Question

如果我扩展ThreadPoolExecutor，有没有办法重用工厂方法，如：

public static ExecutorService newSingleThreadExecutor()

或者我必须调用我的ThreadPoolExecutor子类的构造函数并输入所有参数：

class MyThreadPoolExecutor extends ThreadPoolExecutor {
  ...
  public MyThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, RejectedExecutionHandler handler) {
    super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, handler);
  };
  ...
}

Answer 1

没有办法做第一个。我建议做另一种方式：

class MyThreadPoolExecutor extends ThreadPoolExecutor {
  ...
  public MyThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, RejectedExecutionHandler handler) {
    super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, handler);
  };
  ...
}

因为这是唯一的方法。

ThreadPoolExecutor子类的构造函数

1 个答案: