Java线程

Question

How do I implement a ThreadPoolExecutor? What needs to be done to use it?

Answer 1

The API Specification for the ThreadPoolExecutor class has four constructors which can be used to create an instance of the ThreadPoolExecutor .

The Executors class also has methods such as newCachedThreadPool and newFixedThreadPool methods, but those are only listed as returning an ExecutorService , so it doesn't necessarily have to be a ThreadPoolExecutor .

For more general information on Executors and the Java concurrency package, the Lesson: Concurrency from The Java Tutorials has more information. In particular, the Executors and Thread Pools section may be of interest.

Answer 2

Executor is a interface. Implementing it allows clients to pass you runnable tasks, which are then executed in a particular manner. ThreadPoolExecutor is one class implementing that interface (and ExecutorService). It uses a thread pool so you can have multiple threads executing jobs without needing a new thread for every job. ThreadPoolExecutor can be subclassed, or you can just instantiate it with one of the public constructors.

Other methods, such as Executors.newFixedThreadPool , return a thread pool of some kind though not (necessarily) a ThreadPoolExecutor.

Answer 3

Java Concurrency in Practice - Addison Wesley ISBN:0321349601 I used this book to learn about Executors. I has a bunch of good examples you can steal.

Answer 4

我建议您从该课程的教程开始http://java.sun.com/docs/books/tutorial/essential/concurrency/exinter.html