public CActionDifferenceTraces(final JFrame parent,final ITraceListProvider traceProvider,final TraceList trace1,final TraceList trace2){
  super(String.format("%s - %s",trace1.getName(),trace2.getName()));
  m_parent=parent;
  m_traceProvider=traceProvider;
  m_trace1=trace1;
  m_trace2=trace2;
}

public CActionDifferenceTraces ( final JFrame parent , final ITraceListProvider traceProvider , final TraceList trace1 , final TraceList trace2 ) { super ( String . format ( "%s - %s" , trace1 . getName ( ) , trace2 . getName ( ) ) ) ; m_parent = parent ; m_traceProvider = traceProvider ; m_trace1 = trace1 ; m_trace2 = trace2 ; }
creates a new action object .
