Hi Friend,

Try the following code:

import java.math.*;
import java.util.*;
class CheckSumIsPalindrome{
    public static void main(String[] args){
        Scanner input=new Scanner(System.in);
        System.out.print("Enter Number: ");
        BigInteger bi=input.nextBigInteger();
        int num = 0;
        String strSum = bi.toString();
        for(int i = 0;i < strSum.length(); i+=2){
        char ch=strSum.charAt(i);
        int n=Integer.parseInt(Character.toString(ch));
        num+=n;     
        }
        System.out.println("Sum of Alternate digits is: "+num);  
        int n = num;
        int reversedNumber=0;
        for (int i=0; i<=num; i++){
        int r=num%10;
        num=num/10;
        reversedNumber=reversedNumber*10+r;
        i=0;
   }
        if(n == reversedNumber){
        System.out.print("Number is palindrome!");
    }
        else{
        System.out.println("Number is not palindrome!");
        }
    }
}

Thanks