JAVA编写银行账户程序摸拟银行账户的存尀取款操作

public class ATM {
public static void main(String[] args) {
// 开立帐号
Account account = new Account();
// 在 account 中存 10,000 元
account.setBalance(10000);
// 检查 account 中的存款
System.out.println("帐户原竖仿者始大袭金额 : " + account.getBalance() + " 元");

// 小明, 小华与小英一起对 account 进行提款的动作
WithDraw s1 = new WithDraw("小明", account, 5000); // 小明 在 account 中提 5000 元
WithDraw s2 = new WithDraw("小华", account, 2000); // 小华 在 account 中提 2000 元
WithDraw s3 = new WithDraw("小英", account, 4000); // 小英 在 account 中提 4000 元
s1.start();
s2.start();
s3.start();

}
}

//帐户
class Account {
private int balance; // 帐户馀额

public int getBalance() { // 取得帐户馀额
return balance;
}

public void setBalance(int money) { // 设定帐户馀额
balance = money;
}

// 提款方法
public void withDraw(Account account, int withdrawMoney) {

String tName = Thread.currentThread().getName(); // tName=提款人

System.out.println(tName + " 开始提款 ... ");

boolean withDrawStatus; // 提款状态 说明:false=提款失败, true=提款成功

synchronized(ATM.class) {
int tmpBalabce = account.getBalance(); // 取得最新帐户馀额

//用 for-loop 模拟提款时系统所花的时间
for(double delay=0;delay<99999999;delay++) {
// ... 提款进行中 ...
}

tmpBalabce = tmpBalabce - withdrawMoney; // 最新帐户馀额 - 欲提款金额 (用来判断是否馀额足够的依据)

if (tmpBalabce < 0) { // 判断是否馀额足够
withDrawStatus = false;
System.out.println("....................");
System.out.println(" 帐户馀额不足！");
System.out.println("....................");
} else {
withDrawStatus = true;
account.setBalance(tmpBalabce); // 回存account最後剩余薯馀金额
}
}

System.out.println(tName + "的交易单:");
System.out.println("\t欲提款金额：" + withdrawMoney + "元");
System.out.println("\t帐户馀额：" + account.getBalance());

if(withDrawStatus == true){
System.out.println(tName + " 完成提款 ... ");
} else {
System.out.println(tName + " 提款失败 ... ");
}

System.out.println("-------------------------------");

}
}

// 提款类别
class WithDraw extends Thread {
private Account account; // 帐号
private int withdrawMoney; // 欲提款的金额

// tName:执行绪名称, account:Account物件名称, withdrawMoney:欲提款金额
public WithDraw(String tName, Account account, int withdrawMoney) {
setName(tName);
this.account = account;
this.withdrawMoney= withdrawMoney;
}

public void run() {
// 执行提款动作(account:帐号, withdrawMoney 欲提款金额)
account.withDraw(account, withdrawMoney); // 执行提款动作
}
}

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