Java – unable to load main class manifest attribute

• Java

I have an error after exporting from eclipse:

C:\Program Files\Java\jre6\bin>java C:\wamp\www\JOGL\test.jar
Exception in thread "main" java.lang.NoClassDefFoundError: C:\wamp\www\JOGL\test/jar
Caused by: java.lang.ClassNotFoundException: C:\wamp\www\JOGL\test.jar
        at java.net.urlclassloader$1.run(UnkNown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.urlclassloader.findClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
Could not find the main class: C:\wamp\www\JOGL\test.jar.  Program will exit.

Show from this file:

Manifest-Version: 1.0
Sealed: true
Main-Class: windows.SimpleScene

The same error occurred when using fat jar export

to update:

C:\Program Files\Java\jre6\bin>java -jar C:\wamp\www\JOGL\test.jar
Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/opengl/GLEventListener
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(UnkNown Source)
        at java.lang.ClassLoader.defineClass(UnkNown Source)
        at java.security.SecureClassLoader.defineClass(UnkNown Source)
        at java.net.urlclassloader.defineClass(UnkNown Source)
        at java.net.urlclassloader.access$000(UnkNown Source)
        at java.net.urlclassloader$1.run(UnkNown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.urlclassloader.findClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
Caused by: java.lang.ClassNotFoundException: javax.media.opengl.GLEventListener
        at java.net.urlclassloader$1.run(UnkNown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.urlclassloader.findClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(UnkNown Source)
        at java.lang.ClassLoader.loadClass(UnkNown Source)
        ... 12 more
Could not find the main class: windows.SimpleScene. Program will exit.

Solution

To run the jar file, run:

java -jar (name-of-jar-file)

So you should run:

java -jar C:\wamp\www\JOGL\test.jar
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