Java Program to Swap Two Numbers

Swapping two numbers is a common and simple programming exercise, especially for beginners learning Java. It helps you understand how variables work and how logic is built inside a program. In this blog, we will learn two ways to swap numbers:

• Using a temporary (third) variable
• Without using a third variable

Java Program to Swap Two Numbers Using Third Variable

public class SwapNumbers {
public static void main(String[] args) {
int a = 10;
int b = 20;

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

System.out.println(“After swapping:”);
System.out.println(“a = ” + a);
System.out.println(“b = ” + b);
}
}

Output:

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