public CharacterMatch(char[] chars){
  Assert.isNotNull(chars);
  Assert.isTrue(chars.length > 0);
  fChars=chars;
  Arrays.sort(chars);
}

public CharacterMatch ( char [ ] chars ) { Assert . isNotNull ( chars ) ; Assert . isTrue ( chars . length > 0 ) ; fChars = chars ; Arrays . sort ( chars ) ; }
creates a new instance .
