[ jEdit-devel ] Fwd: How to solve the null pointer exception in ctagsinterface

[hongwei h. <ne...@gm...>]

---------- Forwarded message ----------
From: hongwei hou <ne...@gm...>
Date: 2009/12/31
Subject: How to solve the null pointer exception in ctagsinterface
To: jEd...@li...


Hi everyone I use the ctagsinterface plugin in the jedit 4.3 final .But it
occurs a serious problem :


   1. *java.lang.NullPointerException*
   2. *    at ctagsinterface.db.TagDB.query(TagDB.java:491)*
   3. *    at ctagsinterface.db.TagDB.query(TagDB.java:487)*
   4. *    at ctagsinterface.db.TagDB.queryTag(TagDB.java:339)*
   5. *    at
   ctagsinterface.main.CtagsInterfacePlugin.queryScopedTag(CtagsInterfacePlugin.java:273)
   *
   6. *    at
   ctagsinterface.main.CtagsInterfacePlugin.jumpToTag(CtagsInterfacePlugin.java:292)
   *
   7. *    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)*
   8. *    at
   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   *
   9. *    at
   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   *
   10. *    at java.lang.reflect.Method.invoke(Method.java:597)*
   11. *    at org.gjt.sp.jedit.bsh.Reflect.invokeMethod(Reflect.java:134)*
   12. *    at
   org.gjt.sp.jedit.bsh.Reflect.invokeStaticMethod(Reflect.java:98)*
   13. *    at org.gjt.sp.jedit.bsh.Name.invokeMethod(Name.java:871)*
   14. *    at
   org.gjt.sp.jedit.bsh.BSHMethodInvocation.eval(BSHMethodInvocation.java:75)
   *
   15. *    at
   org.gjt.sp.jedit.bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:102)
   *
   16. *    at
   org.gjt.sp.jedit.bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:47)
   *
   17. *    at org.gjt.sp.jedit.bsh.BSHBlock.evalBlock(BSHBlock.java:130)*
   18. *    at org.gjt.sp.jedit.bsh.BSHBlock.eval(BSHBlock.java:80)*
   19. *    at org.gjt.sp.jedit.bsh.BshMethod.invokeImpl(BshMethod.java:362)
   *
   20. *    at org.gjt.sp.jedit.bsh.BshMethod.invoke(BshMethod.java:258)*
   21. *    at org.gjt.sp.jedit.bsh.BshMethod.invoke(BshMethod.java:186)*
   22. *    at
   org.gjt.sp.jedit.BeanShellFacade.runCachedBlock(BeanShellFacade.java:225)
   *
   23. *    at org.gjt.sp.jedit.BeanShell.runCachedBlock(BeanShell.java:423)
   *
   24. *    at
   org.gjt.sp.jedit.BeanShellAction.invoke(BeanShellAction.java:73)*
   25. *    at
   org.gjt.sp.jedit.gui.InputHandler.invokeAction(InputHandler.java:352)*
   26. *    at org.gjt.sp.jedit.jEdit$4.invokeAction(jEdit.java:3255)*
   27. *    at org.gjt.sp.jedit.jEdit$4.invokeAction(jEdit.java:3237)*
   28. *    at
   org.gjt.sp.jedit.EditAction$Wrapper.actionPerformed(EditAction.java:221)*
   29. *    at
   javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)*
   30. *    at
   javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   *
   31. *    at
   javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   *
   32. *    at
   javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)*
   33. *    at javax.swing.AbstractButton.doClick(AbstractButton.java:357)*
   34. *    at
   javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225)
   *
   35. *    at
   javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266)
   *
   36. *    at
   java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)*
   37. *    at java.awt.Component.processMouseEvent(Component.java:6263)*
   38. *    at
   javax.swing.JComponent.processMouseEvent(JComponent.java:3267)*
   39. *    at java.awt.Component.processEvent(Component.java:6028)*
   40. *    at java.awt.Container.processEvent(Container.java:2041)*
   41. *    at java.awt.Component.dispatchEventImpl(Component.java:4630)*
   42. *    at java.awt.Container.dispatchEventImpl(Container.java:2099)*
   43. *    at java.awt.Component.dispatchEvent(Component.java:4460)*
   44. *    at
   java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)*
   45. *    at
   java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)*
   46. *    at
   java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)*
   47. *    at java.awt.Container.dispatchEventImpl(Container.java:2085)*
   48. *    at java.awt.Window.dispatchEventImpl(Window.java:2475)*
   49. *    at java.awt.Component.dispatchEvent(Component.java:4460)*
   50. *    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)*
   51. *    at
   java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   *
   52. *    at
   java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   *
   53. *    at
   java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   *
   54. *    at
   java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)*
   55. *    at
   java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)*
   56. *    at
   java.awt.EventDispatchThread.run(EventDispatchThread.java:122)*

Actually i have attached a ctags file to it,but it can't works! What would i
do?