StackOverflow Error

Question

I am writing this program to check if the word which is entered by the user, is a Palindrome(the word reads the same when spelled backwards) or not. I am using recursion, as the task i was given stated so. Apparently my recursive call is correct, as the arguments are changing every time. Yet, i am getting the StackOverflow error. I can not identify the reason for the error. What is the problem?

import java.util.Scanner;

public class PalindromeChecker {

    static StringBuffer mainString, tempString, chString;
    static int j = 0;

    public static void main(String[] args){

        Scanner input = new Scanner(System.in);
        System.out.println("Please input the String:");
        mainString = new StringBuffer(input.nextLine());
        tempString = mainString;

        for(int n = 0; n < tempString.length(); n++){
            if(tempString.charAt(n) == ' '){
                tempString.deleteCharAt(n);
                n -= 1;
            }
        }
        chString = tempString;
        tempString.reverse();
        checker(j);

    }


    public static void checker(int k){

        if(k < tempString.length()){
            if(tempString.charAt(k) != chString.charAt(k)){
                System.out.println("Not a Palindrome");

            }
            else
                checker(j+1);
        }
        else
            System.out.println("Palindrome Confirmed!");

    } 

}

Answer 1

From what I see you never change your j. So checker is called every time with j = 1.

Edit : StackOverFlowError reason is often because you are stuck in a loop.