How do you swap two variables in JAVA without using a third one bu using bitwise operator ?

Answer:

/*Program to swap 2 values without using the temporary variable and Arithmetic operators*/

class Swap
{
public static void main(String args[])
{
int a=1;
int b=2;
System.out.println("Before swap: a="+a+"b="+b);
a=a^b;
b=a^b;
a=a^b;
System.out.println(" After swap: a="+a+"b="+b);
}
}

Another Method

class Swap
{

• 
  public static void Swap()
• 
  {
• 
  int num1 = 10;
• 
  int num2 = 20;
• 
  System.out.println("Before Swapping");
• 
  System.out.println("Value of num1 is :" + num1);
• 
  System.out.println("Value of num2 is :" +num2);
• 
  //add both the numbers and assign it to first
• 
  num1 = num1 + num2;
• 
  num2 = num1 - num2;
• 
  num1 = num1 - num2;
• 
  System.out.println("Before Swapping");
• 
  System.out.println("Value of num1 is :" + num1);
• 
  System.out.println("Value of num2 is :" +num2);
• }
• }
•