Java线程同步

最新推荐文章于 2025-04-15 04:00:00 发布

原创最新推荐文章于 2025-04-15 04:00:00 发布 · 106 阅读

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#java #多线程

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这篇博客展示了如何使用Java实现多线程并发取款操作。通过`DrawThread`类创建线程，每个线程尝试从`Account`类的实例中取款。在`Thread_test_syn`类的主方法中，多个线程并发启动，可能导致余额不足的问题，揭示了并发控制的重要性。

Account.java
/*

bankAccount 类
*/
package com.fatiaoyu;

public class Account {
private int balance; //余额

public Account(int balance) {
	this.balance = balance;
}
public int getBalance() {
	return balance;
}
public void setBalance(int balance) {
	this.balance=balance;
}

}

DrawThread.java

package com.fatiaoyu;

public class DrawThread extends Thread {

private Account account;        //账户
private int drawAccount;        //取钱数

public DrawThread(Account account,int drawAccount) {
	this.account = account;
	this.drawAccount = drawAccount;
}
public void run() {
	if(account.getBalance()>drawAccount) {
		System.out.println(Thread.currentThread().getName()+",取钱成功,取出"+drawAccount);
		account.setBalance(account.getBalance()-drawAccount);
		System.out.println("修改余额成功,现在的余额是:"+account.getBalance());
	}else {
		System.out.println(Thread.currentThread().getName()+",取钱失败,余额不足");
	}
}

}

Thread_test_syn.java

package com.fatiaoyu;

public class Thread_test_syn {
public static void main(String[] args) {

	Account account = new Account(1000);

	DrawThread t1 = new DrawThread(account, 500);
	t1.setName("取钱者1");
	DrawThread t2 = new DrawThread(account, 600);
	t2.setName("取钱者2");
	DrawThread t3 = new DrawThread(account, 700);
	t3.setName("取钱者3");
	DrawThread t4 = new DrawThread(account, 900);
	t4.setName("取钱者4");

	t1.start();
	t2.start();
	t3.start();
	t4.start();
}

}

打印结果：
在这里插入图片描述