Request Validations

getTest1( String tNo, String tn, String state) //all three required as input

getTest2(String tn, String State) // both data values required
for both of these input needs to be validated to see if it is null and is in the right format ..

I have this fn to test this
public void validateReq(String qualTrackNo, String tn, String state) throws ServicesApplicationException
{
      String fctStr = "ServiceRequestBean::checkReq()";
      
      PatternMatcher re = new Perl5Matcher();

      if (!reInit)
            setupRePatterns();
      
      try
      {
         // EDIT THE TELEPHONE NUMBER
         if ( (tn == null) || (!re.matches(tn, reTn)) )
            throw exception;...                                                                        
         // EDIT THE QUALIFICATION TRACKING NUMBER
         if ( TrackNo == null ||
           (!re.matches(TrackNo, reQualTrackNum)) )
            throw exception...                                                                              
            // EDIT THE STATE
       if ( state == null ||       (!re.matches(state, reState)) )
            throw exception...                                                
      
}
private synchronized void setupRePatterns() throws ServicesApplicationException
{
   try
   {
         TraceLog.write(TraceLog.DEBUG, "Initializing regular patterns...");
      
         if (reInit)
            return;
         reTn = new Perl5Compiler().compile(props.getValue(ServicesConstants.REGEXP_TN_10DIGIT), Perl5Compiler.READ_ONLY_MASK);
         reQualTrackNum = new Perl5Compiler().compile(props.getValue(ServicesConstants.REGEXP_QUAL_TRACK_NO), Perl5Compiler.READ_ONLY_MASK);
         reState = new Perl5Compiler().compile(props.getValue(ServicesConstants.REGEXP_STATE_2CHAR), Perl5Compiler.READ_ONLY_MASK);

         reInit = true;
         return;
   }
        
   catch(Throwable t)
   {
         ServicesError.throwProcessingException(t, "ServiceRequestBean::setupRePatterns()", props);
   }

   return;
}

How do I retain the same fns and test for both getTest1 and getTest2? other than polymorphism?