java 使用volatile实现线程数据的共享

public class VolatileTest extends Thread {

    private volatile boolean isRunning = true;

    private void setRunning(boolean s) {
        isRunning = s;
    }

    @Override
    public void run() {
        System.out.println(isRunning);
        while (isRunning) {
            //System.out.println("isRunning  true");
        }
        System.out.println("停止命令");
    }

    public static void main(String[] args) throws InterruptedException {
        VolatileTest t = new VolatileTest();
        t.start();
        Thread.sleep(3000);
        t.setRunning(false);
        Thread.sleep(2000);
    }
}