Check Palindrome in Java

class CheckPalindrome {
    public static void main(String[] args) {

        int originalNumber = 12321;

        int reverseNumber = 0;
        int temp = originalNumber;

        while (temp > 0) {
            int remainder = temp % 10;
            reverseNumber = (reverseNumber * 10) + remainder;
            temp = temp / 10;
        }

        if (originalNumber == reverseNumber) {
            System.out.println("The given number is Palindrome");
        } else {
            System.out.println("The given number is NOT a Palindrome");
        }
    }
}

class CheckPalindrome {
    public static void main(String[] args) {

        String originalString = "Madam";
        String reverseString = "";

        int length = originalString.length();

        for(int i = length - 1; i >= 0; i --) {
            reverseString = reverseString + originalString.charAt(i);
        }

        // Case in-sensitive comparision
        if (originalString.equalsIgnoreCase(reverseString)) {
            System.out.println("The given string is Palindrome");
        } else {
            System.out.println("The given string is NOT a Palindrome");
        }
    }
}