com.sun.jdi.InvocationException: Exception occurred in target VM
   at com.sun.tools.jdi.ObjectReferenceImpl.invokeMethod(ObjectReferenceImpl.java:392)
   at org.netbeans.modules.debugger.jpda.visual.RemoteServices.uploadBasicClasses(RemoteServices.java:128)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.initDebuggerRemoteService(VisualDebuggerListener.java:107)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.access$000(VisualDebuggerListener.java:77)
   at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener$1.breakpointReached(VisualDebuggerListener.java:95)
   at org.netbeans.api.debugger.jpda.JPDABreakpoint.fireJPDABreakpointChange(JPDABreakpoint.java:280)
   at org.netbeans.api.debugger.jpda.JPDADebugger.fireBreakpointEvent(JPDADebugger.java:458)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.fireBreakpointEvent(JPDADebuggerImpl.java:591)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.perform(BreakpointImpl.java:461)
   at org.netbeans.modules.debugger.jpda.breakpoints.MethodBreakpointImpl.exec(MethodBreakpointImpl.java:229)
   at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:430)
   at java.lang.Thread.run(Thread.java:680)