import java.util.Scanner;

class StringExample
{
    public static void main ( String [] args )
    {
        Scanner keyboard = new Scanner(System.in);
        int x1, x2;
        String s1, s2;
        boolean isEqual;
        
        // Read and compare two integers
        System.out.println("Enter integer x1: ");
        x1 = keyboard.nextInt();

        System.out.println("Enter integer x2: ");
        x2 = keyboard.nextInt();
        
        // use standard == operator for comparison
        isEqual = ( x1 == x2);
        System.out.println("Does " + x1 + " = " + x2 + "? " + isEqual); 
        
        // INCORRECTLY use == operator for strings
        s1 = "hello";
        s2 = s1;

        isEqual = ( s1 == s2);
        System.out.println("(using ==) Does \"" + s1 + "\" = \"" + s2 + "\"? " + isEqual); 
        
        isEqual = ( s1.equals(s2));
        System.out.println("(using equals) Does \"" + s1 + "\" = \"" + s2 + "\"? " + isEqual); 
        
        // Now read in two strings and compare
        System.out.println("Enter string s1: ");
        s1 = keyboard.next();

        System.out.println("Enter string s2: ");
        s2 = keyboard.next();
        
        isEqual = ( s1 == s2);
        System.out.println("(using ==) Does \"" + s1 + "\" = \"" + s2 + "\"? " + isEqual); 
        
        isEqual = ( s1.equals(s2));
        System.out.println("(using equals) Does \"" + s1 + "\" = \"" + s2 + "\"? " + isEqual); 
    }
}