-no">038</span><span id="line-38"> * possible. It 
therefore does not accept null values or keys.</span>
-<span class="source-line-no">039</span><span id="line-39"> * &lt;p&gt;</span>
-<span class="source-line-no">040</span><span id="line-40"> * 
&lt;strong&gt;Note:&lt;/strong&gt;</span>
-<span class="source-line-no">041</span><span id="line-41"> * This is 
&lt;em&gt;not&lt;/em&gt; intended to be a general purpose hash table 
replacement.</span>
-<span class="source-line-no">042</span><span id="line-42"> * This 
implementation is also tuned towards a particular purpose: for use as a 
replacement</span>
-<span class="source-line-no">043</span><span id="line-43"> * for {@code 
Hashtable} in {@code LogFactory}. This application requires</span>
-<span class="source-line-no">044</span><span id="line-44"> * good liveliness 
for {@code get} and {@code put}. Various tradeoffs</span>
-<span class="source-line-no">045</span><span id="line-45"> * have been made 
with this in mind.</span>
-<span class="source-line-no">046</span><span id="line-46"> * &lt;p&gt;</span>
-<span class="source-line-no">047</span><span id="line-47"> * 
&lt;strong&gt;Usage:&lt;/strong&gt; typical use case is as a drop-in 
replacement</span>
-<span class="source-line-no">048</span><span id="line-48"> * for the {@code 
Hashtable} used in {@code LogFactory} for J2EE environments</span>
-<span class="source-line-no">049</span><span id="line-49"> * running 1.3+ 
JVMs. Use of this class &lt;i&gt;in most cases&lt;/i&gt; (see below) will</span>
-<span class="source-line-no">050</span><span id="line-50"> * allow class 
loaders to be collected by the garbage collector without the need</span>
-<span class="source-line-no">051</span><span id="line-51"> * to call {@link 
org.apache.commons.logging.LogFactory#release(ClassLoader) 
LogFactory.release(ClassLoader)}.</span>
-<span class="source-line-no">052</span><span id="line-52"> * &lt;p&gt;</span>
-<span class="source-line-no">053</span><span id="line-53"> * {@code 
org.apache.commons.logging.LogFactory} checks whether this class</span>
-<span class="source-line-no">054</span><span id="line-54"> * can be supported 
by the current JVM, and if so then uses it to store</span>
-<span class="source-line-no">055</span><span id="line-55"> * references to the 
{@code LogFactory} implementation it loads</span>
-<span class="source-line-no">056</span><span id="line-56"> * (rather than 
using a standard Hashtable instance).</span>
-<span class="source-line-no">057</span><span id="line-57"> * Having this class 
used instead of {@code Hashtable} solves</span>
-<span class="source-line-no">058</span><span id="line-58"> * certain issues 
related to dynamic reloading of applications in J2EE-style</span>
-<span class="source-line-no">059</span><span id="line-59"> * environments. 
However this class requires Java 1.3 or later (due to its use</span>
-<span class="source-line-no">060</span><span id="line-60"> * of {@link 
java.lang.ref.WeakReference} and associates).</span>
-<span class="source-line-no">061</span><span id="line-61"> * And by the way, 
this extends {@code Hashtable} rather than {@code HashMap}</span>
-<span class="source-line-no">062</span><span id="line-62"> * for backwards 
compatibility reasons. See the documentation</span>
-<span class="source-line-no">063</span><span id="line-63"> * for method {@code 
LogFactory.createFactoryStore} for more details.</span>
-<span class="source-line-no">064</span><span id="line-64"> * &lt;p&gt;</span>
-<span class="source-line-no">065</span><span id="line-65"> * The reason all 
this is necessary is due to a issue which</span>
-<span class="source-line-no">066</span><span id="line-66"> * arises during hot 
deploy in a J2EE-like containers.</span>
-<span class="source-line-no">067</span><span id="line-67"> * Each component 
running in the container owns one or more class loaders; when</span>
-<span class="source-line-no">068</span><span id="line-68"> * the component 
loads a LogFactory instance via the component class loader</span>
-<span class="source-line-no">069</span><span id="line-69"> * a reference to it 
gets stored in the static LogFactory.factories member,</span>
-<span class="source-line-no">070</span><span id="line-70"> * keyed by the 
component's class loader so different components don't</span>
-<span class="source-line-no">071</span><span id="line-71"> * stomp on each 
other. When the component is later unloaded, the container</span>
-<span class="source-line-no">072</span><span id="line-72"> * sets the 
component's class loader to null with the intent that all the</span>
-<span class="source-line-no">073</span><span id="line-73"> * component's 
classes get garbage-collected. However there's still a</span>
-<span class="source-line-no">074</span><span id="line-74"> * reference to the 
component's class loader from a key in the "global"</span>
-<span class="source-line-no">075</span><span id="line-75"> * {@code 
LogFactory}'s factories member! If {@code LogFactory.release()}</span>
-<span class="source-line-no">076</span><span id="line-76"> * is called 
whenever component is unloaded, the class loaders will be correctly</span>
-<span class="source-line-no">077</span><span id="line-77"> * garbage 
collected; this &lt;i&gt;should&lt;/i&gt; be done by any container that</span>
-<span class="source-line-no">078</span><span id="line-78"> * bundles 
commons-logging by default. However, holding the class loader</span>
-<span class="source-line-no">079</span><span id="line-79"> * references weakly 
ensures that the class loader will be garbage collected</span>
-<span class="source-line-no">080</span><span id="line-80"> * without the 
container performing this step.</span>
-<span class="source-line-no">081</span><span id="line-81"> * &lt;p&gt;</span>
-<span class="source-line-no">082</span><span id="line-82"> * 
&lt;strong&gt;Limitations:&lt;/strong&gt;</span>
-<span class="source-line-no">083</span><span id="line-83"> * There is still 
one (unusual) scenario in which a component will not</span>
-<span class="source-line-no">084</span><span id="line-84"> * be correctly 
unloaded without an explicit release. Though weak references</span>
-<span class="source-line-no">085</span><span id="line-85"> * are used for its 
keys, it is necessary to use strong references for its values.</span>
+<span class="source-line-no">039</span><span id="line-39"> * &lt;/p&gt;</span>
+<span class="source-line-no">040</span><span id="line-40"> * &lt;p&gt;</span>
+<span class="source-line-no">041</span><span id="line-41"> * 
&lt;strong&gt;Note:&lt;/strong&gt;</span>
+<span class="source-line-no">042</span><span id="line-42"> * This is 
&lt;em&gt;not&lt;/em&gt; intended to be a general purpose hash table 
replacement.</span>
+<span class="source-line-no">043</span><span id="line-43"> * This 
implementation is also tuned towards a particular purpose: for use as a 
replacement</span>
+<span class="source-line-no">044</span><span id="line-44"> * for {@code 
Hashtable} in {@code LogFactory}. This application requires</span>
+<span class="source-line-no">045</span><span id="line-45"> * good liveliness 
for {@code get} and {@code put}. Various tradeoffs</span>
+<span class="source-line-no">046</span><span id="line-46"> * have been made 
with this in mind.</span>
+<span class="source-line-no">047</span><span id="line-47"> * &lt;/p&gt;</span>
+<span class="source-line-no">048</span><span id="line-48"> * &lt;p&gt;</span>
+<span class="source-line-no">049</span><span id="line-49"> * 
&lt;strong&gt;Usage:&lt;/strong&gt; typical use case is as a drop-in 
replacement</span>
+<span class="source-line-no">050</span><span id="line-50"> * for the {@code 
Hashtable} used in {@code LogFactory} for J2EE environments</span>
+<span class="source-line-no">051</span><span id="line-51"> * running 1.3+ 
JVMs. Use of this class &lt;i&gt;in most cases&lt;/i&gt; (see below) will</span>
+<span class="source-line-no">052</span><span id="line-52"> * allow class 
loaders to be collected by the garbage collector without the need</span>
+<span class="source-line-no">053</span><span id="line-53"> * to call {@link 
org.apache.commons.logging.LogFactory#release(ClassLoader) 
LogFactory.release(ClassLoader)}.</span>
+<span class="source-line-no">054</span><span id="line-54"> * &lt;/p&gt;</span>
+<span class="source-line-no">055</span><span id="line-55"> * &lt;p&gt;</span>
+<span class="source-line-no">056</span><span id="line-56"> * {@code 
org.apache.commons.logging.LogFactory} checks whether this class</span>
+<span class="source-line-no">057</span><span id="line-57"> * can be supported 
by the current JVM, and if so then uses it to store</span>
+<span class="source-line-no">058</span><span id="line-58"> * references to the 
{@code LogFactory} implementation it loads</span>
+<span class="source-line-no">059</span><span id="line-59"> * (rather than 
using a standard Hashtable instance).</span>
+<span class="source-line-no">060</span><span id="line-60"> * Having this class 
used instead of {@code Hashtable} solves</span>
+<span class="source-line-no">061</span><span id="line-61"> * certain issues 
related to dynamic reloading of applications in J2EE-style</span>
+<span class="source-line-no">062</span><span id="line-62"> * environments. 
