java编程,通过终端实现一个用户密码验证

package Mimayanzheng;import java.util.Scanner;//java编程,通过终端实现一个用户密码验证public class Mimayanzheng {    private static Scanner input;    public static void main(String[] args){        String usr,pwd;        System.out.println("请输入你的username:");        input = new Scanner(System.in);        usr = input.next();        if("xiaohua".equals(usr)){            System.out.println("请输入你的password:");            pwd = input.next();            if("xiaohei".equals(pwd)){                System.out.println("welcome xiaohua!!");            }else{                System.out.println("goodbye!");            }        }    }}