java.lang.NullPointerException

Stack Overflow | user7039205 | 4 months ago
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    Java/Swing - How to acess JTextArea from other class

    Stack Overflow | 4 months ago | user7039205
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Execucao.Decodificador.decodificar()
    2. Execucao
      Interface$15.actionPerformed
      1. Execucao.Decodificador.decodificar(Decodificador.java:56)
      2. Execucao.Interface.executar(Interface.java:80)
      3. Execucao.Interface.jBCompilarActionPerformed(Interface.java:531)
      4. Execucao.Interface.access$1300(Interface.java:19)
      5. Execucao.Interface$15.actionPerformed(Interface.java:411)
      5 frames
    3. Java RT
      EventDispatchThread.run
      1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
      2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
      4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
      5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
      6. java.awt.Component.processMouseEvent(Component.java:6535)
      7. javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
      8. java.awt.Component.processEvent(Component.java:6300)
      9. java.awt.Container.processEvent(Container.java:2236)
      10. java.awt.Component.dispatchEventImpl(Component.java:4891)
      11. java.awt.Container.dispatchEventImpl(Container.java:2294)
      12. java.awt.Component.dispatchEvent(Component.java:4713)
      13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
      14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
      15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
      16. java.awt.Container.dispatchEventImpl(Container.java:2280)
      17. java.awt.Window.dispatchEventImpl(Window.java:2750)
      18. java.awt.Component.dispatchEvent(Component.java:4713)
      19. java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
      20. java.awt.EventQueue.access$500(EventQueue.java:97)
      21. java.awt.EventQueue$3.run(EventQueue.java:709)
      22. java.awt.EventQueue$3.run(EventQueue.java:703)
      23. java.security.AccessController.doPrivileged(Native Method)
      24. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      25. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
      26. java.awt.EventQueue$4.run(EventQueue.java:731)
      27. java.awt.EventQueue$4.run(EventQueue.java:729)
      28. java.security.AccessController.doPrivileged(Native Method)
      29. java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
      30. java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
      31. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
      32. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
      33. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
      34. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
      35. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
      36. java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
      36 frames