However this class requires Java 1.3 or later (due to its use</span>
+<span class="source-line-no">063</span><span id="line-63"> * of {@link 
java.lang.ref.WeakReference} and associates).</span>
+<span class="source-line-no">064</span><span id="line-64"> * And by the way, 
this extends {@code Hashtable} rather than {@code HashMap}</span>
+<span class="source-line-no">065</span><span id="line-65"> * for backwards 
compatibility reasons. See the documentation</span>
+<span class="source-line-no">066</span><span id="line-66"> * for method {@code 
LogFactory.createFactoryStore} for more details.</span>
+<span class="source-line-no">067</span><span id="line-67"> * &lt;/p&gt;</span>
+<span class="source-line-no">068</span><span id="line-68"> * &lt;p&gt;</span>
+<span class="source-line-no">069</span><span id="line-69"> * The reason all 
this is necessary is due to a issue which</span>
+<span class="source-line-no">070</span><span id="line-70"> * arises during hot 
deploy in a J2EE-like containers.</span>
+<span class="source-line-no">071</span><span id="line-71"> * Each component 
running in the container owns one or more class loaders; when</span>
+<span class="source-line-no">072</span><span id="line-72"> * the component 
loads a LogFactory instance via the component class loader</span>
+<span class="source-line-no">073</span><span id="line-73"> * a reference to it 
gets stored in the static LogFactory.factories member,</span>
+<span class="source-line-no">074</span><span id="line-74"> * keyed by the 
component's class loader so different components don't</span>
+<span class="source-line-no">075</span><span id="line-75"> * stomp on each 
other. When the component is later unloaded, the container</span>
+<span class="source-line-no">076</span><span id="line-76"> * sets the 
component's class loader to null with the intent that all the</span>
+<span class="source-line-no">077</span><span id="line-77"> * component's 
classes get garbage-collected. However there's still a</span>
+<span class="source-line-no">078</span><span id="line-78"> * reference to the 
component's class loader from a key in the "global"</span>
+<span class="source-line-no">079</span><span id="line-79"> * {@code 
LogFactory}'s factories member! If {@code LogFactory.release()}</span>
+<span class="source-line-no">080</span><span id="line-80"> * is called 
whenever component is unloaded, the class loaders will be correctly</span>
+<span class="source-line-no">081</span><span id="line-81"> * garbage 
collected; this &lt;i&gt;should&lt;/i&gt; be done by any container that</span>
+<span class="source-line-no">082</span><span id="line-82"> * bundles 
commons-logging by default. However, holding the class loader</span>
+<span class="source-line-no">083</span><span id="line-83"> * references weakly 
ensures that the class loader will be garbage collected</span>
+<span class="source-line-no">084</span><span id="line-84"> * without the 
container performing this step.</span>
+<span class="source-line-no">085</span><span id="line-85"> * &lt;/p&gt;</span>
 <span class="source-line-no">086</span><span id="line-86"> * &lt;p&gt;</span>
-<span class="source-line-no">087</span><span id="line-87"> * If the abstract 
class {@code LogFactory} is</span>
-<span class="source-line-no">088</span><span id="line-88"> * loaded by the 
container class loader but a subclass of</span>
-<span class="source-line-no">089</span><span id="line-89"> * {@code 
LogFactory} [LogFactory1] is loaded by the component's</span>
-<span class="source-line-no">090</span><span id="line-90"> * class loader and 
an instance stored in the static map associated with the</span>
-<span class="source-line-no">091</span><span id="line-91"> * base LogFactory 
class, then there is a strong reference from the LogFactory</span>
-<span class="source-line-no">092</span><span id="line-92"> * class to the 
LogFactory1 instance (as normal) and a strong reference from</span>
-<span class="source-line-no">093</span><span id="line-93"> * the LogFactory1 
instance to the component class loader via</span>
-<span class="source-line-no">094</span><span id="line-94"> * {@code 
getClass().getClassLoader()}. This chain of references will prevent</span>
-<span class="source-line-no">095</span><span id="line-95"> * collection of the 
child class loader.</span>
-<span class="source-line-no">096</span><span id="line-96"> * &lt;p&gt;</span>
-<span class="source-line-no">097</span><span id="line-97"> * Such a situation 
occurs when the commons-logging.jar is</span>
-<span class="source-line-no">098</span><span id="line-98"> * loaded by a 
parent class loader (e.g. a server level class loader in a</span>
-<span class="source-line-no">099</span><span id="line-99"> * servlet 
container) and a custom {@code LogFactory} implementation is</span>
-<span class="source-line-no">100</span><span id="line-100"> * loaded by a 
child class loader (e.g. a web app class loader).</span>
-<span class="source-line-no">101</span><span id="line-101"> * &lt;p&gt;</span>
-<span class="source-line-no">102</span><span id="line-102"> * To avoid this 
scenario, ensure</span>
-<span class="source-line-no">103</span><span id="line-103"> * that any custom 
LogFactory subclass is loaded by the same class loader as</span>
-<span class="source-line-no">104</span><span id="line-104"> * the base {@code 
LogFactory}. Creating custom LogFactory subclasses is,</span>
-<span class="source-line-no">105</span><span id="line-105"> * however, rare. 
The standard LogFactoryImpl class should be sufficient</span>
-<span class="source-line-no">106</span><span id="line-106"> * for most or all 
users.</span>
-<span class="source-line-no">107</span><span id="line-107"> *</span>
-<span class="source-line-no">108</span><span id="line-108"> * @since 1.1</span>
-<span class="source-line-no">109</span><span id="line-109"> * @deprecated No 
longer used, will be removed in 2.0.</span>
-<span class="source-line-no">110</span><span id="line-110"> */</span>
-<span class="source-line-no">111</span><span id="line-111">@Deprecated</span>
-<span class="source-line-no">112</span><span id="line-112">public final class 
WeakHashtable extends Hashtable {</span>
-<span class="source-line-no">113</span><span id="line-113"></span>
-<span class="source-line-no">114</span><span id="line-114">    /** Entry 
implementation */</span>
-<span class="source-line-no">115</span><span id="line-115">    private final 
static class Entry implements Map.Entry {</span>
-<span class="source-line-no">116</span><span id="line-116"></span>
-<span class="source-line-no">117</span><span id="line-117">        private 
final Object key;</span>
-<span class="source-line-no">118</span><span id="line-118">        private 
final Object value;</span>
-<span class="source-line-no">119</span><span id="line-119"></span>
-<span class="source-line-no">120</span><span id="line-120">        private 
Entry(final Object key, final Object value) {</span>
-<span class="source-line-no">121</span><span id="line-121">            
this.key = key;</span>
-<span class="source-line-no">122</span><span id="line-122">            
this.value = value;</span>
-<span class="source-line-no">123</span><span id="line-123">        }</span>
-<span class="source-line-no">124</span><span id="line-124"></span>
-<span class="source-line-no">125</span><span id="line-125">        
@Override</span>
-<span class="source-line-no">126</span><span id="line-126">        public 
boolean equals(final Object o) {</span>
-<span class="source-line-no">127</span><span id="line-127">            boolean 
result = false;</span>
-<span class="source-line-no">128</span><span id="line-128">            if (o 
instanceof Map.Entry) {</span>
-<span class="source-line-no">129</span><span id="line-129">                
final Map.Entry entry = (Map.Entry) o;</span>
-<span class="source-line-no">130</span><span id="line-130">                
result =    (getKey()==null ?</span>
-<span class="source-line-no">131</span><span id="line-131">                    
                        entry.getKey() == null :</span>
-<span class="source-line-no">132</span><span id="line-132">                    
                        getKey().equals(entry.getKey())) &amp;&amp;</span>
-<span class="source-line-no">133</span><span id="line-133">                    
        (getValue()==null ?</span>
-<span class="source-line-no">134</span><span id="line-134">                    
                        entry.getValue() == null :</span>
-<span class="source-line-no">135</span><span id="line-135">                    
                        getValue().equals(entry.getValue()));</span>
-<span class="source-line-no">136</span><span id="line-136">            }</span>
-<span class="source-line-no">137</span><span id="line-137">            return 
result;</span>
-<span class="source-line-no">138</span><span id="line-138">        }</span>
-<span class="source-line-no">139</span><span id="line-139"></span>
-<span class="source-line-no">140</span><span id="line-140">        
@Override</span>
-<span class="source-line-no">141</span><span id="line-141">        public 
Object getKey() {</span>
-<span class="source-line-no">142</span><span id="line-142">            return 
key;</span>
-<span class="source-line-no">143</span><span id="line-143">        }</span>
-<span class="source-line-no">144</span><span id="line-144"></span>
-<span class="source-line-no">145</span><span id="line-145">        
@Override</span>
-<span class="source-line-no">146</span><span id="line-146">        public 
Object getValue() {</span>
-<span class="source-line-no">147</span><span id="line-147">            return 
value;</span>
-<span class="source-line-no">148</span><span id="line-148">        }</span>
-<span class="source-line-no">149</span><span id="line-149"></span>
-<span class="source-line-no">150</span><span id="line-150">        
@Override</span>
-<span class="source-line-no">151</span><span id="line-151">        public int 
hashCode() {</span>
-<span class="source-line-no">152</span><span id="line-152">            return 
(getKey()==null ? 0 : getKey().hashCode()) ^</span>
-<span class="source-line-no">153</span><span id="line-153">                
(getValue()==null ? 0 : getValue().hashCode());</span>
-<span class="source-line-no">154</span><span id="line-154">        }</span>
-<span class="source-line-no">155</span><span id="line-155"></span>
-<span class="source-line-no">156</span><span id="line-156">        
@Override</span>
-<span class="source-line-no">157</span><span id="line-157">        public 
Object setValue(final Object value) {</span>
-<span class="source-line-no">158</span><span id="line-158">            throw 
new UnsupportedOperationException("Entry.setValue is not supported.");</span>
-<span class="source-line-no">159</span><span id="line-159">        }</span>
-<span class="source-line-no">160</span><span id="line-160">    }</span>
-<span class="source-line-no">161</span><span id="line-161"></span>
-<span class="source-line-no">162</span><span id="line-162">    /** Wrapper 
giving correct symantics for equals and hash code */</span>
-<span class="source-line-no">163</span><span id="line-163">    private final 
static class Referenced {</span>
+<span class="source-line-no">087</span><span id="line-87"> * 
&lt;strong&gt;Limitations:&lt;/strong&gt;</span>
+<span class="source-line-no">088</span><span id="line-88"> * There is still 
one (unusual) scenario in which a component will not</span>
+<span class="source-line-no">089</span><span id="line-89"> * be correctly 
unloaded without an explicit release. Though weak references</span>
+<span class="source-line-no">090</span><span id="line-90"> * are used for its 
keys, it is necessary to use strong references for its values.</span>
+<span class="source-line-no">091</span><span id="line-91"> * &lt;/p&gt;</span>
+<span class="source-line-no">092</span><span id="line-92"> * &lt;p&gt;</span>
+<span class="source-line-no">093</span><span id="line-93"> * If the abstract 
class {@code LogFactory} is</span>
+<span class="source-line-no">094</span><span id="line-94"> * loaded by the 
container class loader but a subclass of</span>
+<span class="source-line-no">095</span><span id="line-95"> * {@code 
LogFactory} [LogFactory1] is loaded by the component's</span>
+<span class="source-line-no">096</span><span id="line-96"> * class loader and 
an instance stored in the static map associated with the</span>
+<span class="source-line-no">097</span><span id="line-97"> * base LogFactory 
class, then there is a strong reference from the LogFactory</span>
+<span class="source-line-no">098</span><span id="line-98"> * class to the 
LogFactory1 instance (as normal) and a strong reference from</span>
+<span class="source-line-no">099</span><span id="line-99"> * the LogFactory1 
instance to the component class loader via</span>
+<span class="source-line-no">100</span><span id="line-100"> * {@code 
getClass().getClassLoader()}. This chain of references will prevent</span>
+<span class="source-line-no">101</span><span id="line-101"> * collection of 
the child class loader.</span>
+<span class="source-line-no">102</span><span id="line-102"> * &lt;/p&gt;</span>
+<span class="source-line-no">103</span><span id="line-103"> * &lt;p&gt;</span>
+<span class="source-line-no">104</span><span id="line-104"> * Such a situation 
occurs when the commons-logging.jar is</span>
+<span class="source-line-no">105</span><span id="line-105"> * loaded by a 
parent class loader (e.g. a server level class loader in a</span>
+<span class="source-line-no">106</span><span id="line-106"> * servlet 
container) and a custom {@code LogFactory} implementation is</span>
+<span class="source-line-no">107</span><span id="line-107"> * loaded by a 
child class loader (e.g. a web app class loader).</span>
+<span class="source-line-no">108</span><span id="line-108"> * &lt;/p&gt;</span>
+<span class="source-line-no">109</span><span id="line-109"> * &lt;p&gt;</span>
+<span class="source-line-no">110</span><span id="line-110"> * To avoid this 
scenario, ensure</span>
+<span class="source-line-no">111</span><span id="line-111"> * that any custom 
LogFactory subclass is loaded by the same class loader as</span>
+<span class="source-line-no">112</span><span id="line-112"> * the base {@code 
LogFactory}. Creating custom LogFactory subclasses is,</span>
+<span class="source-line-no">113</span><span id="line-113"> * however, rare. 
