Write a Scala program to compare two strings lexicographically

object Scala_String {

  def test(str1: String, str2: String): String = {
    // Compare the two strings.
    val result = str1.compareTo(str2);

    // Display the results of the comparison.
    if (result < 0) {
      (""" + str1 + """ +
        " is less than " +
        """ + str2 + """);
    } else if (result == 0) {
      (""" + str1 + """ +
        " is equal to " +
        """ + str2 + """);
    } else {
      (""" + str1 + """ +
        " is greater than " +
        """ + str2 + """);
    }
  }

  def main(args: Array[String]): Unit = {
    var str1 = "This is Exercise 1";
    var str2 = "This is Exercise 2";

    println("String 1: " + str1);
    println("String 2: " + str2);

    var result = test(str1, str2)
    println(result)
    println("========================")
    str1 = "This is Exercise 1";
    str2 = "This is Exercise 1";

    println("String 1: " + str1);
    println("String 2: " + str2);

    result = test(str1, str2)
    println(result)
    println("========================")
    str1 = "This is Blacky";
    str2 = "This is Black";
    println("String 1: " + str1);
    println("String 2: " + str2);
    result = test(str1, str2)
    println(result)
  }
}