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Subject:
Re: [cp-patches] Comparable in java.util.Calendar
From:
Mark Wielaard [EMAIL PROTECTED]
To:
Kendall Bell [EMAIL PROTECTED]
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Hi Kendall,
On Tue, 2005-11-22 at 09:55 -0600, Kendall Bell wrote:
2005-11-21 Kendall Bell [EMAIL PROTECTED]
* java/util/Calendar.java:
Implemented Comparable.
(compareTo) Method added.
Thanks. Could you also email that to the classpath-patches list so
others can review? Also Tom said that there was another implementation
on the generics branch (he is in Brazil and can apparently not sent
email). Could you compare that implementation with your implementation?
http://www.gnu.org/philosophy/java-trap.html
Join the community at http://planet.classpath.org/
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Index: classpath/java/util/Calendar.java
===
RCS file: /cvsroot/classpath/classpath/java/util/Calendar.java,v
retrieving revision 1.47
diff -u -r1.47 Calendar.java
--- classpath/java/util/Calendar.java 1 Oct 2005 19:45:23 - 1.47
+++ classpath/java/util/Calendar.java 22 Nov 2005 15:40:58 -
@@ -103,7 +103,7 @@
* @see TimeZone
* @see java.text.DateFormat
*/
-public abstract class Calendar implements Serializable, Cloneable
+public abstract class Calendar implements Serializable, Cloneable, Comparable
{
/**
* Constant representing the era time field.
@@ -1290,5 +1290,18 @@
isSet = new boolean[FIELD_COUNT];
areFieldsSet = false;
}
+ }
+
+ /**
+ *Compares the time values (in millisecond offsets) represented by two Calendar objects.
+ * @param c the calendar to that we should compare.
+ * @return 0, if the given calendar is equal, -1 if it is less then, or 1 if greater then.
+ */
+ public int compareTo(Calendar c)
+ {
+if (getTimeInMillis() == c.getTimeInMillis())
+ return 0;
+// Returns just -1 or 1 on inequality;
+return getTimeInMillis() c.getTimeInMillis() ? 1 : -1;
}
}
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