JAVA-6-简单的模拟ATM使用

 public static void main(String[] args) {
         in = new Scanner(System.in);
         int count = 1;
         int pwd = 111111;
         while (true) {
             System.out.println("请输入密码：");
             int pwssword = in.nextInt();
             count++;
             if (count > 3) {
                 System.out.println("密码错误，请取卡！");
                 return;
             }
             if (pwssword == pwd) {

                 break;
             } else
                 System.out.println("密码错误，请重新输入密码：");
         }
         int sum = 0, money = 0;
         char p = 'Y';
         first: while (p == 'Y') {
             System.out.println("请输入0~6之间数字：");
             System.out.println("0、手动输入金额\t1、100\t2、300\t3、500\t4、1000\t5、3000\t6、5000");
             int num = in.nextInt();
             switch (num) {
             case 0:
                 System.out.println("手动输入金额：");
                 money = in.nextInt();

                 if (money <= 1000 && money >= 0 && money % 100 == 0) {

                     break;
                 } else {
                     System.out.println("金额错误，是否继续Y/N");
                     p = in.next().charAt(0);
                     if (p == 'Y') {
                         continue;
                     } else {
                         break first;
                     }
                 }

             case 1:
                 money = 100;
                 break;
             case 2:
                 money = 300;
                 break;
             case 3:
                 money = 500;
                 break;
             case 4:
                 money = 1000;
                 break;
             case 5:
                 money = 3000;
                 break;
             case 6:
                 money = 5000;
                 break;
             default:
                 System.out.println("输入错误，是否继续Y/N");
                 p = in.next().charAt(0);
                 if (p == 'N') {
                     break first;
                 } else {
                     continue;
                 }
             }

             sum += money;
             if (sum < 20000) {

                 System.out.println("本次取款" + money + "元");
                 System.out.println("共取钱" + sum + "元");
                 System.out.println("取款完成，是否继续Y/N");
                 p = in.next().charAt(0);

             } else if (sum == 20000) {
                 System.out.println("今日取钱已达上限20000,请退卡");
                 break;
             } else {
                 sum = sum - money;
                 System.out.println("取款失败");
                 System.out.println("共取钱" + (sum) + "元");
                 System.out.println("还可以取款" + (20000 - sum) + "元");
                 System.out.println("是否继续Y/N");
                 p = in.next().charAt(0);
                 continue;
             }
         }
     }