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Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException:
Hi all,
Iam using GroupLayout to layout components in a JFrame. The frame inturn has three JPanels ( which also use GroupLayout to layout their contents) . When the following code is executed,
midlePanelLayout.setHorizontalGroup(
midlePanelLayout.createParallelGroup(GroupLayout.A lignment.LEADING).addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, size1, GroupLayout.PREFERRED_SIZE).addComponent(buttonPan el, GroupLayout.PREFERRED_SIZE, size1, GroupLayout.PREFERRED_SIZE));
midlePanelLayout.setVerticalGroup(
midlePanelLayout.createSequentialGroup().addCompon ent(scrollPane, GroupLayout.PREFERRED_SIZE, size2, GroupLayout.PREFERRED_SIZE).addComponent(buttonPan el, GroupLayout.PREFERRED_SIZE, size3, GroupLayout.PREFERRED_SIZE));
the following exception is thrown :
Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: javax.swing.JScrollPane[,0,0,0x0,invalid,layout=javax.swing.ScrollPaneLayo ut$UIResource,alignmentX=0.0,alignmentY=0.0,border =javax.swing.plaf.metal.MetalBorders$ScrollPaneBor der@941db6,flags=16777544,maximumSize=,minimumSize =,preferredSize=,columnHeader=,horizontalScrollBar =javax.swing.JScrollPane$ScrollBar[,0,0,0x0,invalid,layout=javax.swing.plaf.metal.Met alScrollBarUI,alignmentX=0.0,alignmentY=0.0,border =,flags=4194632,maximumSize=,minimumSize=,preferre dSize=,blockIncrement=10,orientation=HORIZONTAL,un itIncrement=1],horizontalScrollBarPolicy=HORIZONTAL_SCROLLBAR_AS _NEEDED,lowerLeft=,lowerRight=,rowHeader=,upperLef t=,upperRight=,verticalScrollBar=javax.swing.JScro llPane$ScrollBar[,0,0,0x0,invalid,layout=javax.swing.plaf.metal.Met alScrollBarUI,alignmentX=0.0,alignmentY=0.0,border =,flags=4194632,maximumSize=,minimumSize=,preferre dSize=,blockIncrement=10,orientation=VERTICAL,unit Increment=1],verticalScrollBarPolicy=VERTICAL_SCROLLBAR_AS_NEE DED,viewport=javax.swing.JViewport[,0,0,0x0,invalid,layout=javax.swing.ViewportLayout ,alignmentX=0.0,alignmentY=0.0,border=,flags=25165 832,maximumSize=,minimumSize=,preferredSize=,isVie wSizeSet=false,lastPaintPosition=,scrollUnderway=f alse],viewportBorder=] is not attached to a vertical group
at javax.swing.GroupLayout.checkComponents(GroupLayou t.java:1069)
at javax.swing.GroupLayout.prepare(GroupLayout.java:1 019)
at javax.swing.GroupLayout.minimumLayoutSize(GroupLay out.java:875)
at java.awt.Container.minimumSize(Container.java:1668 )
at java.awt.Container.getMinimumSize(Container.java:1 653)
at javax.swing.JComponent.getMinimumSize(JComponent.j ava:1709)
at javax.swing.GroupLayout$ComponentSpring.calculateN onlinkedMinimumSize(GroupLayout.java:2933)
at javax.swing.GroupLayout$ComponentSpring.calculateM inimumSize(GroupLayout.java:2897)
at javax.swing.GroupLayout$Spring.getMinimumSize(Grou pLayout.java:1315)
at javax.swing.GroupLayout$Group.getSpringSize(GroupL ayout.java:1602)
at javax.swing.GroupLayout$Group.calculateSize(GroupL ayout.java:1593)
at javax.swing.GroupLayout$Group.calculateMinimumSize (GroupLayout.java:1564)
at javax.swing.GroupLayout$ParallelGroup.calculateMin imumSize(GroupLayout.java:2499)
at javax.swing.GroupLayout$Spring.getMinimumSize(Grou pLayout.java:1315)
at javax.swing.GroupLayout$Group.getSpringSize(GroupL ayout.java:1602)
at javax.swing.GroupLayout$Group.calculateSize(GroupL ayout.java:1588)
at javax.swing.GroupLayout$Group.calculateMinimumSize (GroupLayout.java:1564)
at javax.swing.GroupLayout$Spring.getMinimumSize(Grou pLayout.java:1315)
at javax.swing.GroupLayout.calculateAutopadding(Group Layout.java:1047)
at javax.swing.GroupLayout.prepare(GroupLayout.java:1 037)
at javax.swing.GroupLayout.minimumLayoutSize(GroupLay out.java:875)
at java.awt.Container.minimumSize(Container.java:1668 )
at java.awt.Container.getMinimumSize(Container.java:1 653)
at javax.swing.JComponent.getMinimumSize(JComponent.j ava:1709)
at javax.swing.GroupLayout$ComponentSpring.calculateN onlinkedMinimumSize(GroupLayout.java:2933)
at javax.swing.GroupLayout$ComponentSpring.calculateM inimumSize(GroupLayout.java:2897)
at javax.swing.GroupLayout$Spring.getMinimumSize(Grou pLayout.java:1315)
at javax.swing.GroupLayout$ComponentSpring.calculateP referredSize(GroupLayout.java:2904)
at javax.swing.GroupLayout$Spring.getPreferredSize(Gr oupLayout.java:1325)
at javax.swing.GroupLayout$Group.getSpringSize(GroupL ayout.java:1604)
at javax.swing.GroupLayout$Group.calculateSize(GroupL ayout.java:1588)
at javax.swing.GroupLayout$Group.calculatePreferredSi ze(GroupLayout.java:1568)
at javax.swing.GroupLayout$Spring.getPreferredSize(Gr oupLayout.java:1325)
at javax.swing.GroupLayout$Group.getSpringSize(GroupL ayout.java:1604)
at javax.swing.GroupLayout$Group.calculateSize(GroupL ayout.java:1588)
at javax.swing.GroupLayout$Group.calculatePreferredSi ze(GroupLayout.java:1568)
at javax.swing.GroupLayout$Spring.getPreferredSize(Gr oupLayout.java:1325)
at javax.swing.GroupLayout$SequentialGroup.setValidSi ze(GroupLayout.java:1972)
at javax.swing.GroupLayout$Group.setSize(GroupLayout. java:1553)
at javax.swing.GroupLayout.layoutContainer(GroupLayou t.java:903)
at java.awt.Container.layout(Container.java:1432)
at java.awt.Container.doLayout(Container.java:1421)
at java.awt.Container.validateTree(Container.java:151 9)
at java.awt.Container.validateTree(Container.java:152 6)
at java.awt.Container.validateTree(Container.java:152 6)
at java.awt.Container.validate(Container.java:1491)
at javax.swing.RepaintManager.validateInvalidComponen ts(RepaintManager.java:635)
at javax.swing.SystemEventQueueUtilities$ComponentWor kRequest.run(SystemEventQueueUtilities.java:127)
at java.awt.event.InvocationEvent.dispatch(Invocation Event.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java: 597)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:121)
This is the code for creating the JScrollPane :
formPanel = new JPanel();
scrollPane = new JScrollPane(formPanel);
formPanel.setBackground(new Color(0, 0, 0));
formPanelLayout = new GroupLayout(formPanel);
formPanel.setLayout(formPanelLayout);
Can anybody tell me why the Exception is getting thrown for the GroupLayout ? Any help is greatly appreciated ?
Thanks
Satish
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Linear Mode
