Question

基于JAVA的银行账户管理

Answer 1

首先是不知道你要问什么，能不能清楚点啊。下面的这个可以吗？
如果不行你可以试一试用枚举啊

package com.cn11;

public class FetchMoney
{
public static void main(String[] args)
{
Bank bank=new Bank();
Thread t1=new MoneyThread(bank);
Thread t2=new MoneyThread(bank);
Thread t3=new MoneyThread(bank);
Thread t4=new MoneyThread(bank);
t1.start();
t2.start();
t3.start();
t4.start();

}

}
class Bank
{
private int money =2400;
public synchronized int getMoney(int number)
{
if(number<0)
{
return -1;
}
else if (number>money)
{
return -2;
}
else
{
try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
money-=number;
return money;
}
}
}
class MoneyThread extends Thread
{
private Bank bank;
public MoneyThread(Bank bank)
{
this.bank=bank;
}
@Override
public void run()
{
System.out.println(this.bank.getMoney(800));
}

}