Merlin Beta-b60, JTree throws exceptions under all windows platforms

Name: jbT81659 Date: 04/19/2001

OS: all Windows platforms
JDK: 1.4.0-b60
TestCase: jdk/demo/jfc/SampleTree/SampleTree.jar
JTree throws exeptions under all window platforms. Here is an example of the exceptions thrown:
----------------------------

J:\builds\jdk\win32\demo\jfc\SampleTree>java -jar SampleTree.jar
java.lang.NullPointerException
        at javax.swing.text.CompositeView.replace(CompositeView.java:199)
        at javax.swing.text.BoxView.replace(BoxView.java:160)
        at javax.swing.text.View.append(View.java:427)
        at javax.swing.text.FlowView$FlowStrategy.layoutRow(FlowView.java:492)
        at javax.swing.text.TextLayoutStrategy.layoutRow(TextLayoutStrategy.java
:111)
        at javax.swing.text.FlowView$FlowStrategy.layout(FlowView.java:395)
        at javax.swing.text.TextLayoutStrategy.layout(TextLayoutStrategy.java:94
)
        at javax.swing.text.FlowView.layout(FlowView.java:185)
        at javax.swing.text.BoxView.setSize(BoxView.java:375)
        at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:
1518)
        at javax.swing.plaf.basic.BasicTextUI.modelToView(BasicTextUI.java:854)
        at javax.swing.plaf.basic.BasicTextUI.modelToView(BasicTextUI.java:830)
        at javax.swing.text.JTextComponent.modelToView(JTextComponent.java:1025)

        at javax.swing.text.DefaultCaret.setVisible(DefaultCaret.java:702)
        at javax.swing.plaf.basic.BasicTextFieldUI$BasicFieldCaret.stateChanged(
BasicTextFieldUI.java:211)
        at javax.swing.DefaultBoundedRangeModel.fireStateChanged(DefaultBoundedR
angeModel.java:349)
        at javax.swing.DefaultBoundedRangeModel.setRangeProperties(DefaultBounde
dRangeModel.java:286)
        at javax.swing.plaf.basic.BasicTextFieldUI$I18nFieldView.adjustAllocatio
n(BasicTextFieldUI.java:277)
        at javax.swing.plaf.basic.BasicTextFieldUI$I18nFieldView.insertUpdate(Ba
sicTextFieldUI.java:447)
        at javax.swing.plaf.basic.BasicTextUI$RootView.insertUpdate(BasicTextUI.
java:1406)
        at javax.swing.plaf.basic.BasicTextUI$UpdateHandler.insertUpdate(BasicTe
xtUI.java:1640)
        at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.j
ava:185)
        at javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument
.java:680)
        at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:
640)
        at javax.swing.text.PlainDocument.insertString(PlainDocument.java:117)
        at javax.swing.text.JTextComponent.setText(JTextComponent.java:1290)
        at javax.swing.DefaultCellEditor$1.setValue(DefaultCellEditor.java:71)
        at javax.swing.DefaultCellEditor.getTreeCellEditorComponent(DefaultCellE
ditor.java:228)
        at javax.swing.tree.DefaultTreeCellEditor.getTreeCellEditorComponent(Def
aultTreeCellEditor.java:201)
        at javax.swing.plaf.basic.BasicTreeUI.startEditing(BasicTreeUI.java:1929
)
        at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.handleSelection(Basic
TreeUI.java:2792)
        at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.mousePressed(BasicTre
eUI.java:2760)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
1)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.Component.processMouseEvent(Component.java:4903)
----------------------------
To reproduce bug:
1. go to ../jdk/demo/jfc/SampleTree
   this directory comes bundled with the jdk or the build
2. in this directory execute the file SampleTree.jar using this command
   java -jar SampleTree.jar
3. in the JTree frame click the editable checkbox
4. play with the text of the node by adding/deleting text or changing the component orientation of the text
5. note that exepctions are thrown on the MS-DOS prompt
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