WAP in Java to swap two given number

import java.util.*;
class swapp
{
    public static void main(String args[])
    {
        int a,b,t;
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter a and b");
        a=sc.nextInt();
        b=sc.nextInt();
        System.out.println("Before swapping");
        System.out.println(a+" "+b);
        t=a;
        a=b;
        b=t;
        System.out.println("After swapping");
        System.out.print(a+" "+b);
    }
}

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