'Dump addition trace' not working
I am using this IntelliJ Plugin and it works great. Only the feature "Dump addition trace" does not work for me. I navigate to a component in he Swing Component Hierarchy tree under the "All Roots" tab and from the right click menu selecting "Dump addition trace", there is no trace in the "Addition trace" tab but there is an exception stack trace in the IntelliJ Idea Run console. I am pasting the stacktrace below.
It appears that the agent(in swag.jar) which instruments the code to collect and store addition traces are not working properly. I have verified via VisualVM that the application was launched properly with the javaagent parameter to the swag.jar file.
Addition trace for component: JFrame[0]/JRootPane[1]/JLayeredPane[0]/JLayer[1]/JPanel[1]/JPanel[0]/JPanel[0]
19:31:23,954 ERROR [ActDumpAdditionTrace] Uncaught exception in Thread "AWT-EventQueue-0":
java.lang.NullPointerException: Cannot read the array length because "arr$" is null
at org.swingexplorer.ActDumpAdditionTrace.actionPerformed(ActDumpAdditionTrace.java:61) ~[swexpl.jar:1.6.0]
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972) ~[?:?]
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313) ~[?:?]
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405) ~[?:?]
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262) ~[?:?]
at javax.swing.AbstractButton.doClick(AbstractButton.java:374) ~[?:?]
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1028) ~[?:?]
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1072) ~[?:?]
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297) ~[?:?]
at java.awt.Component.processMouseEvent(Component.java:6626) ~[?:?]
at javax.swing.JComponent.processMouseEvent(JComponent.java:3389) ~[?:?]
at java.awt.Component.processEvent(Component.java:6391) ~[?:?]
at java.awt.Container.processEvent(Container.java:2266) ~[?:?]
at java.awt.Component.dispatchEventImpl(Component.java:5001) ~[?:?]
at java.awt.Container.dispatchEventImpl(Container.java:2324) ~[?:?]
at java.awt.Component.dispatchEvent(Component.java:4833) ~[?:?]
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948) ~[?:?]
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575) ~[?:?]
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516) ~[?:?]
at java.awt.Container.dispatchEventImpl(Container.java:2310) ~[?:?]
at java.awt.Window.dispatchEventImpl(Window.java:2780) ~[?:?]
at java.awt.Component.dispatchEvent(Component.java:4833) ~[?:?]
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773) ~[?:?]
at java.awt.EventQueue$4.run(EventQueue.java:722) ~[?:?]
at java.awt.EventQueue$4.run(EventQueue.java:716) ~[?:?]
at java.security.AccessController.doPrivileged(AccessController.java:399) ~[?:?]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) ~[?:?]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97) ~[?:?]
at java.awt.EventQueue$5.run(EventQueue.java:746) ~[?:?]
at java.awt.EventQueue$5.run(EventQueue.java:744) ~[?:?]
at java.security.AccessController.doPrivileged(AccessController.java:399) ~[?:?]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) ~[?:?]
at java.awt.EventQueue.dispatchEvent(EventQueue.java:743) ~[?:?]
at org.swingexplorer.edt_monitor.EDTDebugQueue.dispatchEvent(EDTDebugQueue.java:252) ~[swexpl.jar:1.6.0]
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]
java.lang.NullPointerException: Cannot read the array length because "arr$" is null
at org.swingexplorer.ActDumpAdditionTrace.actionPerformed(ActDumpAdditionTrace.java:61)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
at java.desktop/javax.swing.AbstractButton.doClick(AbstractButton.java:374)
at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1028)
at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1072)
at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6626)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3389)
at java.desktop/java.awt.Component.processEvent(Component.java:6391)
at java.desktop/java.awt.Container.processEvent(Container.java:2266)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5001)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:716)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:746)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:744)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:743)
at org.swingexplorer.edt_monitor.EDTDebugQueue.dispatchEvent(EDTDebugQueue.java:252)
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)
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
Profiler Agent: Waiting for connection on port 5140 (Protocol version: 20)
Profiler Agent: Established connection with the tool
Profiler Agent: Local accelerated session
Profiler Agent: Connection with agent closed
Thank you for your detailed report! I'll have a look at it, if I got some spare time - it seems, that the external, "real" Swing Explorer application seems to be a bit buggy on >JDK10 or so. So, we should decompile it and fix it there, if we do not have any sources for that. Or maybe a better approach: Upgrade to the "new" SwingExpl. version, so that this should be fixed automatically.. Both of those options seem to be a bit heavy, so.. please don't expect a quick fix in the near future 😅