Check string for palindrome

Question

A palindrome is a word, phrase, number or other sequence of units that can be read the same way in either direction.

To check whether a word is a palindrome I get th

Answer 1

public boolean isPalindrome(String abc){
    if(abc != null && abc.length() > 0){
        char[] arr = abc.toCharArray();
        for (int i = 0; i < arr.length/2; i++) {
            if(arr[i] != arr[arr.length - 1 - i]){
                return false;
            }
        }
        return true;
    }
    return false;
}