如何停止另一个Java线程？

Question

Maybe I'm thinking to complicated, but I have the following situation:

I have a class Server.java extending Thread with the following relevant part of the code:

public void run() {
    while(listening) {
        try {
            ServerThread cst = new ServerThread(serverSocket.accept());
            cst.start();
        } catch (IOException e) {
            listening = false;
            System.out.println(e.getMessage());
        }
    }
}

My ServerThread then handles all the incoming stuff.

My question now is, if there is any possibility to stop this Thread (Server) like for example over the command line.

I tried to add a new class, that would handle command line input and .interrupt() this Thread, but that kinda just made a big mess..

Answer 1

Here's one way:

1. Provide a setter for listening that can be accessed from another class/thread.

2. Set a reasonable timeout (say, 1 sec) on the ServerSocket and handle the SocketTimeoutException .

To stop the thread, set listening to false and within 1 second the thread will stop. If you want finer control, investigate the async I/O classes in java.nio .

Answer 2

您可以使用setter将侦听定义为volatile ，并在每次要停止Thread时将其设置为false 。