[NETBEANS-2559] NullPointerException in debug mode.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 11.2
• Fix Version/s: 12.0
• Component/s: debugger - Java, java - Project, javafx - Project
• Labels: Debug NullPointerException javafx pull-request-available

Environment

Windows 10, Java 13.0.2

• Assignee: Unassigned
• Reporter: Michal Rama
• Created: 19/May/19 12:11
• Updated: 05/Feb/21 21:50
• Resolved: 02/Jan/21 20:33

Description

Hello,

When I start the project, everything will go well.

The problem occurs when I run debug mode. It goes through all the "Line Breakpoints". After the last, the project starts, but it also displays an error.

java.lang.NullPointerExceptionjava.lang.NullPointerException at org.netbeans.modules.debugger.jpda.jdi.ReferenceTypeWrapper.fieldByName(ReferenceTypeWrapper.java:1033)[catch] at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.setFxDebug(VisualDebuggerListener.java:463) at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.initDebuggerRemoteService(VisualDebuggerListener.java:273) at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener.access$100(VisualDebuggerListener.java:94) at org.netbeans.modules.debugger.jpda.visual.VisualDebuggerListener$3.breakpointReached(VisualDebuggerListener.java:184) at org.netbeans.api.debugger.jpda.JPDABreakpoint.fireJPDABreakpointChange(JPDABreakpoint.java:275) at org.netbeans.api.debugger.jpda.JPDADebugger.fireBreakpointEvent(JPDADebugger.java:466) at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.fireBreakpointEvent(JPDADebuggerImpl.java:641) at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.perform(BreakpointImpl.java:535) at org.netbeans.modules.debugger.jpda.breakpoints.MethodBreakpointImpl.exec(MethodBreakpointImpl.java:253) at org.netbeans.modules.debugger.jpda.util.Operator.processEvents(Operator.java:500) at org.netbeans.modules.debugger.jpda.util.Operator.access$800(Operator.java:94) at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:225) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278) at org.netbeans.modules.debugger.jpda.util.Operator$2.run(Operator.java:257) at java.base/java.lang.Thread.run(Thread.java:830)

Why is he doing it?

Please help

Thank you

Issue Links

• links to: GitHub Pull Request #2003