Method isLetter

classpath/java/lang/Character.java:121–123

(int c)

  }

  public static boolean isLetter(int c) {
    return canCastToChar(c) && isLetter((char) c);
  }

  public static boolean isLetter(char c) {
    return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');