The standard LogFactoryImpl class should be sufficient</span>
+<span class="source-line-no">114</span><span id="line-114"> * for most or all 
users.</span>
+<span class="source-line-no">115</span><span id="line-115"> * &lt;/p&gt;</span>
+<span class="source-line-no">116</span><span id="line-116"> *</span>
+<span class="source-line-no">117</span><span id="line-117"> * @since 1.1</span>
+<span class="source-line-no">118</span><span id="line-118"> * @deprecated No 
longer used, will be removed in 2.0.</span>
+<span class="source-line-no">119</span><span id="line-119"> */</span>
+<span class="source-line-no">120</span><span id="line-120">@Deprecated</span>
+<span class="source-line-no">121</span><span id="line-121">public final class 
WeakHashtable extends Hashtable {</span>
+<span class="source-line-no">122</span><span id="line-122"></span>
+<span class="source-line-no">123</span><span id="line-123">    /** Entry 
implementation */</span>
+<span class="source-line-no">124</span><span id="line-124">    private final 
static class Entry implements Map.Entry {</span>
+<span class="source-line-no">125</span><span id="line-125"></span>
+<span class="source-line-no">126</span><span id="line-126">        private 
final Object key;</span>
+<span class="source-line-no">127</span><span id="line-127">        private 
final Object value;</span>
+<span class="source-line-no">128</span><span id="line-128"></span>
+<span class="source-line-no">129</span><span id="line-129">        private 
Entry(final Object key, final Object value) {</span>
+<span class="source-line-no">130</span><span id="line-130">            
this.key = key;</span>
+<span class="source-line-no">131</span><span id="line-131">            
this.value = value;</span>
+<span class="source-line-no">132</span><span id="line-132">        }</span>
+<span class="source-line-no">133</span><span id="line-133"></span>
+<span class="source-line-no">134</span><span id="line-134">        
@Override</span>
+<span class="source-line-no">135</span><span id="line-135">        public 
boolean equals(final Object o) {</span>
+<span class="source-line-no">136</span><span id="line-136">            boolean 
result = false;</span>
+<span class="source-line-no">137</span><span id="line-137">            if (o 
instanceof Map.Entry) {</span>
+<span class="source-line-no">138</span><span id="line-138">                
final Map.Entry entry = (Map.Entry) o;</span>
+<span class="source-line-no">139</span><span id="line-139">                
result =    (getKey()==null ?</span>
+<span class="source-line-no">140</span><span id="line-140">                    
                        entry.getKey() == null :</span>
+<span class="source-line-no">141</span><span id="line-141">                    
                        getKey().equals(entry.getKey())) &amp;&amp;</span>
+<span class="source-line-no">142</span><span id="line-142">                    
        (getValue()==null ?</span>
+<span class="source-line-no">143</span><span id="line-143">                    
                        entry.getValue() == null :</span>
+<span class="source-line-no">144</span><span id="line-144">                    
                        getValue().equals(entry.getValue()));</span>
+<span class="source-line-no">145</span><span id="line-145">            }</span>
+<span class="source-line-no">146</span><span id="line-146">            return 
result;</span>
+<span class="source-line-no">147</span><span id="line-147">        }</span>
+<span class="source-line-no">148</span><span id="line-148"></span>
+<span class="source-line-no">149</span><span id="line-149">        
@Override</span>
+<span class="source-line-no">150</span><span id="line-150">        public 
Object getKey() {</span>
+<span class="source-line-no">151</span><span id="line-151">            return 
key;</span>
+<span class="source-line-no">152</span><span id="line-152">        }</span>
+<span class="source-line-no">153</span><span id="line-153"></span>
+<span class="source-line-no">154</span><span id="line-154">        
@Override</span>
+<span class="source-line-no">155</span><span id="line-155">        public 
Object getValue() {</span>
+<span class="source-line-no">156</span><span id="line-156">            return 
value;</span>
+<span class="source-line-no">157</span><span id="line-157">        }</span>
+<span class="source-line-no">158</span><span id="line-158"></span>
+<span class="source-line-no">159</span><span id="line-159">        
@Override</span>
+<span class="source-line-no">160</span><span id="line-160">        public int 
hashCode() {</span>
+<span class="source-line-no">161</span><span id="line-161">            return 
(getKey()==null ? 0 : getKey().hashCode()) ^</span>
+<span class="source-line-no">162</span><span id="line-162">                
(getValue()==null ? 0 : getValue().hashCode());</span>
+<span class="source-line-no">163</span><span id="line-163">        }</span>
 <span class="source-line-no">164</span><span id="line-164"></span>
-<span class="source-line-no">165</span><span id="line-165">        private 
final WeakReference reference;</span>
-<span class="source-line-no">166</span><span id="line-166">        private 
final int           hashCode;</span>
-<span class="source-line-no">167</span><span id="line-167"></span>
-<span class="source-line-no">168</span><span id="line-168">        /**</span>
-<span class="source-line-no">169</span><span id="line-169">         *</span>
-<span class="source-line-no">170</span><span id="line-170">         * @throws 
NullPointerException if referant is {@code null}</span>
-<span class="source-line-no">171</span><span id="line-171">         */</span>
-<span class="source-line-no">172</span><span id="line-172">        private 
Referenced(final Object referant) {</span>
-<span class="source-line-no">173</span><span id="line-173">            
reference = new WeakReference(referant);</span>
-<span class="source-line-no">174</span><span id="line-174">            // Calc 
a permanent hashCode so calls to Hashtable.remove()</span>
-<span class="source-line-no">175</span><span id="line-175">            // work 
if the WeakReference has been cleared</span>
-<span class="source-line-no">176</span><span id="line-176">            
hashCode  = referant.hashCode();</span>
-<span class="source-line-no">177</span><span id="line-177">        }</span>
-<span class="source-line-no">178</span><span id="line-178"></span>
-<span class="source-line-no">179</span><span id="line-179">        /**</span>
-<span class="source-line-no">180</span><span id="line-180">         *</span>
-<span class="source-line-no">181</span><span id="line-181">         * @throws 
NullPointerException if key is {@code null}</span>
-<span class="source-line-no">182</span><span id="line-182">         */</span>
-<span class="source-line-no">183</span><span id="line-183">        private 
Referenced(final Object key, final ReferenceQueue queue) {</span>
-<span class="source-line-no">184</span><span id="line-184">            
reference = new WeakKey(key, queue, this);</span>
-<span class="source-line-no">185</span><span id="line-185">            // Calc 
a permanent hashCode so calls to Hashtable.remove()</span>
-<span class="source-line-no">186</span><span id="line-186">            // work 
if the WeakReference has been cleared</span>
-<span class="source-line-no">187</span><span id="line-187">            
hashCode  = key.hashCode();</span>
-<span class="source-line-no">188</span><span id="line-188"></span>
-<span class="source-line-no">189</span><span id="line-189">        }</span>
-<span class="source-line-no">190</span><span id="line-190"></span>
-<span class="source-line-no">191</span><span id="line-191">        
@Override</span>
-<span class="source-line-no">192</span><span id="line-192">        public 
boolean equals(final Object o) {</span>
-<span class="source-line-no">193</span><span id="line-193">            boolean 
result = false;</span>
-<span class="source-line-no">194</span><span id="line-194">            if (o 
instanceof Referenced) {</span>
-<span class="source-line-no">195</span><span id="line-195">                
final Referenced otherKey = (Referenced) o;</span>
-<span class="source-line-no">196</span><span id="line-196">                
final Object thisKeyValue = getValue();</span>
-<span class="source-line-no">197</span><span id="line-197">                
final Object otherKeyValue = otherKey.getValue();</span>
-<span class="source-line-no">198</span><span id="line-198">                if 
(thisKeyValue == null) {</span>
-<span class="source-line-no">199</span><span id="line-199">                    
result = otherKeyValue == null;</span>
-<span class="source-line-no">200</span><span id="line-200"></span>
-<span class="source-line-no">201</span><span id="line-201">                    
// Since our hash code was calculated from the original</span>
-<span class="source-line-no">202</span><span id="line-202">                    
// non-null referant, the above check breaks the</span>
-<span class="source-line-no">203</span><span id="line-203">                    
// hash code/equals contract, as two cleared Referenced</span>
-<span class="source-line-no">204</span><span id="line-204">                    
// objects could test equal but have different hash codes.</span>
-<span class="source-line-no">205</span><span id="line-205">                    
// We can reduce (not eliminate) the chance of this</span>
-<span class="source-line-no">206</span><span id="line-206">                    
// happening by comparing hash codes.</span>
-<span class="source-line-no">207</span><span id="line-207">                    
result = result &amp;&amp; this.hashCode() == otherKey.hashCode();</span>
-<span class="source-line-no">208</span><span id="line-208">                    
// In any case, as our c'tor does not allow null referants</span>
-<span class="source-line-no">209</span><span id="line-209">                    
// and Hashtable does not do equality checks between</span>
-<span class="source-line-no">210</span><span id="line-210">                    
// existing keys, normal hashtable operations should never</span>
-<span class="source-line-no">211</span><span id="line-211">                    
// result in an equals comparison between null referants</span>
-<span class="source-line-no">212</span><span id="line-212">                
}</span>
-<span class="source-line-no">213</span><span id="line-213">                
else</span>
-<span class="source-line-no">214</span><span id="line-214">                
{</span>
-<span class="source-line-no">215</span><span id="line-215">                    
result = thisKeyValue.equals(otherKeyValue);</span>
-<span class="source-line-no">216</span><span id="line-216">                
}</span>
