//
// what's the difference between == and equals?
//

public class Equals {

    public static void main(String[] args){

	String s0 = args[0];
	String s1 = args[1];
	String s2 = s0;
	System.out.println(s0 +" "+ s1 +" "+ s2);
	System.out.println("s0 == s1: "+ (s0 == s1));
	System.out.println("s0 == s2: "+ (s0 == s2));
	System.out.println("s1 == s2: "+ (s1 == s2));
	System.out.println("--------------------");
	System.out.println("s0.equals(s1): "+ s0.equals(s1));
	System.out.println("s0.equals(s2): "+ s0.equals(s2));
	System.out.println("s1.equals(s2): "+ s1.equals(s2));
	System.out.println("++++++++++++++++++++");
	s0 = s0 + "X";
	System.out.println(s0 +" "+ s1 +" "+ s2);
	System.out.println("s0 == s1: "+ (s0 == s1));
	System.out.println("s0 == s2: "+ (s0 == s2));
	System.out.println("s1 == s2: "+ (s1 == s2));
	System.out.println("--------------------");
	System.out.println("s0.equals(s1): "+ s0.equals(s1));
	System.out.println("s0.equals(s2): "+ s0.equals(s2));
	System.out.println("s1.equals(s2): "+ s1.equals(s2));
    }
}