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1.使用Thread.stop()？

   极力不推荐此方式，此函数不安全且已废弃，具体可参考Java API文档

2.设置终止标识，例如：

import static java.lang.System.out;
public class TestThread extends Thread
{private boolean terminationFlag;public void run(){for (int i = 0; i != 10000000; ++i){if (terminationFlag)break;out.println(i + 1);}}public void terminate(){terminationFlag = true;}
}

3.使用Thread.interrupt()

   interrupt()函数本身并不能终止线程，需要做一些处理方可终止线程

   ①若线程任务中包含Object.wait()、Thread.sleep(long)等可能引发InterruptedException的函数，则在调用interrupt()后会抛出InterruptedException

import static java.lang.System.out;
import java.util.logging.Logger;
import java.util.logging.Level;
public class TestThread extends Thread
{private static final Logger LOGGER = Logger.getLogger("TestThread");public void run(){for (int i = 0; i != 10000000; ++i){try{Thread.sleep(100);out.println(i + 1);}catch (InterruptedException ex){LOGGER.log(Level.SEVERE, null, ex);break;  //执行break后退出循环，run()也将执行完毕}}}
}

②若线程任务中不包含可能引发InterruptedException的函数，则可将Thread.isInterrupted()的返回值作为终止标识

import static java.lang.System.out;
public class TestThread extends Thread
{public void run(){for (int i = 0; i != 10000000; ++i){if (isInterrupted())break;out.println(i + 1);}out.println("TestThread.run() will be finished");}
}