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java.lang.ClassNotFoundException: displayshelf.Main	at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)	at sun.plugin2.applet.JNLP2ClassLoader.findClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Unknown Source)	at com.sun.javafx.runtime.adapter.Applet.launchStage(Unknown Source)	at com.sun.javafx.runtime.adapter.Applet$1.lambda(Unknown Source)	at com.sun.javafx.runtime.adapter.Applet$1.invoke(Unknown Source)	at com.sun.javafx.runtime.adapter.Applet$1.invoke(Unknown Source)	at com.sun.javafx.runtime.Entry$2.run(Unknown Source)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)