palindrome of String in java

public class PalindromeOfString {

    public void reverseOfString(String string) {

        String reverseString = "";

        int lenth = string.length();

        for (int i = lenth - 1; i >= 0; i--) {

            reverseString = reverseString + string.charAt(i);

        }
        if (reverseString.equals(string)) {

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

        }

        else {

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

        }


    }

    public static  void main(String args[]){

        PalindromeOfString r = new PalindromeOfString();

        r.reverseOfString("tat");

    }
}