Question

创建Account类的两个子类（如何用Java实现）

支票账户（CheckingAccount）和储蓄账户（SavingsAccount）.支票账户有一个透支限定额，但储蓄账户不能透支。编写一个测试程序，创建Account、SavingAccount和CheckignAccount的对象，实现相关信息的输入和输出。

该如何用Java编写呢？

Answer 1

public class Bank
{
private long balance=0;
public Bank(){}
public void draw(int x) //存款
{
if(x<=balance)
{
balance=balance-x;
System.out.println("Draw "+x+" Yuan success!");
}
else
{
System.out.println("The balance remain is not enough!");
}
}
public void deposit(int x) //取款
{
balance=balance+x;
System.out.println("Deposit "+x+" Yuan success!");
}
public void check() //查询
{
System.out.println("The balance remained is "+balance+" Yuan

");
}
public static void main(String[] args)
{
Bank bank1=new Bank();
bank1.deposit(10000);
bank1.check();
bank1.draw(3000);
bank1.check();
bank1.draw(8000);
bank1.deposit(5000);
bank1.check();
bank1.draw(8000);
bank1.check();
}
}