Swapping of two numbers in Java

class SwapExample {

    public static void main(String[] args) {

        int a = 3;
        int b = 6;

        System.out.println("The value of a before swap is " + a);
        System.out.println("The value of b before swap is " + b);

        // Swapping of two numbers using temp variable
        int temp = a;
        a = b;
        b = temp;

        System.out.println("The value of a after swap is " + a);
        System.out.println("The value of b after swap is " + b);
    }
}

class SwapExample {

    public static void main(String[] args) {

        int a = 3;
        int b = 6;

        System.out.println("The value of a before swap is " + a);
        System.out.println("The value of b before swap is " + b);

        // Swapping of two numbers using arithmetic operations
        a = a + b;
        b = a - b;
        a = a - b;

        System.out.println("The value of a after swap is " + a);
        System.out.println("The value of b after swap is " + b);
    }
}

class SwapExample {

    public static void main(String[] args) {

        int a = 3;
        int b = 6;

        System.out.println("The value of a before swap is " + a);
        System.out.println("The value of b before swap is " + b);

        // Swapping of two numbers using arithmetic operations
        b = a + b - (a = b);

        System.out.println("The value of a after swap is " + a);
        System.out.println("The value of b after swap is " + b);
    }
}

class SwapExample {

    public static void main(String[] args) {

        int a = 3;
        int b = 6;

        System.out.println("The value of a before swap is " + a);
        System.out.println("The value of b before swap is " + b);

        // Swapping of two numbers 
        // using exclusive OR operation (i.e. XOR)
        a = a ^ b;
        b = a ^ b;
        a = a ^ b;

        System.out.println("The value of a after swap is " + a);
        System.out.println("The value of b after swap is " + b);
    }
}