Java多线程并发问题：死锁示例-蒲公英云

Java多线程并发问题：死锁示例

原创骑猪看日落 2024-09-12 16:27 303阅读 0赞

在Java中，死锁通常发生在两个或更多线程互相等待对方释放资源时的情况。以下是一个简单的死锁示例：

public class DeadlockExample {
    // 线程1需要的资源
    private Object resource1 = new Object();
    // 线程2需要的资源
    private Object resource2 = new Object();
    public void startThreads() {
        Thread thread1 = new Thread(() -> acquireResource(resource1)));
        Thread thread2 = new Thread(() -> acquireResource(resource2)));
        thread1.start();
        thread2.start();
    }
    // 线程尝试获取资源
    private synchronized void acquireResource(Object resource) {
        if (resource.equals(resource1)) {
            System.out.println("Thread 1 acquired resource 1.");
            unlockResource(resource1);
        } else if (resource.equals(resource2))) {
            System.out.println("Thread 2 acquired resource 2.");
            unlockResource(resource2);
        } else {
            throw new IllegalArgumentException("Invalid resource to acquire.");
        }
    }
    // 线程释放资源
    private synchronized void unlockResource(Object resource) {
        System.out.println("Thread released resource " + resource + ".");
    }
    public static void main(String[] args) {
        DeadlockExample deadlockExample = new DeadlockExample();
        deadlockExample.startThreads();
    }
}