It is work but when I typed 1245324, It says it is Palindrome. How to fix?

import java.util.Stack;

import java.util.Scanner;

import java.util.Queue;

import java.util.LinkedList;

public class Palindrome {

// This is a main method to test checkPalindrome method

public static void main(String[] args) {

String inputString;

Scanner in = new Scanner(System.in);

do {

// please put your code to test checkPalindrome method here

System.out.println("please enter any string ");

inputString=in.nextLine();

int res=checkPalindrome(inputString);

if(res==0){

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

}

else{

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

}

System.out.println("do you want to continue(y/n)");

inputString=in.nextLine().toLowerCase();

} while (inputString.equals("y") && inputString.length() == 1 );

System.out.print("Bye!");

}

// This is checkPalindrome method. It checks if an input string is Palindrome or not.

// It returns 0 if a string is a Palindrome. Otherwise, it returns a position of a character where it finds

// a different value.

// Pre-Condition: string must not be null.

// Post-Condition: Return 0 if input string is a Palindrome. Return a positive number indicate the location where

// a difference found.

public static int checkPalindrome(String strValue) {

Stack stack = new Stack();

Queue queue = new LinkedList();

int indexVal=-1;

// check if string is null. If it is null, return a -1

if(strValue!=null && strValue!=""){

// normalize the string values to lower case, remove spaces

strValue = strValue.toLowerCase().replaceAll("\\W", "");

for(int i=0;i

stack.push(strValue.charAt(i));

queue.add(strValue.charAt(i));

}

while(!stack.isEmpty()){

String c=queue.remove().toString();

String d=stack.pop().toString();

if(!d.equals(c)){ //checks if each and every character is equal

indexVal=strValue.indexOf(c);

break;

}

else{

indexVal=0;

}

}

}

else{

indexVal=-1;;

}

// store data on stack/queue adts first

// loop: comparing, retrieving text, terminate loop if stack is emptied or found a difference

return indexVal;

}

} ----------------------------------------------------------- ** Unit test cases for checking the Palindrome method **/

import org.junit.Assert; import static org.junit.Assert.*; import org.junit.Before; import org.junit.Test;

public class PalindromeTest {

/** Fixture initialization (common initialization * for all tests). **/ String testStr = new String(""); @Before public void setUp() { testStr = "";

}

/** Step on no pets test. **/ @Test public void defaultTest() { testStr = "Step on no pets"; int check = Palindrome.checkPalindrome(testStr); assertEquals(0, check); }

/** null test. **/ @Test public void nullTest() { testStr = null; int check = Palindrome.checkPalindrome(testStr); assertEquals(-1, check); }

/** BelphegorPrime number test. **/ @Test public void BelphegorPrimeTest() { testStr = "1000000000000066600000000000001"; int check = Palindrome.checkPalindrome(testStr); assertEquals(0, check); }

/** fail lonely tylenol test. **/ @Test public void failTest() { testStr = "Lonely Tvlenol"; int check = Palindrome.checkPalindrome(testStr); assertEquals(6, check); } }