mbien commented on issue #8843:
URL: https://github.com/apache/netbeans/issues/8843#issuecomment-3408144345
extracted the exception from the provided log:
NPE:
<details>
```
SEVERE [global]
java.lang.NullPointerException: Cannot invoke
"javax.swing.text.View.getEndOffset()" because "child" is null
at
java.desktop/javax.swing.text.TextLayoutStrategy$AttributedSegment.getRunLimit(TextLayoutStrategy.java:472)
at
java.desktop/java.awt.font.StyledParagraph.<init>(StyledParagraph.java:105)
at
java.desktop/java.awt.font.TextMeasurer.initAll(TextMeasurer.java:224)
at java.desktop/java.awt.font.TextMeasurer.<init>(TextMeasurer.java:168)
at
java.desktop/java.awt.font.LineBreakMeasurer.<init>(LineBreakMeasurer.java:311)
at
java.desktop/javax.swing.text.TextLayoutStrategy.sync(TextLayoutStrategy.java:320)
at
java.desktop/javax.swing.text.TextLayoutStrategy.insertUpdate(TextLayoutStrategy.java:79)
at
java.desktop/javax.swing.text.FlowView.loadChildren(FlowView.java:151)
at
java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:137)
at java.desktop/javax.swing.text.FlowView.setParent(FlowView.java:297)
at
java.desktop/javax.swing.text.html.ParagraphView.setParent(ParagraphView.java:75)
at
java.desktop/javax.swing.text.FlowView$LogicalView.forwardUpdateToView(FlowView.java:815)
at java.desktop/javax.swing.text.View.forwardUpdate(View.java:1171)
at
java.desktop/javax.swing.text.FlowView$LogicalView.forwardUpdate(FlowView.java:826)
at java.desktop/javax.swing.text.View.changedUpdate(View.java:798)
at
java.desktop/javax.swing.text.FlowView.changedUpdate(FlowView.java:291)
at
java.desktop/javax.swing.text.ParagraphView.changedUpdate(ParagraphView.java:780)
at
java.desktop/javax.swing.text.View.forwardUpdateToView(View.java:1240)
at java.desktop/javax.swing.text.View.forwardUpdate(View.java:1171)
at java.desktop/javax.swing.text.BoxView.forwardUpdate(BoxView.java:241)
at java.desktop/javax.swing.text.View.changedUpdate(View.java:798)
at
java.desktop/javax.swing.text.html.BlockView.changedUpdate(BlockView.java:341)
at
java.desktop/javax.swing.text.View.forwardUpdateToView(View.java:1240)
at java.desktop/javax.swing.text.View.forwardUpdate(View.java:1171)
at java.desktop/javax.swing.text.BoxView.forwardUpdate(BoxView.java:241)
at java.desktop/javax.swing.text.View.changedUpdate(View.java:798)
at
java.desktop/javax.swing.text.html.BlockView.changedUpdate(BlockView.java:341)
at
java.desktop/javax.swing.text.View.forwardUpdateToView(View.java:1240)
at java.desktop/javax.swing.text.View.forwardUpdate(View.java:1171)
at java.desktop/javax.swing.text.BoxView.forwardUpdate(BoxView.java:241)
at java.desktop/javax.swing.text.View.changedUpdate(View.java:798)
at
java.desktop/javax.swing.text.html.BlockView.changedUpdate(BlockView.java:341)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1739)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI$UpdateHandler.changedUpdate(BasicTextUI.java:2008)
at
java.desktop/javax.swing.text.AbstractDocument.fireChangedUpdate(AbstractDocument.java:249)
at
java.desktop/javax.swing.text.html.HTMLDocument.fireChangedUpdate(HTMLDocument.java:1789)
at
java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.adjustEndElement(HTMLDocument.java:2707)
at
java.desktop/javax.swing.text.html.HTMLDocument$HTMLReader.flush(HTMLDocument.java:2761)
at
java.desktop/javax.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java:318)
at
org.netbeans.modules.java.navigation.HTMLDocView$1.run(HTMLDocView.java:100)
at
java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
at
java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:702)
at
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at
java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at
java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
```
</details>
followed by various index out of bounds exceptions and other NPEs:
<details>
```
SEVERE [global]
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 2
at
java.desktop/javax.swing.text.CompositeView.getView(CompositeView.java:158)
at
java.desktop/javax.swing.text.TextLayoutStrategy$AttributedSegment.getFont(TextLayoutStrategy.java:403)
at
java.desktop/javax.swing.text.TextLayoutStrategy$AttributedSegment.getAttribute(TextLayoutStrategy.java:530)
at
java.desktop/javax.swing.text.TextLayoutStrategy$AttributedSegment.getAttributes(TextLayoutStrategy.java:513)
at
java.desktop/java.awt.font.TextLine.getFontAtCurrentPos(TextLine.java:1284)
at
java.desktop/java.awt.font.TextMeasurer.initAll(TextMeasurer.java:237)
at java.desktop/java.awt.font.TextMeasurer.<init>(TextMeasurer.java:168)
at
java.desktop/java.awt.font.LineBreakMeasurer.<init>(LineBreakMeasurer.java:311)
at
java.desktop/javax.swing.text.TextLayoutStrategy.sync(TextLayoutStrategy.java:320)
at
java.desktop/javax.swing.text.TextLayoutStrategy.insertUpdate(TextLayoutStrategy.java:79)
at
java.desktop/javax.swing.text.FlowView.loadChildren(FlowView.java:151)
at
java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:137)
at java.desktop/javax.swing.text.FlowView.setParent(FlowView.java:297)
at
java.desktop/javax.swing.text.html.ParagraphView.setParent(ParagraphView.java:75)
at
java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:217)
at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
at
java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:112)
at
java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:137)
