class MainClass { public static void main(String[] args) { String s1 = "abc"; String s2 = "abc"; String s3 = "def"; System.out.println("s1 hash code = " + s1.hashCode()); System.out.println("s2 hash code = " + s2.hashCode()); System.out.println("s3 hash code = " + s3.hashCode()); } }