com.sun.jdi.InvocationException: Exception occurred in target VM
   at com.sun.tools.jdi.ClassTypeImpl.invokeMethod(ClassTypeImpl.java:246)
   at org.netbeans.modules.debugger.jpda.jdi.ClassTypeWrapper.invokeMethod(ClassTypeWrapper.java:280)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.initDebuggerRemoteService(VisualDebuggerListener.java:298)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.access$100(VisualDebuggerListener.java:122)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener$2.breakpointReached(VisualDebuggerListener.java:185)
   at org.netbeans.api.debugger.jpda.JPDABreakpoint.fireJPDABreakpointChange(JPDABreakpoint.java:293)
   at org.netbeans.api.debugger.jpda.JPDADebugger.fireBreakpointEvent(JPDADebugger.java:481)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.fireBreakpointEvent(JPDADebuggerImpl.java:604)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.perform(BreakpointImpl.java:470)
   at org.netbeans.modules.debugger.jpda.breakpoints.MethodBreakpointImpl.exec(MethodBreakpointImpl.java:232)
   at org.netbeans.modules.debugger.jpda.util.Operator.processEvents(Operator.java:487)
   at org.netbeans.modules.debugger.jpda.util.Operator.access$800(Operator.java:116)
   at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:244)
   at java.lang.Thread.run(Thread.java:722)