Java Program for given Integer value in to reverse

public class ReverseNo{
public static void main(String [] args){
int n=894, sum=0, m;
while(n>0){
m=n%10;                 //Here Reminder - 4
sum=sum*10+4;      //Here sum - 4
n=n/10;                    //quotient - 89
//System.out.println(sum);   //after failing loop we will get the values 4 ,49 , 498
}
System.out.println(sum);
}
}