Reversing a Number

import java.io.DataInputStream;
class x3
{
public static void main(String[] args)
{
try
{
int num,len;
String ip;
DataInputStream in = new DataInputStream(System.in);
System.out.println("Enter a number: ");
ip=in.readLine();
len=ip.length();
num=Integer.parseInt(ip);
System.out.println("\nReversed number: ");
for(int i=0;i 'less than' len;i++) //use "<" instead of less than
{
System.out.print((num%10));
num=num/10;
}
}
catch(Exception e)
{}
}
}