NPE when Evaulate Expression window is opening #8749
Description
Apache NetBeans version
Apache NetBeans 27
What happened
When I try to open Evaulate Expression window I can see NPE and wrong content of this window
After some time this invalid content is hidden and the window is inactive (I cannot see cursor or type some text).
Sometime this state is reverted and the second attempt shows correct Evaulate Expression window but usually it stays in an invalid state.
Log
SEVERE [org.openide.util.Exceptions]
java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "key" is null
at java.base/java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:948)
at org.netbeans.api.editor.mimelookup.MimePath.parse(MimePath.java:203)
at org.netbeans.api.editor.mimelookup.MimeLookup.getLookup(MimeLookup.java:111)
at org.netbeans.spi.editor.highlighting.support.HighlightsContainers$1InlineHintsSettingsAwareContainer.<init>(HighlightsContainers.java:41)
at org.netbeans.spi.editor.highlighting.support.HighlightsContainers.inlineHintsSettingAwareContainer(HighlightsContainers.java:78)
at org.netbeans.modules.java.editor.semantic.HighlightsLayerFactoryImpl.createLayers(HighlightsLayerFactoryImpl.java:42)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllLayersImpl(HighlightingManager.java:378)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting$4.run(HighlightingManager.java:357)
at java.desktop/javax.swing.text.AbstractDocument.render(AbstractDocument.java:442)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAllLayers(HighlightingManager.java:354)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.rebuildAll(HighlightingManager.java:340)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager$Highlighting.<init>(HighlightingManager.java:202)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager.<init>(HighlightingManager.java:150)
at org.netbeans.modules.editor.lib2.highlighting.HighlightingManager.getInstance(HighlightingManager.java:78)
at org.netbeans.modules.editor.hints.HintsUI.caretUpdate(HintsUI.java:980)
at org.netbeans.modules.editor.hints.HintsUI.setComponent(HintsUI.java:181)
at org.netbeans.modules.editor.hints.HintsUI.propertyChange(HintsUI.java:902)
at java.desktop/java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:343)
at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:335)
at org.netbeans.api.editor.EditorRegistry.fireEvents(EditorRegistry.java:544)
at org.netbeans.api.editor.EditorRegistry.register(EditorRegistry.java:288)
at org.netbeans.api.editor.EditorRegistry$PackageAccessor.register(EditorRegistry.java:780)
at org.netbeans.editor.BaseTextUI.installUI(BaseTextUI.java:221)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:740)
at java.desktop/javax.swing.text.JTextComponent.setUI(JTextComponent.java:335)
at org.netbeans.editor.BaseKit.install(BaseKit.java:729)
at org.netbeans.modules.editor.java.JavaKit.install(JavaKit.java:278)
at java.desktop/javax.swing.JEditorPane.setEditorKit(JEditorPane.java:1101)
at org.netbeans.api.editor.DialogBinding.bind(DialogBinding.java:149)
at org.netbeans.api.editor.DialogBinding.bindComponentToFile(DialogBinding.java:108)
at org.netbeans.modules.debugger.jpda.ui.WatchPanel$3.run(WatchPanel.java:379)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
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)
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)
Caused: java.lang.reflect.InvocationTargetException
at java.desktop/java.awt.EventQueue.invokeAndWait(EventQueue.java:1312)
at java.desktop/java.awt.EventQueue.invokeAndWait(EventQueue.java:1287)
at java.desktop/javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1474)
[catch] at org.netbeans.modules.debugger.jpda.ui.WatchPanel.setupContext(WatchPanel.java:391)
at org.netbeans.modules.debugger.jpda.ui.WatchPanel.setupContext(WatchPanel.java:154)
at org.netbeans.modules.debugger.jpda.ui.JPDACodeEvaluator.setupContext(JPDACodeEvaluator.java:76)
at org.netbeans.modules.debugger.ui.eval.CodeEvaluatorUI.setupContextLazily(CodeEvaluatorUI.java:236)
at org.netbeans.modules.debugger.ui.eval.CodeEvaluatorUI.access$400(CodeEvaluatorUI.java:67)
at org.netbeans.modules.debugger.ui.eval.CodeEvaluatorUI$2.run(CodeEvaluatorUI.java:208)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1403)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:287)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2018)
SEVERE [global]
java.lang.NullPointerException: Cannot read field "x" because "r" is null
at java.desktop/javax.swing.JComponent.repaint(JComponent.java:4920)
at org.netbeans.api.editor.caret.CaretItem.setCaretBoundsWithRepaint(CaretItem.java:235)
at org.netbeans.api.editor.caret.EditorCaret.update(EditorCaret.java:2046)
at org.netbeans.api.editor.caret.EditorCaret.access$400(EditorCaret.java:143)
at org.netbeans.api.editor.caret.EditorCaret$7.run(EditorCaret.java:1929)
at org.netbeans.api.editor.caret.EditorCaret.dispatchUpdate(EditorCaret.java:1943)
at org.netbeans.api.editor.caret.EditorCaret.runTransaction(EditorCaret.java:1670)
at org.netbeans.api.editor.caret.EditorCaret.setDot(EditorCaret.java:577)
at org.netbeans.api.editor.caret.EditorCaret.setDot(EditorCaret.java:546)
at org.netbeans.api.editor.caret.EditorCaret$ListenerImpl.mousePressed(EditorCaret.java:2851)
at java.desktop/java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:290)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6573)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3404)
at java.desktop/java.awt.Component.processEvent(Component.java:6341)
at java.desktop/java.awt.Container.processEvent(Container.java:2260)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4958)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2318)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4917)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4557)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4501)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2304)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2671)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:725)
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)
Language / Project Type / NetBeans Component
No response
How to reproduce
Start debug a project and during debuging try to open Evaulate Expression window.
Did this work correctly in an earlier version?
No / Don't know
Operating System
Fedora Linux 42 (kernel 6.15.10 and 6.16.2) Wayland
JDK
JDK 24 and JDK 25
Apache NetBeans packaging
Apache NetBeans binary zip
Anything else
No response
Are you willing to submit a pull request?
No