public class Main {

  public static void main(String[] args) {

    String result;

​

    // Represent characters from their unicode code points

    result = String.format("%c%c%c%c%c", 72, 101, 108, 108, 111);

    System.out.println(result);

​

    // Force unicode characters to uppercase

    result = String.format("%C%C%C%C%C", 72, 101, 108, 108, 111);

    System.out.println(result);

  }

}

​