-<span class="source-line-no">217</span><span id="line-217">            }</span>
-<span class="source-line-no">218</span><span id="line-218">            return 
result;</span>
-<span class="source-line-no">219</span><span id="line-219">        }</span>
-<span class="source-line-no">220</span><span id="line-220"></span>
-<span class="source-line-no">221</span><span id="line-221">        private 
Object getValue() {</span>
-<span class="source-line-no">222</span><span id="line-222">            return 
reference.get();</span>
-<span class="source-line-no">223</span><span id="line-223">        }</span>
-<span class="source-line-no">224</span><span id="line-224"></span>
-<span class="source-line-no">225</span><span id="line-225">        
@Override</span>
-<span class="source-line-no">226</span><span id="line-226">        public int 
hashCode() {</span>
-<span class="source-line-no">227</span><span id="line-227">            return 
hashCode;</span>
+<span class="source-line-no">165</span><span id="line-165">        
@Override</span>
+<span class="source-line-no">166</span><span id="line-166">        public 
Object setValue(final Object value) {</span>
+<span class="source-line-no">167</span><span id="line-167">            throw 
new UnsupportedOperationException("Entry.setValue is not supported.");</span>
+<span class="source-line-no">168</span><span id="line-168">        }</span>
+<span class="source-line-no">169</span><span id="line-169">    }</span>
+<span class="source-line-no">170</span><span id="line-170"></span>
+<span class="source-line-no">171</span><span id="line-171">    /** Wrapper 
giving correct symantics for equals and hash code */</span>
+<span class="source-line-no">172</span><span id="line-172">    private final 
static class Referenced {</span>
+<span class="source-line-no">173</span><span id="line-173"></span>
+<span class="source-line-no">174</span><span id="line-174">        private 
final WeakReference reference;</span>
+<span class="source-line-no">175</span><span id="line-175">        private 
final int           hashCode;</span>
+<span class="source-line-no">176</span><span id="line-176"></span>
+<span class="source-line-no">177</span><span id="line-177">        /**</span>
+<span class="source-line-no">178</span><span id="line-178">         *</span>
+<span class="source-line-no">179</span><span id="line-179">         * @throws 
NullPointerException if referant is {@code null}</span>
+<span class="source-line-no">180</span><span id="line-180">         */</span>
+<span class="source-line-no">181</span><span id="line-181">        private 
Referenced(final Object referant) {</span>
+<span class="source-line-no">182</span><span id="line-182">            
reference = new WeakReference(referant);</span>
+<span class="source-line-no">183</span><span id="line-183">            // Calc 
a permanent hashCode so calls to Hashtable.remove()</span>
+<span class="source-line-no">184</span><span id="line-184">            // work 
if the WeakReference has been cleared</span>
+<span class="source-line-no">185</span><span id="line-185">            
hashCode  = referant.hashCode();</span>
+<span class="source-line-no">186</span><span id="line-186">        }</span>
+<span class="source-line-no">187</span><span id="line-187"></span>
+<span class="source-line-no">188</span><span id="line-188">        /**</span>
+<span class="source-line-no">189</span><span id="line-189">         *</span>
+<span class="source-line-no">190</span><span id="line-190">         * @throws 
NullPointerException if key is {@code null}</span>
+<span class="source-line-no">191</span><span id="line-191">         */</span>
+<span class="source-line-no">192</span><span id="line-192">        private 
Referenced(final Object key, final ReferenceQueue queue) {</span>
+<span class="source-line-no">193</span><span id="line-193">            
reference = new WeakKey(key, queue, this);</span>
+<span class="source-line-no">194</span><span id="line-194">            // Calc 
a permanent hashCode so calls to Hashtable.remove()</span>
+<span class="source-line-no">195</span><span id="line-195">            // work 
if the WeakReference has been cleared</span>
+<span class="source-line-no">196</span><span id="line-196">            
hashCode  = key.hashCode();</span>
+<span class="source-line-no">197</span><span id="line-197"></span>
+<span class="source-line-no">198</span><span id="line-198">        }</span>
+<span class="source-line-no">199</span><span id="line-199"></span>
+<span class="source-line-no">200</span><span id="line-200">        
@Override</span>
+<span class="source-line-no">201</span><span id="line-201">        public 
boolean equals(final Object o) {</span>
+<span class="source-line-no">202</span><span id="line-202">            boolean 
result = false;</span>
+<span class="source-line-no">203</span><span id="line-203">            if (o 
instanceof Referenced) {</span>
+<span class="source-line-no">204</span><span id="line-204">                
final Referenced otherKey = (Referenced) o;</span>
+<span class="source-line-no">205</span><span id="line-205">                
final Object thisKeyValue = getValue();</span>
+<span class="source-line-no">206</span><span id="line-206">                
final Object otherKeyValue = otherKey.getValue();</span>
+<span class="source-line-no">207</span><span id="line-207">                if 
(thisKeyValue == null) {</span>
+<span class="source-line-no">208</span><span id="line-208">                    
result = otherKeyValue == null;</span>
+<span class="source-line-no">209</span><span id="line-209"></span>
+<span class="source-line-no">210</span><span id="line-210">                    
// Since our hash code was calculated from the original</span>
+<span class="source-line-no">211</span><span id="line-211">                    
// non-null referant, the above check breaks the</span>
+<span class="source-line-no">212</span><span id="line-212">                    
// hash code/equals contract, as two cleared Referenced</span>
+<span class="source-line-no">213</span><span id="line-213">                    
// objects could test equal but have different hash codes.</span>
+<span class="source-line-no">214</span><span id="line-214">                    
// We can reduce (not eliminate) the chance of this</span>
+<span class="source-line-no">215</span><span id="line-215">                    
// happening by comparing hash codes.</span>
+<span class="source-line-no">216</span><span id="line-216">                    
result = result &amp;&amp; hashCode() == otherKey.hashCode();</span>
+<span class="source-line-no">217</span><span id="line-217">                    
// In any case, as our c'tor does not allow null referants</span>
+<span class="source-line-no">218</span><span id="line-218">                    
// and Hashtable does not do equality checks between</span>
+<span class="source-line-no">219</span><span id="line-219">                    
// existing keys, normal hashtable operations should never</span>
+<span class="source-line-no">220</span><span id="line-220">                    
// result in an equals comparison between null referants</span>
+<span class="source-line-no">221</span><span id="line-221">                
}</span>
+<span class="source-line-no">222</span><span id="line-222">                
else</span>
+<span class="source-line-no">223</span><span id="line-223">                
{</span>
+<span class="source-line-no">224</span><span id="line-224">                    
result = thisKeyValue.equals(otherKeyValue);</span>
+<span class="source-line-no">225</span><span id="line-225">                
}</span>
+<span class="source-line-no">226</span><span id="line-226">            }</span>
+<span class="source-line-no">227</span><span id="line-227">            return 
result;</span>
 <span class="source-line-no">228</span><span id="line-228">        }</span>
-<span class="source-line-no">229</span><span id="line-229">    }</span>
-<span class="source-line-no">230</span><span id="line-230"></span>
-<span class="source-line-no">231</span><span id="line-231">    /**</span>
-<span class="source-line-no">232</span><span id="line-232">     * 
WeakReference subclass that holds a hard reference to an</span>
-<span class="source-line-no">233</span><span id="line-233">     * associated 
{@code value} and also makes accessible</span>
-<span class="source-line-no">234</span><span id="line-234">     * the 
Referenced object holding it.</span>
-<span class="source-line-no">235</span><span id="line-235">     */</span>
-<span class="source-line-no">236</span><span id="line-236">    private final 
static class WeakKey extends WeakReference {</span>
-<span class="source-line-no">237</span><span id="line-237"></span>
-<span class="source-line-no">238</span><span id="line-238">        private 
final Referenced referenced;</span>
+<span class="source-line-no">229</span><span id="line-229"></span>
+<span class="source-line-no">230</span><span id="line-230">        private 
Object getValue() {</span>
+<span class="source-line-no">231</span><span id="line-231">            return 
reference.get();</span>
+<span class="source-line-no">232</span><span id="line-232">        }</span>
+<span class="source-line-no">233</span><span id="line-233"></span>
+<span class="source-line-no">234</span><span id="line-234">        
@Override</span>
+<span class="source-line-no">235</span><span id="line-235">        public int 
hashCode() {</span>
+<span class="source-line-no">236</span><span id="line-236">            return 
hashCode;</span>
+<span class="source-line-no">237</span><span id="line-237">        }</span>
+<span class="source-line-no">238</span><span id="line-238">    }</span>
 <span class="source-line-no">239</span><span id="line-239"></span>
-<span class="source-line-no">240</span><span id="line-240">        private 
WeakKey(final Object key,</span>
-<span class="source-line-no">241</span><span id="line-241">                    
    final ReferenceQueue queue,</span>
-<span class="source-line-no">242</span><span id="line-242">                    
    final Referenced referenced) {</span>
-<span class="source-line-no">243</span><span id="line-243">            
super(key, queue);</span>
-<span class="source-line-no">244</span><span id="line-244">            
this.referenced = referenced;</span>
-<span class="source-line-no">245</span><span id="line-245">        }</span>
+<span class="source-line-no">240</span><span id="line-240">    /**</span>
+<span class="source-line-no">241</span><span id="line-241">     * 
WeakReference subclass that holds a hard reference to an</span>
+<span class="source-line-no">242</span><span id="line-242">     * associated 
{@code value} and also makes accessible</span>
+<span class="source-line-no">243</span><span id="line-243">     * the 
