import java.util.Scanner;

public class SwapTwoNumbers {

public static void main(String[] args) {

// -----------------------Method 1------------------------

Scanner scanner=new Scanner(System.in);

System.out.println("----------Before Swapping--------------");

System.out.print("Enter First Number: ");

double num1=scanner.nextDouble();

System.out.print("Enter Second Number: ");

double num2=scanner.nextDouble();

scanner.close();

double temp;

temp=num1;

num1=num2;

num2=temp;

System.out.println("----------After Swapping--------------");

System.out.println("First Number = "+num1);

System.out.println("Second Number = "+num2);

/* Scanner scanner=new Scanner(System.in);

System.out.println("----------Before Swapping--------------");

System.out.print("Enter First Number: ");

double num1=scanner.nextDouble();

System.out.print("Enter Second Number: ");

double num2=scanner.nextDouble();

scanner.close();

num1=num1-num2;

num2=num1+num2;

num1=num2-num1;

System.out.println("----------After Swapping--------------");

System.out.println("First Number = "+num1);

System.out.println("Second Number = "+num2);

*/

}

}