java版本 停止Java线程，小心interrupt()方法(6)

import??java.io.*;????

class??Example5??extends??Thread??{????

????volatile??boolean??stop??=??false;????

????volatile??ServerSocket??socket;????

????public??static??void??main(??String??args[]??)??throws??Exception??{????

????????Example5??thread??=??new??Example5();????

??????System.out.println(??"Starting??thread..."??);????

??????thread.start();????

??????Thread.sleep(??3000??);????

??????System.out.println(??"Asking??thread??to??stop..."??);????

??????thread.stop??=??true;????

??????thread.socket.close();????

??????Thread.sleep(??3000??);????

??????System.out.println(??"Stopping??application..."??);????

??????//System.exit(??0??);????

????}????

????public??void??run()??{????

????????try??{????

????????????socket??=??new??ServerSocket(7856);????

????????}??catch??(??IOException??e??)??{????

??????????System.out.println(??"Could??not??create??the??socket..."??);????

????????????return;????

????????}????

????????while??(??!stop??)??{????

??????????System.out.println(??"Waiting??for??connection..."??);????

????????????try??{????

??????????????Socket??sock??=??socket.accept();????

????????????}??catch??(??IOException??e??)??{????

????????????System.out.println(??"accept()??failed??or??interrupted..."??);????

????????????}????

????????}????

??????System.out.println(??"Thread??exiting??under??request..."??);????

????}????

}????

以下是运行Listing E中代码后的输出：??

Starting thread...??

Waiting for connection...??

Asking thread to stop...??

accept() failed or interrupted...??

Thread exiting under request...??

Stopping application...??

多线程是一个强大的工具，然而它正呈现出一系列难题。其中之一是如何中断一个正在运行的线程。如果恰当地实现，使用上述技术中断线程将比使用Java平台上已经提供的内嵌操作更为简单。

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