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Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/class
Caused by: java.lang.ClassNotFoundException: HelloWorld.class
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: HelloWorld.class.  Program will exit.
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Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/class


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