用JAVA中的多线程示例银行取款问题
public class Test {public static void main(String[] args) {
Account account = new Account();
for (int i = 0; i < 1000; i++) {
new TestAccount1(account).start();
new TestAccount2(account).start();
}
}
}
/**
* @authorleno 账户类 默认有余额，可以取款
*/
class Account {
private float balance = 1000;
public float getBalance() {
return balance;
}
public void setBalance(float balance) {
this.balance = balance;
}
/**
* 取款的方法需要同步
*
* @parammoney
*/
public synchronized void withdrawals(float money) {
if (balance >= money) {
System.out.println("被取走" + money + "元!");
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
balance -= money;
} else {
System.out.println("对不起,余额不足!");
}
System.out.println("余额为:" + getBalance() + "元!");
}
}
/**
* @authorleno 银行卡
*/
class TestAccount1 extends Thread {
private Account account;
public TestAccount1(Account account) {
this.account = account;
}
@Override
public void run() {
account.withdrawals(2);
}
}
/**
* @authorleno 存折
*/
class TestAccount2 extends Thread {
private Account account;
public TestAccount2(Account account) {
this.account = account;
}
@Override
public void run() {
account.withdrawals(1);
}
}
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