import java.util.Scanner;

public class Practise03 {

    public static void main(String[] args) {

        //键盘录入一个字符串,用方法进行反转

        System.out.println("请输入一个字符串:");

        Scanner sc = new Scanner(System.in);

        String str = sc.next();

        System.out.println("反转后的字符是:"+reverse(str));

    }

    public static String reverse(String str){

        //经典反转四步骤

        StringBuilder sb = new StringBuilder();

        sb.append(str);

        sb.reverse();

        return sb.toString();

    }

}