Check Palindrome

class Main {
    public static void main(String[] args) {
        System.out.println(checkPalindrome("madam"));
        System.out.println(checkPalindrome("madama"));
    }
    public static boolean checkPalindrome(String s){
        int a = 0;
        int b = s.length()-1;
        boolean res = true;
        while(a<b){
            if(s.charAt(a) != s.charAt(b)){
                res = false;
                break;
            }
            a++;
            b--;
        }
        return res;
    }
}