write a java program to find whether a given string is palindrome or not

import java.io.*;

public class a

{

public static void main(String args[])throws Exception

{

String s,s2="";

int i;

DataInputStream dd=new DataInputStream(System.in);

System.out.println("Enter a string");

s=dd.readLine();

s=s.trim();

for(i=0;i<s.length();i++)

s2=s.charAt(i)+s2;

if(s.equals(s2))

System.out.println("It is  a palindrome");

elseaba

System.out.println("Not a palindrome");

}

}