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Java program to swap two integers
Read integers from users using the nextInt() method of the Scanner class.
To swap them −
- Create a variable (temp), initialize it with 0.
- Assign 1st number to temp.
- Assign 2nd number to 1st number.
- Assign temp to second number.
Example
import java.util.Scanner;
public class SwapTwoNumbers {
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
System.out.println("Enter first number :: ");
int num1 = sc.nextInt();
System.out.println("Enter second number :: ");
int num2 = sc.nextInt();
int temp = 0;
temp = num1;
num1 = num2;
num2 = temp;
System.out.println("After swapping ::");
System.out.println("Value of first number ::"+ num1);
System.out.println("Value of first number ::"+ num2);
}
}Output
Enter first number :: 22 Enter second number :: 33 After swapping :: Value of first number ::33 Value of first number ::22
Updated on: 13-Mar-2020
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