at
java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
at
java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:217)
at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
at java.desktop/javax.swing.text.View.updateChildren(View.java:1129)
at java.desktop/javax.swing.text.View.removeUpdate(View.java:750)
at
java.desktop/javax.swing.text.View.forwardUpdateToView(View.java:1238)
at java.desktop/javax.swing.text.View.forwardUpdate(View.java:1171)
at java.desktop/javax.swing.text.BoxView.forwardUpdate(BoxView.java:241)
at java.desktop/javax.swing.text.View.removeUpdate(View.java:756)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.removeUpdate(BasicTextUI.java:1725)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI$UpdateHandler.removeUpdate(BasicTextUI.java:1993)
at
java.desktop/javax.swing.text.AbstractDocument.fireRemoveUpdate(AbstractDocument.java:278)
at
java.desktop/javax.swing.text.AbstractDocument.handleRemove(AbstractDocument.java:645)
at
java.desktop/javax.swing.text.AbstractDocument.remove(AbstractDocument.java:613)
at
org.netbeans.modules.java.navigation.HTMLDocView$1.run(HTMLDocView.java:99)
at
java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
at
java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:702)
at
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at
java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at
java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
```
or
```
SEVERE [global]
java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
at
java.desktop/javax.swing.text.html.BlockView.layoutMinorAxis(BlockView.java:262)
at java.desktop/javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:345)
at java.desktop/javax.swing.text.BoxView.layout(BoxView.java:709)
at java.desktop/javax.swing.text.BoxView.setSize(BoxView.java:398)
at
java.desktop/javax.swing.text.BoxView.updateChildSizes(BoxView.java:367)
at java.desktop/javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:335)
at java.desktop/javax.swing.text.BoxView.layout(BoxView.java:710)
at java.desktop/javax.swing.text.BoxView.setSize(BoxView.java:398)
at
java.desktop/javax.swing.text.BoxView.updateChildSizes(BoxView.java:367)
at java.desktop/javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:335)
at java.desktop/javax.swing.text.BoxView.layout(BoxView.java:710)
at java.desktop/javax.swing.text.BoxView.setSize(BoxView.java:398)
...
```
or
```
SEVERE [global]
java.lang.NullPointerException: Cannot invoke
"javax.swing.text.html.StyleSheet$BoxPainter.paint(java.awt.Graphics, float,
float, float, float, javax.swing.text.View)" because "this.painter" is null
at
java.desktop/javax.swing.text.html.BlockView.paint(BlockView.java:281)
at java.desktop/javax.swing.text.BoxView.paintChild(BoxView.java:162)
at java.desktop/javax.swing.text.BoxView.paint(BoxView.java:434)
at
java.desktop/javax.swing.text.html.BlockView.paint(BlockView.java:282)
at java.desktop/javax.swing.text.BoxView.paintChild(BoxView.java:162)
at java.desktop/javax.swing.text.BoxView.paint(BoxView.java:434)
at
java.desktop/javax.swing.text.html.BlockView.paint(BlockView.java:282)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.paint(BasicTextUI.java:1535)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI.paintSafely(BasicTextUI.java:754)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI.paint(BasicTextUI.java:912)
at
java.desktop/javax.swing.plaf.basic.BasicTextUI.update(BasicTextUI.java:891)
at
java.desktop/javax.swing.JComponent.paintComponent(JComponent.java:852)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1128)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at java.desktop/javax.swing.JViewport.paint(JViewport.java:736)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
org.netbeans.swing.tabcontrol.TabbedContainer.paint(TabbedContainer.java:975)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at java.desktop/javax.swing.JLayeredPane.paint(JLayeredPane.java:586)
at
java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:961)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1137)
at
java.desktop/javax.swing.JComponent.paintToOffscreen(JComponent.java:5324)
at
java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBufferedImpl(RepaintManager.java:1599)
at
java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1574)
at
java.desktop/javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1512)
at
java.desktop/javax.swing.RepaintManager.paint(RepaintManager.java:1279)
at
java.desktop/javax.swing.JComponent._paintImmediately(JComponent.java:5272)
at
java.desktop/javax.swing.JComponent.paintImmediately(JComponent.java:5082)
at
java.desktop/javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:825)
at
java.desktop/javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:788)
at
java.desktop/javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
at
java.desktop/javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1840)
at
java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
at
java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:702)
at
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at
java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at
java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at
java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
```
</details>
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