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java.lang.NullPointerException at javax.swing.ImageIcon.<init>(ImageIcon.java:138) at test.NewJFrame.initComponents(NewJFrame.java:31) at test.NewJFrame.<init>(NewJFrame.java:17) at test.NewJFrame$2.run(NewJFrame.java:55) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) 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)