Java Program to Swap Two Numbers

Here you will get java program to swap numbers using temporary variable.

It can be done in following way.

temp = a

a = b

b = temp

Also Read: Java Program to Swap Two Numbers Without Using Third Variable

import java.util.Scanner;

public class JavaSwapNumbers {
	public static void main(String args[]){
		int a, b, temp;
		Scanner sc = new Scanner(System.in);
		
		System.out.print("Enter first number: ");
		a = sc.nextInt();
		
		System.out.print("Enter second number: ");
		b = sc.nextInt();
		
		System.out.print("\nBefore swap:\na = " + a + "\nb = " + b);
		
		temp = a;
		a = b;
		b = temp;
		
		System.out.print("\n\nAfter swap:\na = " + a + "\nb = " + b);
	}
}

Output

Enter first number: 5
Enter second number: 8

Before swap:
a = 5
b = 8

After swap:
a = 8
b = 5