code: protected final void setLevel(int traceLevel) {
  
          switch (traceLevel) {
              case Trace.Level_All:
                  debugEnabled = true;
                  eventEnabled = true;
                  entryEnabled = true;
                  break;
  
              case Trace.Level_Entry:
                  debugEnabled = false;
                  eventEnabled = false;
                  entryEnabled = true;
                  break;
  
              case Trace.Level_Debug:
                  debugEnabled = true;
                  eventEnabled = false;
                  entryEnabled = false;
                  break;
  
              case Trace.Level_Event:
                  debugEnabled = false;
                  eventEnabled = true;
                  entryEnabled = false;
                  break;
  
              case Trace.Level_None:
                  debugEnabled = false;
                  eventEnabled = false;
                  entryEnabled = false;
                  break;
  
              default:
          } // switch (traceLevel).
  
      }
docs: Enable tracing of this component.
  
  @param traceLevel levels to be turned on.