java多线程编程--如何终止一个线程_关闭java主线程

1. Thread.stop()函数

2. 改变标志变量状态

通常我们会在线程中使用一个标志变量来控制线程的运行，如:

public class TestCallable implements Runnable {
 
 
    private boolean running = true;
 
    public void stop() {
        this.running = false;
    }
 
    public void run() {
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            while (running) {
                System.out.println("线程正在运行中...");
                Thread.sleep(20000);
            }
            System.out.println("线程被终止.");
        } catch (IOException e) {
            e.printStackTrace();
        }
 
    }
 
    public static void main(String[] args) {
        try {
            TestCallable callable = new TestCallable();
            Thread th = new Thread(callable);
            th.start();
            Thread.sleep(1000);
            callable.stop();
            System.out.println("已下达终止线程命令。");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

3. 中断函数interrupt()

public class TestCallable extends Thread {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
 
    public void stopThread() {
      interrupt();
    }
 
    public void run() {
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            reader.close();
            while (!isInterrupted()) {
                System.out.println("线程正在运行中...");