Write a Java program to swap two variable

public class Exercise15 {
 
 public static void main(String[] args) {
     
   int a, b, temp;
   a = 15;
   b = 27;
   System.out.println("Before swapping : a, b = "+a+", "+ + b);
   temp = a;
   a = b;
   b = temp;   
  System.out.println("After swapping : a, b = "+a+", "+ + b);
 }
 }

anther way to solve:

public class Exercise15 {
  public static void main(String[] args) {
     // int, double, float
   int a, b;
   a = 15;
   b = 27;
   System.out.println("Before swapping : a, b = "+a+", "+ + b);
   a = a + b;
   b = a - b;
   a = a - b;
   System.out.println("After swapping : a, b = "+a+", "+ + b);
 }
 
}

Sample Output:

Before swapping : a, b = 15, 27                                                                               
After swapping : a, b = 27, 15