FINDING REVERSE OF A NUMBER

import java.util.*;
class reverse

{
public static void main(string args[])
{
int n;
reverse(int x)
{
n=x;
}
int cal()
{
int cal()
{
int d, rev=0;
do
{
d=n%10;
rev=rev*10+d;
n=n/10;
}
while(n!=0);
return(rev);
}
}
class revtest
{
public static void main(string args[])
{
int num,r;
scanner os=new scanner(system.int);
system.out.println("enter any number");
num=os.next int();
reverse or=new reverse(num);
r=or.cal();
system.out.println("reverse number :"+r);
}
}