实现多线程的四种方式

待我称王封你为后i 2023-10-10 04:27 15阅读 0赞

实现多线程的四种方式

1.实现Runnable接口，重写run方法

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ4MzQ5_size_16_color_FFFFFF_t_70][]

2.继承Thread类，重写run方法，Thread类也是实现了Runnable接口

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ4MzQ5_size_16_color_FFFFFF_t_70 1][]

3. 实现callable接口，重写call方法，有返回值

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ4MzQ5_size_16_color_FFFFFF_t_70 2][]

4.使用线程池

submit方法返回带有返回值

execute方法没有返回值

private ThreadPoolExecutor poolExecutor = new ThreadPoolExecutor(
                1, 1, 1L, TimeUnit.SECONDS,
                new ArrayBlockingQueue<>(2),
                new ThreadPoolExecutor.DiscardOldestPolicy());

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ4MzQ5_size_16_color_FFFFFF_t_70 3][]

也可以通过Executors类来创建线程，提供了一系列工厂方法用于创建线程池，返回的线程池都实现了ExecutorService接口。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ4MzQ5_size_16_color_FFFFFF_t_70 4][]

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