pswverify.java

一个密码校验程序

import java.util.Scanner;
public class PswVerify {
	public static void main (String[ ]args) { 	
    	Scanner input = new Scanner(System.in);
    	String username="zhangsan";
    	String password="000000";
    	for(int i=3;i>=1;i--){
    		System.out.println("请输入用户名:\n");
    		String huiyuanhao = input.next();
    		System.out.println("请输入密码:\n");
    		String mima = input.next();
    		if((huiyuanhao.equals(username)&&mima.equals(password))){
    			System.out.println("欢迎进入我行我素购物管理系统\n"); 
    			break;
    		}
    		else if(i>1){   			
    			System.out.println("用户名与密码不匹配！\n你还有"+(i-1)+"次机会，请重新输入"); 
    		}
    		else{
    			System.out.println("用户名或密码错误"); 
    		}
    	}  	
    	System.out.println("程序结束"); 
     }
 	
}