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https://issues.apache.org/jira/browse/JDO-780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16919631#comment-16919631
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XiangzheXu commented on JDO-780:
--------------------------------
Thank you for your reminder! Sorry for violating the code conventions. I've
uploaded a new version to this issue.
> Potential NullPointerException in code
> --------------------------------------
>
> Key: JDO-780
> URL: https://issues.apache.org/jira/browse/JDO-780
> Project: JDO
> Issue Type: Bug
> Components: tck
> Affects Versions: JDO 3.2
> Reporter: XiangzheXu
> Assignee: Michael Bouschen
> Priority: Major
> Labels: NullPointerException
> Fix For: JDO 3.2
>
> Attachments: new-patch-for-jdo780.patch, patch-for-780.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> In class org.apache.jdo.exectck.Utilities, the method `printClasspath()`
> could throw an unexpected NullPointerException.
> The related part of that method is shown as follows.
> ```java
> public void printClasspath() {
> ClassLoader loader = ClassLoader.getSystemClassLoader();
> 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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