Palindrome program: Given String is Palindrome or not in java

import java.util.Scanner;

public class TestPolin {

  public static void main(String args[])
  {
     String reverseString="";
     Scanner scanner = new Scanner(System.in);

     System.out.println("Enter a string to check if it is a palindrome:");
     String inputString = scanner.nextLine();

     int length = inputString.length();

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

     if (inputString.equals(reverseString))
        System.out.println("Input string is a palindrome.");
     else
        System.out.println("Input string is not a palindrome.");

  }
}