Java Code to Exchanging the values of four variables

Problem:

Exchange the values of four variables as follows:
1. Exchange the value of b to a
2. Exchange the value of c to b
3. Exchange the value of d to c
4. Exchange the value of a to d.

Algorithm:
1. Get the values of a,b,c and d.
2. Assign the value of a to temporary variable.
3. Assign the value of b to a.
4. Assign the value of c to b.
5. Assign the value of d to c.
6. Assign the value of temporary variable to d.

Solution:
public class ExchangeFourValuesInReverseOrder {
     static int a,b,c,d,t;
     public static void main(String[] args) {
          getTheValues();
          System.out.println("Before exchange the values are " + a + " " + b + " " + c + " " + d);
          exchangeValues();
          System.out.println("After exchange the values are " + a + " " + b + " " + c + " " + d);
     }
     private static void getTheValues(){
          Scanner s = new Scanner(System.in);
          System.out.println("Enter the value of a: ");
          a = s.nextInt();
         System.out.println("Enter the value of b: ");
         b = s.nextInt();
         System.out.println("Enter the value of c: ");
         c = s.nextInt();
        System.out.println("Enter the value of d: ");
        d = s.nextInt();
   }
   private static void exchangeValues(){
       t = a;
       a = b;
       b = c;
      c = d;
      d = t;
   }
}

output:
Enter the value of a:
3
Enter the value of b:
30
Enter the value of c:
300
Enter the value of d:
3000
Before exchange the values are 3 30 300 3000
After exchange the values are 30 300 3000 3