# Java: Example - Palindrome test

    //========================================================= isPalindrome
    //  This method returns 'true' if the parameter
    //  is a palindrome, a word that is spelled the
    //  same both forwards and backwards, eg, radar.

    public static boolean isPalindrome(String word) {
        int left  = 0;                 // index of leftmost unchecked char
        int right = word.length() -1;  // index of the rightmost

        while (left < right) {         // continue until they reach center
            if (word.charAt(left) != word.charAt(right)) {
                return false;          // if chars are different, finished
            }
            left++;                    // move left index toward the center
            right--;                   // move right index toward the center
        }

        return true;                   // if finished, all chars were same
    }

This method uses two indexes that point to the left and right ends of the string. You could also write this with a `for` loop that goes only to the middle.