Java使用嵌套循环模拟ATM机取款业务操作示例

package com.jredu.ch03;
import java.util.Scanner;
public class Work4 {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scan = new Scanner(System.in);
        for (int i = 1; i < 4; i++) {
            System.out.print("请输入密码：");
            String pwd = scan.next();
            if (!pwd.equals("111111")) {
                //密码错误
                if(i==3){
                    System.out.println("密码错误，请取卡");
                }else{
                    System.out.println("密码错误，还有"+(3-i)+"次机会");
                }
            }else{
                //密码正确
                while(true){
                    System.out.print("请输入金额:");
                    int money = scan.nextInt();
                    if(money%100==0&&money>0&&money<=1000){
                        System.out.println("您取了"+money+"元");
                        System.out.println("交易完成，请取卡！");
                        return;
                    }else{
                        System.out.println("金额有误，请重新输入");
                    }
                }
                }
        }
    }
}