java.lang.NullPointerException: This exception has no message.

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via Coderanch by Manoj Syoran, 1 year ago
This exception has no message.
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java.lang.NullPointerException:
at java.awt.Container.addImpl(Container.java:1019)
at java.awt.Container.add(Container.java:351)
at undefined.Sys_adm.actionPerformed(product.java:217)
at java.awt.MenuItem.processActionEvent(MenuItem.java:597)
at java.awt.MenuItem.processEvent(MenuItem.java:556)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:298)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:286)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:466)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

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