private static String typesString(Class[] types){
  StringBuffer sb=new StringBuffer();
  sb.append('(');
  for (int i=0; i < types.length; i++) {
    if (i != 0) {
      sb.append(", ");
    }
    sb.append(Utilities.typeString(types[i]));
  }
  sb.append(')');
  return sb.toString();
}

private static String typesString ( Class [ ] types ) { StringBuffer sb = new StringBuffer ( ) ; sb . append ( '(' ) ; for ( int i = 0 ; i < types . length ; i ++ ) { if ( i != 0 ) { sb . append ( ", " ) ; } sb . append ( Utilities . typeString ( types [ i ] ) ) ; } sb . append ( ')' ) ; return sb . toString ( ) ; }
returns a string describing the types in an argument list .
