modèle JList provoque StackOverflowError

Je ne sais pas pourquoi, mais ce code provoque une StackOverflowError:modèle JList provoque StackOverflowError

public void update() { 
    DefaultListModel lm = new DefaultListModel(); 
    if (elements != null) 
    for (String elem : elements) { 
     lm.addElement(lm); 
    } 
    jList1.setModel(lm); 
    repaint(); 
    }

J'ai essayé cela et le débogage en fait le StackOverflowError se passe en dehors (je suppose que dans la file d'attente d'événements AWT ....), voici ce que je vois dans la console:

d'abord ce plusieurs fois:

at javax.swing.DefaultListModel.toString(DefaultListModel.java:397) 
    at java.lang.String.valueOf(String.java:2826) 
    at java.lang.StringBuilder.append(StringBuilder.java:115) 
    at java.util.AbstractCollection.toString(AbstractCollection.java:422) 
    at java.util.Vector.toString(Vector.java:940) 
    at javax.swing.DefaultListModel.toString(DefaultListModel.java:397) 
    at java.lang.String.valueOf(String.java:2826)

Ensuite, il répète ce (tous dans la même trace de la pile):

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at java.awt.Window.dispatchEventImpl(Window.java:2476) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.paint(BasicTabbedPaneUI.java:770) 
    at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) 
    at javax.swing.JComponent.paintComponent(JComponent.java:752) 
    at javax.swing.JComponent.paint(JComponent.java:1029) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paint(JComponent.java:1038) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paint(JComponent.java:1038) 
    at javax.swing.JLayeredPane.paint(JLayeredPane.java:567) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paintToOffscreen(JComponent.java:5131) 
    at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479) 
    at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410) 
    at javax.swing.RepaintManager.paint(RepaintManager.java:1224) 
    at javax.swing.JComponent.paint(JComponent.java:1015) 
    at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21) 
    at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60) 
    at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97) 
    at java.awt.Container.paint(Container.java:1780) 
    at java.awt.Window.paint(Window.java:3375) 
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796) 
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713) 
    at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693) 
    at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125) 
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.paint(BasicTabbedPaneUI.java:770) 
    at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) 
    at javax.swing.JComponent.paintComponent(JComponent.java:752) 
    at javax.swing.JComponent.paint(JComponent.java:1029) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paint(JComponent.java:1038) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paint(JComponent.java:1038) 
    at javax.swing.JLayeredPane.paint(JLayeredPane.java:567) 
    at javax.swing.JComponent.paintChildren(JComponent.java:862) 
    at javax.swing.JComponent.paintToOffscreen(JComponent.java:5131) 
    at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479) 
    at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410) 
    at javax.swing.RepaintManager.paint(RepaintManager.java:1224) 
    at javax.swing.JComponent.paint(JComponent.java:1015) 
    at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21) 
    at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60) 
    at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97) 
    at java.awt.Container.paint(Container.java:1780) 
    at java.awt.Window.paint(Window.java:3375) 
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796) 
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713) 
    at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693) 
    at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125) 
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:86) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.layoutContainer(BasicTabbedPaneUI.java:2384) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:89) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.setRolloverTab(BasicTabbedPaneUI.java:558) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.access$2000(BasicTabbedPaneUI.java:37) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mouseMoved(BasicTabbedPaneUI.java:3645) 
    at java.awt.Component.processMouseMotionEvent(Component.java:6312) 
    at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285) 
    at java.awt.Component.processEvent(Component.java:6036) 
    at java.awt.Container.processEvent(Container.java:2041) 
    at java.awt.Component.dispatchEventImpl(Component.java:4630) 
    at java.awt.Container.dispatchEventImpl(Container.java:2099) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) 
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4251) 
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) 
    at java.awt.Container.dispatchEventImpl(Container.java:2085) 
    at java.awt.Window.dispatchEventImpl(Window.java:2478) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:86) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.layoutContainer(BasicTabbedPaneUI.java:2384) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:89) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.setRolloverTab(BasicTabbedPaneUI.java:558) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.access$2000(BasicTabbedPaneUI.java:37) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mouseMoved(BasicTabbedPaneUI.java:3645) 
    at java.awt.Component.processMouseMotionEvent(Component.java:6312) 
    at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285) 
    at java.awt.Component.processEvent(Component.java:6036) 
    at java.awt.Container.processEvent(Container.java:2041) 
    at java.awt.Component.dispatchEventImpl(Component.java:4630) 
    at java.awt.Container.dispatchEventImpl(Container.java:2099) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) 
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4251) 
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) 
    at java.awt.Container.dispatchEventImpl(Container.java:2085) 
    at java.awt.Window.dispatchEventImpl(Window.java:2478) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 
    at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:444) 
    at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:415) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validateTree(Container.java:1513) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:86) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.layoutContainer(BasicTabbedPaneUI.java:2384) 
    at java.awt.Container.layout(Container.java:1421) 
    at java.awt.Container.doLayout(Container.java:1410) 
    at java.awt.Container.validateTree(Container.java:1507) 
    at java.awt.Container.validate(Container.java:1480) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.ensureCurrentLayout(BasicTabbedPaneUI.java:1429) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds(BasicTabbedPaneUI.java:1449) 
    at com.sun.java.swing.plaf.windows.WindowsTabbedPaneUI.setRolloverTab(WindowsTabbedPaneUI.java:89) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.setRolloverTab(BasicTabbedPaneUI.java:558) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI.access$2000(BasicTabbedPaneUI.java:37) 
    at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mouseMoved(BasicTabbedPaneUI.java:3645) 
    at java.awt.Component.processMouseMotionEvent(Component.java:6312) 
    at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285) 
    at java.awt.Component.processEvent(Component.java:6036) 
    at java.awt.Container.processEvent(Container.java:2041) 
    at java.awt.Component.dispatchEventImpl(Component.java:4630) 
    at java.awt.Container.dispatchEventImpl(Container.java:2099) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) 
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4251) 
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) 
    at java.awt.Container.dispatchEventImpl(Container.java:2085) 
    at java.awt.Window.dispatchEventImpl(Window.java:2478) 
    at java.awt.Component.dispatchEvent(Component.java:4460) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Exception in thread "AWT-EventQueue-0" Exception in thread "AWT-EventQueue-0"

Une idée?

Source

2011-08-29 gotch4

Je ne vois pas de StackOverflowError, juste une répétition du NPE, qui provient du thread essayant constamment de 'calculateAlignedPositions'. – Thomas

DÉSOLÉ MATES, ERREUR VRAIMENT STUPIDE, SUPPRIMER LA QUESTION – gotch4

Vous ajoutez la liste comme élément à lui-même, des résultats de cours à récursivité sans fin lorsque vous essayez de convertir récursive à une chaîne:

lm.addElement(lm);

Vous avez probablement voulu dire ceci:

lm.addElement(elem);

Les NullPointerException s peuvent disparaître après la résolution de ces problèmes ou peuvent ne pas être liés.

Source

2011-08-29 14:53:22

modèle JList provoque StackOverflowError

Répondre

Questions connexes