// System.out.println(s1.compareTo(s2));
// System.out.println(s2.compareTo(s1));
s1.compareTo(s2);
}
assertTrue("s1 should be greater than s2", s1.compareTo(s2) > 0);
assertTrue("s2 should be less than s1", s2.compareTo(s1) < 0);
// assertTrue("s1 should be equal to s1",s1.compareTo(s1)==0);
// assertTrue("s2 should be equal to s2",s1.compareTo(s1)==0);
assertTrue(s1.compareTo(s3) == 0);
assertTrue(s3.compareTo(s1) == 0);