//主要實現
public class Bank {
    static String bankName;//銀行名稱
    private String name;//儲戶名字
    private String password;//密碼
    private double balance;//賬戶餘額
    private double turnover;//交易額

    static void welcome()
    {
        System.out.println("歡迎您來到"+bankName);
    }


    public Bank(String name,String password,double
 
 turnover)
    {
        this.name = name;
        this.password=password;
        this.turnover = turnover;
        this.balance = turnover-10;

        System.out.println(name+"開戶成功"+"餘額為："+balance);
    }
    //存款
    public void depoist(double turnover)
    {
        balance = balance+turnover;
        System.out.println(name+"您好，您的賬戶已存入"
 
+balance+"元"+"當前餘額為："+balance+"元");
    }

    //取款
    public void withdrawl(String password,double turnover)
    {
        if(this.password!=password)
        {
            System.out.println("抱歉，你輸入的密碼有誤");
            return ;
        }
        if(balance-turnover>0)
        {
            System.out.println("您已取出"
 
+turnover+"元"+"當前餘額為"+(balance-turnover));
        }
        else
        {
            System.out.println("抱歉，你的餘額已不足");
        }
    }


    static void welcomenext()
    {
        System.out.println("請攜帶好您的隨身物品，歡迎下次再來");
    }
}




//測試


public class Trade {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Bank.bankName="建設銀行";
        Bank.welcome();
        Bank bank = new Bank("張華","123456",200.0);

        bank.depoist(200.0);
        bank.withdrawl("123456", 150.0);
        bank.withdrawl("333456", 150.0);
        bank.withdrawl("123456", 500.0);
        Bank.welcomenext();
    }
}

程式碼運算結果如下：