XiangzheXu created JDO-780:
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Summary: Potential NullPointerException in code
Key: JDO-780
URL: https://issues.apache.org/jira/browse/JDO-780
Project: JDO
Issue Type: Bug
Affects Versions: JDO 3.2
Reporter: XiangzheXu
In class org.apache.jdo.exectck.Utilities, the method `printClasspath()` could
throw an unexpected NullPointerException.
The method is shown as follows.
public void printClasspath() {
//Get the System Classloader
ClassLoader loader = ClassLoader.getSystemClassLoader();
//Get the URLs
URL[] urls = ((URLClassLoader) loader).getURLs();
......
}
The invocation of `ClassLoader.getSystemClassLoader()` could return null in JDK
8, as is depicted in the Javadoc in its source code:
@return The system <tt>ClassLoader</tt> for delegation, or
<tt>null</tt> if none
If that is the case, the invocation to `getURLs()` could cause a
NullPointerException.
Maybe we could check for null pointer here or mention the potential
NullPointerException at the Javadoc?
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