Referenced object holding it.</span>
+<span class="source-line-no">244</span><span id="line-244">     */</span>
+<span class="source-line-no">245</span><span id="line-245">    private final 
static class WeakKey extends WeakReference {</span>
 <span class="source-line-no">246</span><span id="line-246"></span>
-<span class="source-line-no">247</span><span id="line-247">        private 
Referenced getReferenced() {</span>
-<span class="source-line-no">248</span><span id="line-248">            return 
referenced;</span>
-<span class="source-line-no">249</span><span id="line-249">        }</span>
-<span class="source-line-no">250</span><span id="line-250">     }</span>
-<span class="source-line-no">251</span><span id="line-251"></span>
-<span class="source-line-no">252</span><span id="line-252">    /** 
Serializable version identifier. */</span>
-<span class="source-line-no">253</span><span id="line-253">    private static 
final long serialVersionUID = -1546036869799732453L;</span>
-<span class="source-line-no">254</span><span id="line-254"></span>
-<span class="source-line-no">255</span><span id="line-255">    /**</span>
-<span class="source-line-no">256</span><span id="line-256">     * The maximum 
number of times put() or remove() can be called before</span>
-<span class="source-line-no">257</span><span id="line-257">     * the map will 
be purged of all cleared entries.</span>
-<span class="source-line-no">258</span><span id="line-258">     */</span>
-<span class="source-line-no">259</span><span id="line-259">    private static 
final int MAX_CHANGES_BEFORE_PURGE = 100;</span>
+<span class="source-line-no">247</span><span id="line-247">        private 
final Referenced referenced;</span>
+<span class="source-line-no">248</span><span id="line-248"></span>
+<span class="source-line-no">249</span><span id="line-249">        private 
WeakKey(final Object key,</span>
+<span class="source-line-no">250</span><span id="line-250">                    
    final ReferenceQueue queue,</span>
+<span class="source-line-no">251</span><span id="line-251">                    
    final Referenced referenced) {</span>
+<span class="source-line-no">252</span><span id="line-252">            
super(key, queue);</span>
+<span class="source-line-no">253</span><span id="line-253">            
this.referenced = referenced;</span>
+<span class="source-line-no">254</span><span id="line-254">        }</span>
+<span class="source-line-no">255</span><span id="line-255"></span>
+<span class="source-line-no">256</span><span id="line-256">        private 
Referenced getReferenced() {</span>
+<span class="source-line-no">257</span><span id="line-257">            return 
referenced;</span>
+<span class="source-line-no">258</span><span id="line-258">        }</span>
+<span class="source-line-no">259</span><span id="line-259">     }</span>
 <span class="source-line-no">260</span><span id="line-260"></span>
-<span class="source-line-no">261</span><span id="line-261">    /**</span>
-<span class="source-line-no">262</span><span id="line-262">     * The maximum 
number of times put() or remove() can be called before</span>
-<span class="source-line-no">263</span><span id="line-263">     * the map will 
be purged of one cleared entry.</span>
-<span class="source-line-no">264</span><span id="line-264">     */</span>
-<span class="source-line-no">265</span><span id="line-265">    private static 
final int PARTIAL_PURGE_COUNT     = 10;</span>
-<span class="source-line-no">266</span><span id="line-266"></span>
-<span class="source-line-no">267</span><span id="line-267">    /** 
ReferenceQueue we check for GC'd keys. */</span>
-<span class="source-line-no">268</span><span id="line-268">    private final 
transient ReferenceQueue queue = new ReferenceQueue();</span>
+<span class="source-line-no">261</span><span id="line-261">    /** 
Serializable version identifier. */</span>
+<span class="source-line-no">262</span><span id="line-262">    private static 
final long serialVersionUID = -1546036869799732453L;</span>
+<span class="source-line-no">263</span><span id="line-263"></span>
+<span class="source-line-no">264</span><span id="line-264">    /**</span>
+<span class="source-line-no">265</span><span id="line-265">     * The maximum 
number of times put() or remove() can be called before</span>
+<span class="source-line-no">266</span><span id="line-266">     * the map will 
be purged of all cleared entries.</span>
+<span class="source-line-no">267</span><span id="line-267">     */</span>
+<span class="source-line-no">268</span><span id="line-268">    private static 
final int MAX_CHANGES_BEFORE_PURGE = 100;</span>
 <span class="source-line-no">269</span><span id="line-269"></span>
-<span class="source-line-no">270</span><span id="line-270">    /** Counter 
used to control how often we purge gc'd entries. */</span>
-<span class="source-line-no">271</span><span id="line-271">    private int 
changeCount;</span>
-<span class="source-line-no">272</span><span id="line-272"></span>
-<span class="source-line-no">273</span><span id="line-273">    /**</span>
-<span class="source-line-no">274</span><span id="line-274">     * Constructs a 
WeakHashtable with the Hashtable default</span>
-<span class="source-line-no">275</span><span id="line-275">     * capacity and 
load factor.</span>
-<span class="source-line-no">276</span><span id="line-276">     */</span>
-<span class="source-line-no">277</span><span id="line-277">    public 
WeakHashtable() {}</span>
+<span class="source-line-no">270</span><span id="line-270">    /**</span>
+<span class="source-line-no">271</span><span id="line-271">     * The maximum 
number of times put() or remove() can be called before</span>
+<span class="source-line-no">272</span><span id="line-272">     * the map will 
be purged of one cleared entry.</span>
+<span class="source-line-no">273</span><span id="line-273">     */</span>
+<span class="source-line-no">274</span><span id="line-274">    private static 
final int PARTIAL_PURGE_COUNT     = 10;</span>
+<span class="source-line-no">275</span><span id="line-275"></span>
+<span class="source-line-no">276</span><span id="line-276">    /** 
ReferenceQueue we check for GC'd keys. */</span>
+<span class="source-line-no">277</span><span id="line-277">    private final 
transient ReferenceQueue queue = new ReferenceQueue();</span>
 <span class="source-line-no">278</span><span id="line-278"></span>
-<span class="source-line-no">279</span><span id="line-279">    /**</span>
-<span class="source-line-no">280</span><span id="line-280">     *@see 
Hashtable</span>
-<span class="source-line-no">281</span><span id="line-281">     */</span>
-<span class="source-line-no">282</span><span id="line-282">    @Override</span>
-<span class="source-line-no">283</span><span id="line-283">    public boolean 
containsKey(final Object key) {</span>
-<span class="source-line-no">284</span><span id="line-284">        // purge 
should not be required</span>
-<span class="source-line-no">285</span><span id="line-285">        final 
Referenced referenced = new Referenced(key);</span>
-<span class="source-line-no">286</span><span id="line-286">        return 
super.containsKey(referenced);</span>
-<span class="source-line-no">287</span><span id="line-287">    }</span>
-<span class="source-line-no">288</span><span id="line-288"></span>
-<span class="source-line-no">289</span><span id="line-289">    /**</span>
-<span class="source-line-no">290</span><span id="line-290">     *@see 
Hashtable</span>
-<span class="source-line-no">291</span><span id="line-291">     */</span>
-<span class="source-line-no">292</span><span id="line-292">    @Override</span>
-<span class="source-line-no">293</span><span id="line-293">    public 
Enumeration elements() {</span>
-<span class="source-line-no">294</span><span id="line-294">        
purge();</span>
-<span class="source-line-no">295</span><span id="line-295">        return 
super.elements();</span>
+<span class="source-line-no">279</span><span id="line-279">    /** Counter 
used to control how often we purge gc'd entries. */</span>
+<span class="source-line-no">280</span><span id="line-280">    private int 
changeCount;</span>
+<span class="source-line-no">281</span><span id="line-281"></span>
+<span class="source-line-no">282</span><span id="line-282">    /**</span>
+<span class="source-line-no">283</span><span id="line-283">     * Constructs a 
WeakHashtable with the Hashtable default</span>
+<span class="source-line-no">284</span><span id="line-284">     * capacity and 
load factor.</span>
+<span class="source-line-no">285</span><span id="line-285">     */</span>
+<span class="source-line-no">286</span><span id="line-286">    public 
WeakHashtable() {}</span>
+<span class="source-line-no">287</span><span id="line-287"></span>
+<span class="source-line-no">288</span><span id="line-288">    /**</span>
+<span class="source-line-no">289</span><span id="line-289">     *@see 
Hashtable</span>
+<span class="source-line-no">290</span><span id="line-290">     */</span>
+<span class="source-line-no">291</span><span id="line-291">    @Override</span>
+<span class="source-line-no">292</span><span id="line-292">    public boolean 
containsKey(final Object key) {</span>
+<span class="source-line-no">293</span><span id="line-293">        // purge 
should not be required</span>
+<span class="source-line-no">294</span><span id="line-294">        final 
Referenced referenced = new Referenced(key);</span>
+<span class="source-line-no">295</span><span id="line-295">        return 
super.containsKey(referenced);</span>
 <span class="source-line-no">296</span><span id="line-296">    }</span>
 <span class="source-line-no">297</span><span id="line-297"></span>
 <span class="source-line-no">298</span><span id="line-298">    /**</span>
 <span class="source-line-no">299</span><span id="line-299">     *@see 
Hashtable</span>
 <span class="source-line-no">300</span><span id="line-300">     */</span>
 <span class="source-line-no">301</span><span id="line-301">    @Override</span>
-<span class="source-line-no">302</span><span id="line-302">    public Set 
entrySet() {</span>
+<span class="source-line-no">302</span><span id="line-302">    public 
Enumeration elements() {</span>
 <span class="source-line-no">303</span><span id="line-303">        
purge();</span>
-<span class="source-line-no">304</span><span id="line-304">        final Set 
referencedEntries = super.entrySet();</span>
-<span class="source-line-no">305</span><span id="line-305">        final Set 
unreferencedEntries = new HashSet();</span>
-<span class="source-line-no">306</span><span id="line-306">        for (final 
Object referencedEntry : referencedEntries) {</span>
-<span class="source-line-no">307</span><span id="line-307">            final 
