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This exception has no message.
java.lang.NullPointerException: 	at sun.misc.URLClassPath$3.run(URLClassPath.java:313)	at java.security.AccessController.doPrivileged(Native Method)	at sun.misc.URLClassPath.getLoader(URLClassPath.java:310)	at sun.misc.URLClassPath.getLoader(URLClassPath.java:287)	at sun.misc.URLClassPath.getResource(URLClassPath.java:157)	at java.net.URLClassLoader$1.run(URLClassLoader.java:192)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:580)	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:242)	at StandAlone.Runner.main(Runner.java:16)