java.lang.NullPointerException

Stack Overflow | Jay | 7 months ago
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    How to check if a file has already been saved using JFilechooser?

    Stack Overflow | 7 months ago | Jay
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at MyFrame.lambda$new$3()
    2. Unknown
      MyFrame.lambda$new$3
      1. MyFrame.lambda$new$3(Editor.java:146)
      1 frame
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
      5. javax.swing.AbstractButton.doClick(AbstractButton.java:376)
      6. javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
      7. javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
      8. java.awt.Component.processMouseEvent(Component.java:6533)
      9. javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
      10. java.awt.Component.processEvent(Component.java:6298)
      11. java.awt.Container.processEvent(Container.java:2236)
      12. java.awt.Component.dispatchEventImpl(Component.java:4889)
      13. java.awt.Container.dispatchEventImpl(Container.java:2294)
      14. java.awt.Component.dispatchEvent(Component.java:4711)
      15. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
      16. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
      17. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
      18. java.awt.Container.dispatchEventImpl(Container.java:2280)
      19. java.awt.Window.dispatchEventImpl(Window.java:2746)
      20. java.awt.Component.dispatchEvent(Component.java:4711)
      21. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
      22. java.awt.EventQueue.access$500(EventQueue.java:97)
      23. java.awt.EventQueue$3.run(EventQueue.java:709)
      24. java.awt.EventQueue$3.run(EventQueue.java:703)
      25. java.security.AccessController.doPrivileged(Native Method)
      26. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      27. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
      28. java.awt.EventQueue$4.run(EventQueue.java:731)
      29. java.awt.EventQueue$4.run(EventQueue.java:729)
      30. java.security.AccessController.doPrivileged(Native Method)
      31. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      32. java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
      33. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
      34. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
      35. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
      36. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
      37. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
      38. java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
      38 frames