Map.Entry entry = (Map.Entry) referencedEntry;</span>
-<span class="source-line-no">308</span><span id="line-308">            final 
Referenced referencedKey = (Referenced) entry.getKey();</span>
-<span class="source-line-no">309</span><span id="line-309">            final 
Object key = referencedKey.getValue();</span>
-<span class="source-line-no">310</span><span id="line-310">            final 
Object value = entry.getValue();</span>
-<span class="source-line-no">311</span><span id="line-311">            if (key 
!= null) {</span>
-<span class="source-line-no">312</span><span id="line-312">                
final Entry dereferencedEntry = new Entry(key, value);</span>
-<span class="source-line-no">313</span><span id="line-313">                
unreferencedEntries.add(dereferencedEntry);</span>
-<span class="source-line-no">314</span><span id="line-314">            }</span>
-<span class="source-line-no">315</span><span id="line-315">        }</span>
-<span class="source-line-no">316</span><span id="line-316">        return 
unreferencedEntries;</span>
-<span class="source-line-no">317</span><span id="line-317">    }</span>
-<span class="source-line-no">318</span><span id="line-318"></span>
-<span class="source-line-no">319</span><span id="line-319">    /**</span>
-<span class="source-line-no">320</span><span id="line-320">     *@see 
Hashtable</span>
-<span class="source-line-no">321</span><span id="line-321">     */</span>
-<span class="source-line-no">322</span><span id="line-322">    @Override</span>
-<span class="source-line-no">323</span><span id="line-323">    public Object 
get(final Object key) {</span>
-<span class="source-line-no">324</span><span id="line-324">        // for 
performance reasons, no purge</span>
-<span class="source-line-no">325</span><span id="line-325">        final 
Referenced referenceKey = new Referenced(key);</span>
-<span class="source-line-no">326</span><span id="line-326">        return 
super.get(referenceKey);</span>
-<span class="source-line-no">327</span><span id="line-327">    }</span>
-<span class="source-line-no">328</span><span id="line-328"></span>
-<span class="source-line-no">329</span><span id="line-329">    /**</span>
-<span class="source-line-no">330</span><span id="line-330">     *@see 
Hashtable</span>
-<span class="source-line-no">331</span><span id="line-331">     */</span>
-<span class="source-line-no">332</span><span id="line-332">    @Override</span>
-<span class="source-line-no">333</span><span id="line-333">    public boolean 
isEmpty() {</span>
-<span class="source-line-no">334</span><span id="line-334">        
purge();</span>
-<span class="source-line-no">335</span><span id="line-335">        return 
super.isEmpty();</span>
+<span class="source-line-no">304</span><span id="line-304">        return 
super.elements();</span>
+<span class="source-line-no">305</span><span id="line-305">    }</span>
+<span class="source-line-no">306</span><span id="line-306"></span>
+<span class="source-line-no">307</span><span id="line-307">    /**</span>
+<span class="source-line-no">308</span><span id="line-308">     *@see 
Hashtable</span>
+<span class="source-line-no">309</span><span id="line-309">     */</span>
+<span class="source-line-no">310</span><span id="line-310">    @Override</span>
+<span class="source-line-no">311</span><span id="line-311">    public Set 
entrySet() {</span>
+<span class="source-line-no">312</span><span id="line-312">        
purge();</span>
+<span class="source-line-no">313</span><span id="line-313">        final Set 
referencedEntries = super.entrySet();</span>
+<span class="source-line-no">314</span><span id="line-314">        final Set 
unreferencedEntries = new HashSet();</span>
+<span class="source-line-no">315</span><span id="line-315">        for (final 
Object referencedEntry : referencedEntries) {</span>
+<span class="source-line-no">316</span><span id="line-316">            final 
Map.Entry entry = (Map.Entry) referencedEntry;</span>
+<span class="source-line-no">317</span><span id="line-317">            final 
Referenced referencedKey = (Referenced) entry.getKey();</span>
+<span class="source-line-no">318</span><span id="line-318">            final 
Object key = referencedKey.getValue();</span>
+<span class="source-line-no">319</span><span id="line-319">            final 
Object value = entry.getValue();</span>
+<span class="source-line-no">320</span><span id="line-320">            if (key 
!= null) {</span>
+<span class="source-line-no">321</span><span id="line-321">                
final Entry dereferencedEntry = new Entry(key, value);</span>
+<span class="source-line-no">322</span><span id="line-322">                
unreferencedEntries.add(dereferencedEntry);</span>
+<span class="source-line-no">323</span><span id="line-323">            }</span>
+<span class="source-line-no">324</span><span id="line-324">        }</span>
+<span class="source-line-no">325</span><span id="line-325">        return 
unreferencedEntries;</span>
+<span class="source-line-no">326</span><span id="line-326">    }</span>
+<span class="source-line-no">327</span><span id="line-327"></span>
+<span class="source-line-no">328</span><span id="line-328">    /**</span>
+<span class="source-line-no">329</span><span id="line-329">     *@see 
Hashtable</span>
+<span class="source-line-no">330</span><span id="line-330">     */</span>
+<span class="source-line-no">331</span><span id="line-331">    @Override</span>
+<span class="source-line-no">332</span><span id="line-332">    public Object 
get(final Object key) {</span>
+<span class="source-line-no">333</span><span id="line-333">        // for 
performance reasons, no purge</span>
+<span class="source-line-no">334</span><span id="line-334">        final 
Referenced referenceKey = new Referenced(key);</span>
+<span class="source-line-no">335</span><span id="line-335">        return 
super.get(referenceKey);</span>
 <span class="source-line-no">336</span><span id="line-336">    }</span>
 <span class="source-line-no">337</span><span id="line-337"></span>
 <span class="source-line-no">338</span><span id="line-338">    /**</span>
 <span class="source-line-no">339</span><span id="line-339">     *@see 
Hashtable</span>
 <span class="source-line-no">340</span><span id="line-340">     */</span>
 <span class="source-line-no">341</span><span id="line-341">    @Override</span>
-<span class="source-line-no">342</span><span id="line-342">    public 
Enumeration keys() {</span>
+<span class="source-line-no">342</span><span id="line-342">    public boolean 
isEmpty() {</span>
 <span class="source-line-no">343</span><span id="line-343">        
purge();</span>
-<span class="source-line-no">344</span><span id="line-344">        final 
Enumeration enumer = super.keys();</span>
-<span class="source-line-no">345</span><span id="line-345">        return new 
Enumeration() {</span>
-<span class="source-line-no">346</span><span id="line-346">            
@Override</span>
-<span class="source-line-no">347</span><span id="line-347">            public 
boolean hasMoreElements() {</span>
-<span class="source-line-no">348</span><span id="line-348">                
return enumer.hasMoreElements();</span>
-<span class="source-line-no">349</span><span id="line-349">            }</span>
-<span class="source-line-no">350</span><span id="line-350">            
@Override</span>
-<span class="source-line-no">351</span><span id="line-351">            public 
Object nextElement() {</span>
-<span class="source-line-no">352</span><span id="line-352">                 
final Referenced nextReference = (Referenced) enumer.nextElement();</span>
-<span class="source-line-no">353</span><span id="line-353">                 
return nextReference.getValue();</span>
-<span class="source-line-no">354</span><span id="line-354">            }</span>
-<span class="source-line-no">355</span><span id="line-355">        };</span>
-<span class="source-line-no">356</span><span id="line-356">    }</span>
-<span class="source-line-no">357</span><span id="line-357"></span>
-<span class="source-line-no">358</span><span id="line-358">    /**</span>
-<span class="source-line-no">359</span><span id="line-359">     *@see 
Hashtable</span>
-<span class="source-line-no">360</span><span id="line-360">     */</span>
-<span class="source-line-no">361</span><span id="line-361">    @Override</span>
-<span class="source-line-no">362</span><span id="line-362">    public Set 
keySet() {</span>
-<span class="source-line-no">363</span><span id="line-363">        
purge();</span>
-<span class="source-line-no">364</span><span id="line-364">        final Set 
referencedKeys = super.keySet();</span>
-<span class="source-line-no">365</span><span id="line-365">        final Set 
unreferencedKeys = new HashSet();</span>
-<span class="source-line-no">366</span><span id="line-366">        for (final 
Object referencedKey : referencedKeys) {</span>
-<span class="source-line-no">367</span><span id="line-367">            final 
Referenced referenceKey = (Referenced) referencedKey;</span>
-<span class="source-line-no">368</span><span id="line-368">            final 
Object keyValue = referenceKey.getValue();</span>
-<span class="source-line-no">369</span><span id="line-369">            if 
(keyValue != null) {</span>
-<span class="source-line-no">370</span><span id="line-370">                
unreferencedKeys.add(keyValue);</span>
-<span class="source-line-no">371</span><span id="line-371">            }</span>
-<span class="source-line-no">372</span><span id="line-372">        }</span>
-<span class="source-line-no">373</span><span id="line-373">        return 
unreferencedKeys;</span>
-<span class="source-line-no">374</span><span id="line-374">    }</span>
-<span class="source-line-no">375</span><span id="line-375"></span>
-<span class="source-line-no">376</span><span id="line-376">    /**</span>
-<span class="source-line-no">377</span><span id="line-377">     * Purges all 
entries whose wrapped keys</span>
-<span class="source-line-no">378</span><span id="line-378">     * have been 
garbage collected.</span>
-<span class="source-line-no">379</span><span id="line-379">     */</span>
-<span class="source-line-no">380</span><span id="line-380">    private void 
purge() {</span>
-<span class="source-line-no">381</span><span id="line-381">        final List 
toRemove = new ArrayList();</span>
-<span class="source-line-no">382</span><span id="line-382">        
synchronized (queue) {</span>
-<span class="source-line-no">383</span><span id="line-383">            WeakKey 
key;</span>
-<span class="source-line-no">384</span><span id="line-384">            while 
((key = (WeakKey) queue.poll()) != null) {</span>
-<span class="source-line-no">385</span><span id="line-385">                
