哪位大神知道这道java题的代码该怎么写?

发布网友发布时间：2023-08-13 03:11

共5个回答

热心网友时间：2023-08-14 04:18

public static void showBalance(double balance) {
        System.out.println();
        System.out.println("*** 当前余额为：" + balance + "元 ***");
        System.out.println();
    }

    public static void bank(double balance) {
        Scanner scanner = null;
        try {
            boolean exit = false;
            while (!exit) {
                scanner = new Scanner(System.in);
                System.out.println("1.存款\t2.取款\t0.退出");
                System.out.print("请选择您需要办理的业务：");
                int option = scanner.nextInt();
                switch (option) {
                case 0:
                    System.out.println("谢谢使用！");
                    exit = true;
                    break;
                case 1:
                    System.out.print("请输入存款金额：");
                    int put = scanner.nextInt();
                    if (put <= 0) {
                        System.out.print("您的输入有误，请重新输入：");
                        put = scanner.nextInt();
                    }
                    balance = balance + put;
                    System.out.println("存款成功！");
                    showBalance(balance);
                    break;
                case 2:
                    System.out.print("请输入取款金额：");
                    int get = scanner.nextInt();
                    if (get <= 0) {
                        System.out.print("您的输入有误，请重新输入：");
                        get = scanner.nextInt();
                    }
                    if (balance - get < 0) {
                        System.out.print("您的余额不足，请重新输入：");
                        get = scanner.nextInt();
                    }
                    balance = balance - get;
                    System.out.println("取款成功");
                    showBalance(balance);
                    break;
                default:
                    System.out.println("您的输入有误，请重新输入：");
                    option = scanner.nextInt();
                    break;
                }

            }
        } finally {
            scanner.close();
        }
    }

    public static void main(String[] args) {
        bank(30000);
    }

热心网友时间：2023-08-14 04:18

import java.util.Scanner;

public class ATM {
    private float balance = 0;

    public ATM() {
    }

    public float getBalance() {
        return balance;
    }

    public void setBalance(float balance) {
        this.balance = balance;
    }

    public void mainMenu(){
        System.out.println("1 存款 2 取款 0 退出");
        System.out.print("请选择你需要办理的业务：");
    }

    public void continueMenu(){
        System.out.println("成功");
        System.out.println("\n***当前余额为："+this.balance+"元***\n");
    }

    public boolean withDraw(Scanner scanner){
        System.out.print("请输入取款金额：");
        float money = scanner.nextFloat();
        if (money < 0){
            System.out.println("取款金额错误");
            return false;
        }
        if (money > getBalance()){
            System.out.println("余额不足");
            return false;
        }
        setBalance(getBalance() - money);
        System.out.print("取款");
        return true;
    }

    public boolean deposit(Scanner scanner){
        System.out.print("请输入存款金额：");
        float money = scanner.nextFloat();
        if (money < 0){
            System.out.println("存款金额错误");
            return false;
        }
        setBalance(getBalance() + money);
        System.out.print("存款");
        return true;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        ATM atm = new ATM();
        boolean flag = false;
        int menuNum = 0;
        while (true){
            atm.mainMenu();
            menuNum = scanner.nextInt();
            if(menuNum==0){
                break;
            }
            switch (menuNum){
                case 1:{
                    flag = atm.deposit(scanner);
                    break;
                }
                case 2:{
                    flag = atm.withDraw(scanner);
                    break;
                }
                default:{
                    break;
                }
            }
            if(flag) atm.continueMenu();
        }
        System.out.println("谢谢使用！");
        scanner.close();
    }

}

热心网友时间：2023-08-14 04:19

我的颈椎病神奇的好了~

热心网友时间：2023-08-14 04:19

啊！！！我的眼睛！！！

热心网友时间：2023-08-14 04:20

看不清图片