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https://issues.apache.org/jira/browse/NETBEANS-4549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17158518#comment-17158518
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albert Steiner commented on NETBEANS-4549:
------------------------------------------
I found that this problem is solved at Java-15 #30
> class javax.swing.DebugGraphics cannot be cast to class java.awt.Graphics2D
> ----------------------------------------------------------------------------
>
> Key: NETBEANS-4549
> URL: https://issues.apache.org/jira/browse/NETBEANS-4549
> Project: NetBeans
> Issue Type: Bug
> Components: javaee - Code
> Affects Versions: 11.3
> Environment: Windows 10, with netbeans 11.3 set to global library
> open Java 14
> Reporter: albert Steiner
> Priority: Major
> Attachments: StarTrader.java
>
>
> I have worked on this code, a few hours a week for 9 years, so there is a lot
> of history
> The code works for Java1.8_251 but not for open java 13,14,15 Error occurs
> as part of initialization of the program, producing a panel with tabs. I
> produces a blank panel and a fatal exception.
> I don't know if this is a Java bug or a bug in the display code generated
> over the 9 years, so I'm posting this as a possible open netbeans bug.
> source at:
> https://drive.google.com/drive/folders/1M1KxuS_2Zi9iagQlXrlT3dgEpfOa9j76?usp=sharing
> Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: class
> javax.swing.DebugGraphics cannot be cast to class java.awt.Graphics2D
> (javax.swing.DebugGraphics and java.awt.Graphics2D are in module java.desktop
> of loader 'bootstrap')Exception in thread "AWT-EventQueue-0"
> java.lang.ClassCastException: class javax.swing.DebugGraphics cannot be cast
> to class java.awt.Graphics2D (javax.swing.DebugGraphics and
> java.awt.Graphics2D are in module java.desktop of loader 'bootstrap') at
> java.desktop/javax.swing.plaf.synth.SynthGraphicsUtils.paintText(SynthGraphicsUtils.java:331)
> at
> java.desktop/javax.swing.plaf.synth.SynthTabbedPaneUI.paintText(SynthTabbedPaneUI.java:683)
> at
> java.desktop/javax.swing.plaf.synth.SynthTabbedPaneUI.paintTab(SynthTabbedPaneUI.java:633)
> at
> java.desktop/javax.swing.plaf.synth.SynthTabbedPaneUI.paintTabArea(SynthTabbedPaneUI.java:526)
> at
> java.desktop/javax.swing.plaf.synth.SynthTabbedPaneUI.paintTabArea(SynthTabbedPaneUI.java:482)
> at
> java.desktop/javax.swing.plaf.basic.BasicTabbedPaneUI$ScrollableTabPanel.paintComponent(BasicTabbedPaneUI.java:3918)
> at java.desktop/javax.swing.JComponent.paint(JComponent.java:1074) at
> java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907) at
> java.desktop/javax.swing.JComponent.paint(JComponent.java:1083) at
> java.desktop/javax.swing.JViewport.paint(JViewport.java:737) at
> java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907) at
> java.desktop/javax.swing.JComponent.paint(JComponent.java:1083) at
> java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907) at
> java.desktop/javax.swing.JComponent.paint(JComponent.java:1083) at
> java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907) at
> java.desktop/javax.swing.JComponent.paint(JComponent.java:1083) at
> java.desktop/javax.swing.JLayeredPane.paint(JLayeredPane.java:586) at
> java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907) at
> java.desktop/javax.swing.JComponent.paintToOffscreen(JComponent.java:5262) at
> java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBufferedImpl(RepaintManager.java:1643)
> at
> java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1618)
> at
> java.desktop/javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1556)
> at java.desktop/javax.swing.RepaintManager.paint(RepaintManager.java:1323)
> at java.desktop/javax.swing.JComponent.paint(JComponent.java:1060) at
> java.desktop/java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
> at
> java.desktop/sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:75)
> at
> java.desktop/sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:112)
> at java.desktop/java.awt.Container.paint(Container.java:2002) at
> java.desktop/java.awt.Window.paint(Window.java:3928) at
> java.desktop/javax.swing.RepaintManager$4.run(RepaintManager.java:876) at
> java.desktop/javax.swing.RepaintManager$4.run(RepaintManager.java:848) at
> java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
> at
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
> at
> java.desktop/javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:848)
> at
> java.desktop/javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:823)
> at
> java.desktop/javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:772)
> at
> java.desktop/javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1884)
> at
> java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:316)
> at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
> at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) at
> java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715) at
> java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
> at
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
> at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740) 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)
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