toRemove.add(key.getReferenced());</span>
-<span class="source-line-no">386</span><span id="line-386">            }</span>
-<span class="source-line-no">387</span><span id="line-387">        }</span>
-<span class="source-line-no">388</span><span id="line-388"></span>
-<span class="source-line-no">389</span><span id="line-389">        // 
LOGGING-119: do the actual removal of the keys outside the sync block</span>
-<span class="source-line-no">390</span><span id="line-390">        // to 
prevent deadlock scenarios as purge() may be called from</span>
-<span class="source-line-no">391</span><span id="line-391">        // 
non-synchronized methods too</span>
-<span class="source-line-no">392</span><span id="line-392">        final int 
size = toRemove.size();</span>
-<span class="source-line-no">393</span><span id="line-393">        for (int i 
= 0; i &lt; size; i++) {</span>
-<span class="source-line-no">394</span><span id="line-394">            
super.remove(toRemove.get(i));</span>
-<span class="source-line-no">395</span><span id="line-395">        }</span>
-<span class="source-line-no">396</span><span id="line-396">    }</span>
+<span class="source-line-no">344</span><span id="line-344">        return 
super.isEmpty();</span>
+<span class="source-line-no">345</span><span id="line-345">    }</span>
+<span class="source-line-no">346</span><span id="line-346"></span>
+<span class="source-line-no">347</span><span id="line-347">    /**</span>
+<span class="source-line-no">348</span><span id="line-348">     *@see 
Hashtable</span>
+<span class="source-line-no">349</span><span id="line-349">     */</span>
+<span class="source-line-no">350</span><span id="line-350">    @Override</span>
+<span class="source-line-no">351</span><span id="line-351">    public 
Enumeration keys() {</span>
+<span class="source-line-no">352</span><span id="line-352">        
purge();</span>
+<span class="source-line-no">353</span><span id="line-353">        final 
Enumeration enumer = super.keys();</span>
+<span class="source-line-no">354</span><span id="line-354">        return new 
Enumeration() {</span>
+<span class="source-line-no">355</span><span id="line-355">            
@Override</span>
+<span class="source-line-no">356</span><span id="line-356">            public 
boolean hasMoreElements() {</span>
+<span class="source-line-no">357</span><span id="line-357">                
return enumer.hasMoreElements();</span>
+<span class="source-line-no">358</span><span id="line-358">            }</span>
+<span class="source-line-no">359</span><span id="line-359">            
@Override</span>
+<span class="source-line-no">360</span><span id="line-360">            public 
Object nextElement() {</span>
+<span class="source-line-no">361</span><span id="line-361">                 
final Referenced nextReference = (Referenced) enumer.nextElement();</span>
+<span class="source-line-no">362</span><span id="line-362">                 
return nextReference.getValue();</span>
+<span class="source-line-no">363</span><span id="line-363">            }</span>
+<span class="source-line-no">364</span><span id="line-364">        };</span>
+<span class="source-line-no">365</span><span id="line-365">    }</span>
+<span class="source-line-no">366</span><span id="line-366"></span>
+<span class="source-line-no">367</span><span id="line-367">    /**</span>
+<span class="source-line-no">368</span><span id="line-368">     *@see 
Hashtable</span>
+<span class="source-line-no">369</span><span id="line-369">     */</span>
+<span class="source-line-no">370</span><span id="line-370">    @Override</span>
+<span class="source-line-no">371</span><span id="line-371">    public Set 
keySet() {</span>
+<span class="source-line-no">372</span><span id="line-372">        
purge();</span>
+<span class="source-line-no">373</span><span id="line-373">        final Set 
referencedKeys = super.keySet();</span>
+<span class="source-line-no">374</span><span id="line-374">        final Set 
unreferencedKeys = new HashSet();</span>
+<span class="source-line-no">375</span><span id="line-375">        for (final 
Object referencedKey : referencedKeys) {</span>
+<span class="source-line-no">376</span><span id="line-376">            final 
Referenced referenceKey = (Referenced) referencedKey;</span>
+<span class="source-line-no">377</span><span id="line-377">            final 
Object keyValue = referenceKey.getValue();</span>
+<span class="source-line-no">378</span><span id="line-378">            if 
(keyValue != null) {</span>
+<span class="source-line-no">379</span><span id="line-379">                
unreferencedKeys.add(keyValue);</span>
+<span class="source-line-no">380</span><span id="line-380">            }</span>
+<span class="source-line-no">381</span><span id="line-381">        }</span>
+<span class="source-line-no">382</span><span id="line-382">        return 
unreferencedKeys;</span>
+<span class="source-line-no">383</span><span id="line-383">    }</span>
+<span class="source-line-no">384</span><span id="line-384"></span>
+<span class="source-line-no">385</span><span id="line-385">    /**</span>
+<span class="source-line-no">386</span><span id="line-386">     * Purges all 
entries whose wrapped keys</span>
+<span class="source-line-no">387</span><span id="line-387">     * have been 
garbage collected.</span>
+<span class="source-line-no">388</span><span id="line-388">     */</span>
+<span class="source-line-no">389</span><span id="line-389">    private void 
purge() {</span>
+<span class="source-line-no">390</span><span id="line-390">        final List 
toRemove = new ArrayList();</span>
+<span class="source-line-no">391</span><span id="line-391">        
synchronized (queue) {</span>
+<span class="source-line-no">392</span><span id="line-392">            WeakKey 
key;</span>
+<span class="source-line-no">393</span><span id="line-393">            while 
((key = (WeakKey) queue.poll()) != null) {</span>
+<span class="source-line-no">394</span><span id="line-394">                
toRemove.add(key.getReferenced());</span>
+<span class="source-line-no">395</span><span id="line-395">            }</span>
+<span class="source-line-no">396</span><span id="line-396">        }</span>
 <span class="source-line-no">397</span><span id="line-397"></span>
-<span class="source-line-no">398</span><span id="line-398">    /**</span>
-<span class="source-line-no">399</span><span id="line-399">     * Purges one 
entry whose wrapped key</span>
-<span class="source-line-no">400</span><span id="line-400">     * has been 
garbage collected.</span>
-<span class="source-line-no">401</span><span id="line-401">     */</span>
-<span class="source-line-no">402</span><span id="line-402">    private void 
purgeOne() {</span>
-<span class="source-line-no">403</span><span id="line-403">        
synchronized (queue) {</span>
-<span class="source-line-no">404</span><span id="line-404">            final 
WeakKey key = (WeakKey) queue.poll();</span>
-<span class="source-line-no">405</span><span id="line-405">            if (key 
!= null) {</span>
-<span class="source-line-no">406</span><span id="line-406">                
super.remove(key.getReferenced());</span>
-<span class="source-line-no">407</span><span id="line-407">            }</span>
-<span class="source-line-no">408</span><span id="line-408">        }</span>
-<span class="source-line-no">409</span><span id="line-409">    }</span>
-<span class="source-line-no">410</span><span id="line-410"></span>
-<span class="source-line-no">411</span><span id="line-411">    /**</span>
-<span class="source-line-no">412</span><span id="line-412">     *@see 
Hashtable</span>
-<span class="source-line-no">413</span><span id="line-413">     */</span>
-<span class="source-line-no">414</span><span id="line-414">    @Override</span>
-<span class="source-line-no">415</span><span id="line-415">    public 
synchronized Object put(final Object key, final Object value) {</span>
-<span class="source-line-no">416</span><span id="line-416">        // check 
for nulls, ensuring semantics match superclass</span>
-<span class="source-line-no">417</span><span id="line-417">        
Objects.requireNonNull(key, "key");</span>
-<span class="source-line-no">418</span><span id="line-418">        
Objects.requireNonNull(value, "value");</span>
+<span class="source-line-no">398</span><span id="line-398">        // 
LOGGING-119: do the actual removal of the keys outside the sync block</span>
+<span class="source-line-no">399</span><span id="line-399">        // to 
prevent deadlock scenarios as purge() may be called from</span>
+<span class="source-line-no">400</span><span id="line-400">        // 
non-synchronized methods too</span>
+<span class="source-line-no">401</span><span id="line-401">        final int 
size = toRemove.size();</span>
+<span class="source-line-no">402</span><span id="line-402">        for (int i 
= 0; i &lt; size; i++) {</span>
+<span class="source-line-no">403</span><span id="line-403">            
super.remove(toRemove.get(i));</span>
+<span class="source-line-no">404</span><span id="line-404">        }</span>
+<span class="source-line-no">405</span><span id="line-405">    }</span>
+<span class="source-line-no">406</span><span id="line-406"></span>
+<span class="source-line-no">407</span><span id="line-407">    /**</span>
+<span class="source-line-no">408</span><span id="line-408">     * Purges one 
entry whose wrapped key</span>
+<span class="source-line-no">409</span><span id="line-409">     * has been 
garbage collected.</span>
+<span class="source-line-no">410</span><span id="line-410">     */</span>
+<span class="source-line-no">411</span><span id="line-411">    private void 
purgeOne() {</span>
+<span class="source-line-no">412</span><span id="line-412">        
synchronized (queue) {</span>
+<span class="source-line-no">413</span><span id="line-413">            final 
WeakKey key = (WeakKey) queue.poll();</span>
+<span class="source-line-no">414</span><span id="line-414">            if (key 
!= null) {</span>
+<span class="source-line-no">415</span><span id="line-415">                
super.remove(key.getReferenced());</span>
+<span class="source-line-no">416</span><span id="line-416">            }</span>
+<span class="source-line-no">417</span><span id="line-417">        }</span>
+<span class="source-line-no">418</span><span id="line-418">    }</span>
 <span class="source-line-no">419</span><span id="line-419"></span>
-<span class="source-line-no">420</span><span id="line-420">        // for 
performance reasons, only purge every</span>
-<span class="source-line-no">421</span><span id="line-421">        // 
MAX_CHANGES_BEFORE_PURGE times</span>
-<span class="source-line-no">422</span><span id="line-422">        if 
(changeCount++ &gt; MAX_CHANGES_BEFORE_PURGE) {</span>
