Method string2

strings/UsingStringBuilder.java:20–26

()

    return result.toString();
  }
  public static String string2() {
    String result = new Random(47)
      .ints(25, 0, 100)
      .mapToObj(Integer::toString)
      .collect(Collectors.joining(", "));
    return "[" + result + "]";
  }
  public static void main(String[] args) {
    System.out.println(string1());
    System.out.println(string2());