public static boolean isLetter(char c){
  return Character.isLetter(c);
}

public static boolean isLetter ( char c ) { return Character . isLetter ( c ) ; }
returns true if character c is an english letter ( a . . z , a . . z ) . note : need i18n version to support european characters . this could be tricky due to different character sets and orderings for various languages and platforms .