-<span class="source-line-no">423</span><span id="line-423">            
purge();</span>
-<span class="source-line-no">424</span><span id="line-424">            
changeCount = 0;</span>
-<span class="source-line-no">425</span><span id="line-425">        }</span>
-<span class="source-line-no">426</span><span id="line-426">        // do a 
partial purge more often</span>
-<span class="source-line-no">427</span><span id="line-427">        else if 
(changeCount % PARTIAL_PURGE_COUNT == 0) {</span>
-<span class="source-line-no">428</span><span id="line-428">            
purgeOne();</span>
-<span class="source-line-no">429</span><span id="line-429">        }</span>
-<span class="source-line-no">430</span><span id="line-430"></span>
-<span class="source-line-no">431</span><span id="line-431">        final 
Referenced keyRef = new Referenced(key, queue);</span>
-<span class="source-line-no">432</span><span id="line-432">        return 
super.put(keyRef, value);</span>
-<span class="source-line-no">433</span><span id="line-433">    }</span>
-<span class="source-line-no">434</span><span id="line-434"></span>
-<span class="source-line-no">435</span><span id="line-435">    /**</span>
-<span class="source-line-no">436</span><span id="line-436">     *@see 
Hashtable</span>
-<span class="source-line-no">437</span><span id="line-437">     */</span>
-<span class="source-line-no">438</span><span id="line-438">    @Override</span>
-<span class="source-line-no">439</span><span id="line-439">    public void 
putAll(final Map t) {</span>
-<span class="source-line-no">440</span><span id="line-440">        if (t != 
null) {</span>
-<span class="source-line-no">441</span><span id="line-441">            final 
Set entrySet = t.entrySet();</span>
-<span class="source-line-no">442</span><span id="line-442">            for 
(final Object element : entrySet) {</span>
-<span class="source-line-no">443</span><span id="line-443">                
final Map.Entry entry = (Map.Entry) element;</span>
-<span class="source-line-no">444</span><span id="line-444">                
put(entry.getKey(), entry.getValue());</span>
-<span class="source-line-no">445</span><span id="line-445">            }</span>
-<span class="source-line-no">446</span><span id="line-446">        }</span>
-<span class="source-line-no">447</span><span id="line-447">    }</span>
-<span class="source-line-no">448</span><span id="line-448"></span>
-<span class="source-line-no">449</span><span id="line-449">    /**</span>
-<span class="source-line-no">450</span><span id="line-450">     * @see 
Hashtable</span>
-<span class="source-line-no">451</span><span id="line-451">     */</span>
-<span class="source-line-no">452</span><span id="line-452">    @Override</span>
-<span class="source-line-no">453</span><span id="line-453">    protected void 
rehash() {</span>
-<span class="source-line-no">454</span><span id="line-454">        // purge 
here to save the effort of rehashing dead entries</span>
-<span class="source-line-no">455</span><span id="line-455">        
purge();</span>
-<span class="source-line-no">456</span><span id="line-456">        
super.rehash();</span>
-<span class="source-line-no">457</span><span id="line-457">    }</span>
-<span class="source-line-no">458</span><span id="line-458"></span>
-<span class="source-line-no">459</span><span id="line-459">    /**</span>
-<span class="source-line-no">460</span><span id="line-460">     *@see 
Hashtable</span>
-<span class="source-line-no">461</span><span id="line-461">     */</span>
-<span class="source-line-no">462</span><span id="line-462">    @Override</span>
-<span class="source-line-no">463</span><span id="line-463">    public 
synchronized Object remove(final Object key) {</span>
-<span class="source-line-no">464</span><span id="line-464">        // for 
performance reasons, only purge every</span>
-<span class="source-line-no">465</span><span id="line-465">        // 
MAX_CHANGES_BEFORE_PURGE times</span>
-<span class="source-line-no">466</span><span id="line-466">        if 
(changeCount++ &gt; MAX_CHANGES_BEFORE_PURGE) {</span>
-<span class="source-line-no">467</span><span id="line-467">            
purge();</span>
-<span class="source-line-no">468</span><span id="line-468">            
changeCount = 0;</span>
-<span class="source-line-no">469</span><span id="line-469">        }</span>
-<span class="source-line-no">470</span><span id="line-470">        // do a 
partial purge more often</span>
-<span class="source-line-no">471</span><span id="line-471">        else if 
(changeCount % PARTIAL_PURGE_COUNT == 0) {</span>
-<span class="source-line-no">472</span><span id="line-472">            
purgeOne();</span>
-<span class="source-line-no">473</span><span id="line-473">        }</span>
-<span class="source-line-no">474</span><span id="line-474">        return 
super.remove(new Referenced(key));</span>
-<span class="source-line-no">475</span><span id="line-475">    }</span>
-<span class="source-line-no">476</span><span id="line-476"></span>
-<span class="source-line-no">477</span><span id="line-477">    /**</span>
-<span class="source-line-no">478</span><span id="line-478">     *@see 
Hashtable</span>
-<span class="source-line-no">479</span><span id="line-479">     */</span>
-<span class="source-line-no">480</span><span id="line-480">    @Override</span>
-<span class="source-line-no">481</span><span id="line-481">    public int 
size() {</span>
-<span class="source-line-no">482</span><span id="line-482">        
purge();</span>
-<span class="source-line-no">483</span><span id="line-483">        return 
super.size();</span>
+<span class="source-line-no">420</span><span id="line-420">    /**</span>
+<span class="source-line-no">421</span><span id="line-421">     *@see 
Hashtable</span>
+<span class="source-line-no">422</span><span id="line-422">     */</span>
+<span class="source-line-no">423</span><span id="line-423">    @Override</span>
+<span class="source-line-no">424</span><span id="line-424">    public 
synchronized Object put(final Object key, final Object value) {</span>
+<span class="source-line-no">425</span><span id="line-425">        // check 
for nulls, ensuring semantics match superclass</span>
+<span class="source-line-no">426</span><span id="line-426">        
Objects.requireNonNull(key, "key");</span>
+<span class="source-line-no">427</span><span id="line-427">        
Objects.requireNonNull(value, "value");</span>
+<span class="source-line-no">428</span><span id="line-428"></span>
+<span class="source-line-no">429</span><span id="line-429">        // for 
performance reasons, only purge every</span>
+<span class="source-line-no">430</span><span id="line-430">        // 
MAX_CHANGES_BEFORE_PURGE times</span>
+<span class="source-line-no">431</span><span id="line-431">        if 
(changeCount++ &gt; MAX_CHANGES_BEFORE_PURGE) {</span>
+<span class="source-line-no">432</span><span id="line-432">            
purge();</span>
+<span class="source-line-no">433</span><span id="line-433">            
changeCount = 0;</span>
+<span class="source-line-no">434</span><span id="line-434">        }</span>
+<span class="source-line-no">435</span><span id="line-435">        // do a 
partial purge more often</span>
+<span class="source-line-no">436</span><span id="line-436">        else if 
(changeCount % PARTIAL_PURGE_COUNT == 0) {</span>
+<span class="source-line-no">437</span><span id="line-437">            
purgeOne();</span>
+<span class="source-line-no">438</span><span id="line-438">        }</span>
+<span class="source-line-no">439</span><span id="line-439"></span>
+<span class="source-line-no">440</span><span id="line-440">        final 
Referenced keyRef = new Referenced(key, queue);</span>
+<span class="source-line-no">441</span><span id="line-441">        return 
super.put(keyRef, value);</span>
+<span class="source-line-no">442</span><span id="line-442">    }</span>
+<span class="source-line-no">443</span><span id="line-443"></span>
+<span class="source-line-no">444</span><span id="line-444">    /**</span>
+<span class="source-line-no">445</span><span id="line-445">     *@see 
Hashtable</span>
+<span class="source-line-no">446</span><span id="line-446">     */</span>
+<span class="source-line-no">447</span><span id="line-447">    @Override</span>
+<span class="source-line-no">448</span><span id="line-448">    public void 
putAll(final Map t) {</span>
+<span class="source-line-no">449</span><span id="line-449">        if (t != 
null) {</span>
+<span class="source-line-no">450</span><span id="line-450">            final 
Set entrySet = t.entrySet();</span>
+<span class="source-line-no">451</span><span id="line-451">            for 
(final Object element : entrySet) {</span>
+<span class="source-line-no">452</span><span id="line-452">                
final Map.Entry entry = (Map.Entry) element;</span>
+<span class="source-line-no">453</span><span id="line-453">                
put(entry.getKey(), entry.getValue());</span>
+<span class="source-line-no">454</span><span id="line-454">            }</span>
+<span class="source-line-no">455</span><span id="line-455">        }</span>
+<span class="source-line-no">456</span><span id="line-456">    }</span>
+<span class="source-line-no">457</span><span id="line-457"></span>
+<span class="source-line-no">458</span><span id="line-458">    /**</span>
+<span class="source-line-no">459</span><span id="line-459">     * @see 
Hashtable</span>
+<span class="source-line-no">460</span><span id="line-460">     */</span>
+<span class="source-line-no">461</span><span id="line-461">    @Override</span>
+<span class="source-line-no">462</span><span id="line-462">    protected void 
rehash() {</span>
+<span class="source-line-no">463</span><span id="line-463">        // purge 
here to save the effort of rehashing dead entries</span>
+<span class="source-line-no">464</span><span id="line-464">        
purge();</span>
+<span class="source-line-no">465</span><span id="line-465">        
super.rehash();</span>
+<span class="source-line-no">466</span><span id="line-466">    }</span>
+<span class="source-line-no">467</span><span id="line-467"></span>
+<span class="source-line-no">468</span><span id="line-468">    /**</span>
+<span class="source-line-no">469</span><span id="line-469">     *@see 
Hashtable</span>
+<span class="source-line-no">470</span><span id="line-470">     */</span>
+<span class="source-line-no">471</span><span id="line-471">    @Override</span>
+<span class="source-line-no">472</span><span id="line-472">    public 
synchronized Object remove(final Object key) {</span>
+<span class="source-line-no">473</span><span id="line-473">        // for 
performance reasons, only purge every</span>

[... 48 lines stripped ...]


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