@Override
  public String getEventMessage(LocatableEvent event) {
    final Location location = event.location();
    String sourceName;
    try {
      sourceName = location.sourceName();
    } catch (AbsentInformationException e) {
      sourceName = getFileName();
    }

    final boolean printFullTrace = Registry.is("debugger.breakpoint.message.full.trace");

    StringBuilder builder = new StringBuilder();
    if (printFullTrace) {
      builder.append(
          DebuggerBundle.message(
              "status.line.breakpoint.reached.full.trace",
              DebuggerUtilsEx.getLocationMethodQName(location)));
      try {
        final List<StackFrame> frames = event.thread().frames();
        renderTrace(frames, builder);
      } catch (IncompatibleThreadStateException e) {
        builder.append("Stacktrace not available: ").append(e.getMessage());
      }
    } else {
      builder.append(
          DebuggerBundle.message(
              "status.line.breakpoint.reached",
              DebuggerUtilsEx.getLocationMethodQName(location),
              sourceName,
              getLineIndex() + 1));
    }
    return builder.toString();
  }
 /** if this line can not be current => stepOver & return true. return false on the other hand. */
 boolean resolveCanBeCurrent(ThreadReference tr) {
   try {
     Location l = tr.frame(0).location();
     if (l == null) return false;
     return resolveCanBeCurrent(
         tr, Utils.getLineForSource(l.declaringType().name(), l.sourceName(), l.lineNumber()));
   } catch (Exception e) {
   }
   return false;
 }
  /** Executes breakpoint hit event. */
  public void exec(com.sun.jdi.event.Event ev) {
    // S ystem.out.println ("exec "); // NOI18N
    removeStepRequest();
    StepEvent event = (StepEvent) ev;
    ThreadReference tr = event.thread();
    Location loc = event.location();
    int ln = -1;
    String methodName = "?"; // NOI18N
    String className = "?"; // NOI18N
    String lineNumber = "?"; // NOI18N
    String threadName = tr.name();
    Line l = null;

    if (loc != null) {
      if (loc.method() != null) methodName = loc.method().name();
      className = loc.declaringType().name();
      ln = loc.lineNumber();
      if (ln >= 0) lineNumber = "" + loc.lineNumber();
    }

    if (ln != -1)
      try {
        l = Utils.getLineForSource(className, loc.sourceName(), ln);
      } catch (AbsentInformationException e) {
        l = Utils.getLine(className, ln);
      }

    if (resolveCanBeCurrent(tr, l))
      // if this line can not be current resolveCanBeCurrent () calls stepOver
      return;
    // line can be current

    if ((l == null) && (getLastAction() == ACTION_TRACE_INTO))
      // try to find another "intelligent" line of code
      traceToSourceCode(tr);
    // you know - intelligent means that one with source code
    else {
      makeCurrent(threadName, className, methodName, lineNumber, l != null, tr);
      operator.stopRequest();
    }
  }