Полиндром

import java.util.Scanner;

class Main{
    static String input;
    public static void main(String [] args){
        Scanner reader = new Scanner(System.in);
        String str1 = "", str2 = "";
        System.out.print("Введите строку: ");
        input = reader.nextLine();
        char [] line = input.toCharArray();
        for (int i = 0; i < (line.length / 2); i++){
            str1.concat(Character.toString((line[i])));
        }
        for (int i = line.length - 1; i > ((line.length / 2)); i--){
            str2.concat(Character.toString((line[i])));
        }
        if (str1.equals(str2)){
            System.out.println("Полиндром!");
        }
        else {
            System.out.println("Не полиндром!");
        }
    }
}