com.sun.jdi.InvalidStackFrameException: Thread has been resumed
        at com.sun.tools.jdi.StackFrameImpl.validateStackFrame(StackFrameImpl.java:62)
        at com.sun.tools.jdi.StackFrameImpl.visibleVariableByName(StackFrameImpl.java:177)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitIdentifier(EvaluatorVisitor.java:1556)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitIdentifier(EvaluatorVisitor.java:178)
        at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1689)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:49)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:214)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:178)
        at org.netbeans.modules.debugger.jpda.projects.EditorContextImpl.parseExpression(EditorContextImpl.java:1528)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.netbeans.modules.debugger.jpda.EditorContextBridge.parseExpression(EditorContextBridge.java:126)
        at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:152)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:847)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:719)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:684)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:322)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:310)
        at org.netbeans.modules.debugger.jpda.projects.ToolTipAnnotation.run(ToolTipAnnotation.java:169)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)