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I'm trying to write a jbuilder OpenTool (like an eclipse plugin) using my favorite Java IDE, but eclipse is having a hard time with jbuilder classes. A specific case follows, but almost any use of JBuilder classes seems to cause eclipse to fail with the same exception during e.g. code completion. The regular error dialogs and lack of code completion are bearable, but not being able to reopen my source code is a bit of a showstopper :-) Thanks Mark 1. Add jbuilder.jar to the classpath 2. Create a new class and paste in the following method (from the JBuilder help docs) public static void initOpenTool(byte major, byte minor) { // Check OpenTools version number if (major != PrimeTime.CURRENT_MAJOR_VERSION) return; // Add a new menu item to the Help menu JBuilderMenu.GROUP_Help.add(new BrowserAction( "Say Hello") { public void actionPerformed(Browser browser) { JOptionPane.showConfirmDialog(null, "Hello, World!"); } }); } 3. Organize imports, save and close 4. Try to reopen the file. Fails with java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.classfmt.ClassFileStruct.u2At (ClassFileStruct.java:147) at org.eclipse.jdt.internal.compiler.classfmt.FieldInfo.readConstantAttribute (FieldInfo.java:172) at org.eclipse.jdt.internal.compiler.classfmt.FieldInfo.getConstant (FieldInfo.java:56) at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.createFields (BinaryTypeBinding.java:151) at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.cachePartsFrom (BinaryTypeBinding.java:133) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.createBinaryTypeFrom (LookupEnvironment.java:292) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.createBinaryTypeFrom (LookupEnvironment.java:275) at org.eclipse.jdt.internal.compiler.Compiler.accept(Compiler.java:188) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType (LookupEnvironment.java:65) at org.eclipse.jdt.internal.compiler.lookup.UnresolvedReferenceBinding.resolve (UnresolvedReferenceBinding.java:23) at org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding.superclass (BinaryTypeBinding.java:403) at org.eclipse.jdt.internal.compiler.lookup.Scope.findMemberType (Scope.java:319) at org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage (Scope.java:996) at org.eclipse.jdt.internal.compiler.lookup.Scope.getType (Scope.java:911) at org.eclipse.jdt.internal.compiler.ast.SingleTypeReference.getTypeBinding (SingleTypeReference.java:34) at org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.resolveTypesFor (SourceTypeBinding.java:799) at org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.methods (SourceTypeBinding.java:663) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.buildMethods (ClassScope.java:218) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.buildFieldsAndMethods (ClassScope.java:114) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.buildAnonymousTypeBinding (ClassScope.java:32) at org.eclipse.jdt.internal.compiler.lookup.BlockScope.addAnonymousType (BlockScope.java:58) at org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.resolveType (QualifiedAllocationExpression.java:301) at org.eclipse.jdt.internal.compiler.ast.MessageSend.resolveType (MessageSend.java:195) at org.eclipse.jdt.internal.compiler.ast.Expression.resolve (Expression.java:419) at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolveStatement s(AbstractMethodDeclaration.java:322) at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.resolveStatements (MethodDeclaration.java:64) at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolve (AbstractMethodDeclaration.java:311) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve (TypeDeclaration.java:898) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve (TypeDeclaration.java:930) at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.resolve (CompilationUnitDeclaration.java:213) at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:561) at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.resolve (CompilationUnitProblemFinder.java:151) at org.eclipse.jdt.internal.core.CompilationUnit.buildStructure (CompilationUnit.java:81) at org.eclipse.jdt.internal.core.Openable.openWhenClosed (Openable.java:394) at org.eclipse.jdt.internal.core.WorkingCopy.openWhenClosed (WorkingCopy.java:332) at org.eclipse.jdt.internal.core.Openable.open(Openable.java:330) at org.eclipse.jdt.internal.core.WorkingCopy.open(WorkingCopy.java:294) at org.eclipse.jdt.internal.core.CompilationUnit.getWorkingCopy (CompilationUnit.java:619) at org.eclipse.jdt.internal.core.CompilationUnit.getSharedWorkingCopy (CompilationUnit.java:590) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider.createEle mentInfo(CompilationUnitDocumentProvider.java:421) at org.eclipse.ui.texteditor.AbstractDocumentProvider.connect (AbstractDocumentProvider.java:247) at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput (AbstractTextEditor.java:1503) at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.doSetInput (JavaEditor.java:486) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.doSetInput (CompilationUnitEditor.java:933) at org.eclipse.ui.texteditor.AbstractTextEditor.init (AbstractTextEditor.java:1146) at org.eclipse.ui.internal.EditorManager.createSite (EditorManager.java:485) at org.eclipse.ui.internal.EditorManager.access$1 (EditorManager.java:483) at org.eclipse.ui.internal.EditorManager$2.run(EditorManager.java:467) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:56) at org.eclipse.ui.internal.EditorManager.openInternalEditor (EditorManager.java:460) at org.eclipse.ui.internal.EditorManager.openInternalEditor (EditorManager.java:529) at org.eclipse.ui.internal.EditorManager.openEditor (EditorManager.java:361) at org.eclipse.ui.internal.EditorManager.openEditor (EditorManager.java:264) at org.eclipse.ui.internal.WorkbenchPage.openEditor (WorkbenchPage.java:1637) at org.eclipse.ui.internal.WorkbenchPage.openEditor (WorkbenchPage.java:1601) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor (EditorUtility.java:130) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor (EditorUtility.java:102) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor (EditorUtility.java:89) at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open (OpenActionUtil.java:45) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:141) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:132) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun (SelectionDispatchAction.java:132) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run (SelectionDispatchAction.java:94) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleDoubleC lick(PackageExplorerActionGroup.java:214) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.handleDoubleClick (PackageExplorerPart.java:500) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.access$1 (PackageExplorerPart.java:499) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.doubleClick (PackageExplorerPart.java:311) at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick (StructuredViewer.java:286) at org.eclipse.jface.viewers.StructuredViewer.handleDoubleSelect (StructuredViewer.java:444) at org.eclipse.jface.viewers.AbstractTreeViewer$1.widgetDefaultSelected (AbstractTreeViewer.java:627) at org.eclipse.swt.widgets.TypedListener.handleEvent (TypedListener.java:92) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:75) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:637) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1412) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1208) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:833) at org.eclipse.ui.internal.Workbench.run(Workbench.java:816) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:643) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:349) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.core.launcher.Main.basicRun(Main.java:160) at org.eclipse.core.launcher.Main.run(Main.java:548) at org.eclipse.core.launcher.Main.main(Main.java:403)
Where do I get the jbuilder.jar file? I think this is the first step to reproduce this problem. Is there a licence agreement to get it?
There is a license agreement so I can't really send it to you. However it is downloadable at no charge from http://www.borland.com/jbuilder/download/jb6personal_steps.html
I think this has something to do with the fully initialized instances of the ClassFileReader. I need the jbuilder.jar to reproduce the case and then it should be fairly simple to find out what the problem is.
I requested jbuilder.jar through the official software request form. Wait to get the jar file before further investigations.
Which build are you using?
Problem is definitely present in M5. I downloaded an integration build earlier today which was almost certainly 20020425 (I'm not at the office so I can't be 100% sure) and that still had the problem.
Looking only at the stack trace should allow me to narrow down the problem. I will investigate it before I got the jbuilder.jar file.
I got the jar file. I am investigating.
I found the bug. It is fixed now. The problem came from the reading of the field constant value. This was boggus for a field that contains another attribute before the constant value attribute. I will add some regression tests. Fixed and released in HEAD.
