ArrayIndexOutOfBoundsException on launch

[Former user]

When executing Tools->Sketch It! (generate UML diagrams) the plugin dies immediately with the following stack trace:

running with IntelliJ 2018.1.5 (community edition) sketch it! verion .03 (Jan 21, 2018)

-1 java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:418) at java.util.ArrayList.remove(ArrayList.java:495) at org.pmesmeur.sketchit.diagram.component.ModulesHierarchyGenerator.buildModulePaths(ModulesHierarchyGenerator.java:27) at org.pmesmeur.sketchit.diagram.component.ModulesHierarchyGenerator.<init>(ModulesHierarchyGenerator.java:17) at org.pmesmeur.sketchit.diagram.component.ComponentDiagramGenerator.generate(ComponentDiagramGenerator.java:104) at org.pmesmeur.sketchit.diagram.UmlComponentDiagram.generateDiagram(UmlComponentDiagram.java:33) at org.pmesmeur.sketchit.diagram.UmlDiagram.generateDiagram(UmlDiagram.java:43) at org.pmesmeur.sketchit.diagram.UmlDiagram.generate(UmlDiagram.java:24) at org.pmesmeur.sketchit.diagram.UmlDiagramsGenerator.generateComponentDiagram(UmlDiagramsGenerator.java:27) at org.pmesmeur.sketchit.SketchIt.actionBody(SketchIt.java:40) at org.pmesmeur.sketchit.SketchIt.access$000(SketchIt.java:8) at org.pmesmeur.sketchit.SketchIt$1.run(SketchIt.java:31) at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:1010) at org.pmesmeur.sketchit.SketchIt.runInsideAnIntellijWriteAction(SketchIt.java:29) at org.pmesmeur.sketchit.SketchIt.actionPerformed(SketchIt.java:23) at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:220) at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:237) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:301) at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:307) at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:104) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:291) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$0(ActionMenuItem.java:111) at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88) at com.intellij.openapi.application.TransactionGuardImpl.lambda$submitTransaction$1(TransactionGuardImpl.java:111) at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:120) at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:122) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:111) at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:528) at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:48) at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:548) at java.awt.Component.processMouseEvent(Component.java:6548) at javax.swing.JComponent.processMouseEvent(JComponent.java:3325) at java.awt.Component.processEvent(Component.java:6313) at java.awt.Container.processEvent(Container.java:2237) at java.awt.Component.dispatchEventImpl(Component.java:4903) at java.awt.Container.dispatchEventImpl(Container.java:2295) at java.awt.Component.dispatchEvent(Component.java:4725) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4889) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4526) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4467) at java.awt.Container.dispatchEventImpl(Container.java:2281) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4725) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764) at java.awt.EventQueue.access$500(EventQueue.java:98) at java.awt.EventQueue$3.run(EventQueue.java:715) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) at java.awt.EventQueue$4.run(EventQueue.java:737) at java.awt.EventQueue$4.run(EventQueue.java:735) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.awt.EventQueue.dispatchEvent(EventQueue.java:734) at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:786) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:723) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:395) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

[Philippe MESMEUR]

I looked at the code in the top of your stack:

org.pmesmeur.sketchit.diagram.component.ModulesHierarchyGenerator.buildModulePaths(ModulesHierarchyGenerator.java:27)

and it's true that there is potentially an index ArrayIndexOutOfBoundsException.

    private void buildModulePaths(Set<Module> managedModules) {
        for (Module module : managedModules) {
            modulePaths.add(new ModulePath(module));
        }
        Collections.sort(modulePaths, new ModulePathComparator());
        modulePaths.remove(modulePaths.size() - 1); /// remove last element, i.e. project-root

However, the only way I can imagine is that managedModules is empty in your case!!!

Do you confirm that your project has no modules?

[Philippe MESMEUR]

Issue #18 was marked as a duplicate of this issue.

[Xavier Rincón]

I have the same Issue.

[Philippe MESMEUR]

Hello Xavier,

did you see my comment above? According to my code, the only way to have such an exception with this stack is that your project as no module (to my knowledge a project always has a module).

Is it the case with yours?

How did you create your project?

Regards,

Philippe

[Xavier Rincón]

Thanks, I solved it.

[Philippe MESMEUR]

What do you exactly mean? Thank you to explain me what you had to do in order to solve the issue?

Regards,

Philippe

[Philippe MESMEUR]

Cf. Pull Request #16