How to Swap Variables in Java: Complete Guide

There are two ways to achieve the exchange of values between two variables: using a third variable or through mathematical operations. Below are examples of both methods.

Option 1:
Method 1: Swap values using a third variable.

int a = 5;
int b = 10;
int temp;

System.out.println("Before swapping: a = " + a + ", b = " + b);

temp = a;
a = b;
b = temp;

System.out.println("After swapping: a = " + a + ", b = " + b);

Option:
Method 2: Exchange values through mathematical operations.

int a = 5;
int b = 10;

System.out.println("Before swapping: a = " + a + ", b = " + b);

a = a + b;
b = a - b;
a = a - b;

System.out.println("After swapping: a = " + a + ", b = " + b);

You can choose either of the above two methods to swap the values of two variables according to your preference.