JDK-7067922 : (launcher) java -jar throws NPE if JAR file does not contain Main-Class attribute
- Type: Bug
- Component: tools
- Sub-Component: launcher
- Affected Version: 7
- Priority: P3
- Status: Closed
- Resolution: Fixed
- OS: generic,windows_7
- CPU: generic,x86
- Submitted: 2011-07-15
- Updated: 2012-04-30
- Resolved: 2012-04-21
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| JDK 7 | JDK 8 |
|---|---|
7u2Fixed  |
8 b01Fixed |
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Description
If you create a jar file WITHOUT a ���Main-Class��� manifest field, and you try to run it by java ���jar xxx.jar using Java 7 b147, you get this:
Exception in thread "main" java.lang.NullPointerException
at sun.launcher.LauncherHelper.getMainClassFromJar(LauncherHelper.java:399)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:463)
However if you do the same thing in Java 6, you get this:
Failed to load Main-Class manifest attribute from
stringbenchmarkmissingmainclass.jar
Comments
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