创建线程

new Thread(new Runnable() {
	@Override
	public void run() {
		while(true)
			System.out.println("running");
		}
}).start();

public class MyThread extends Thread {
	
	private static int a = 0;
	@Override
	public void run() {
		for(;;){
			if(a >= 100){
				return;
			}
			//Thread.yield();
			System.out.println(Thread.currentThread().getName()+ "   "+a);
			a++;
		}
	}
}

public static void main(String[] args) {
		MyThread myThread = new MyThread();
		
		MyThread myThread1 = new MyThread();
		MyThread myThread2 = new MyThread();
		
		myThread.start();
		myThread1.start();
		myThread2.start();
}

public class MyRunnable implements Runnable {
    private int a = 0;

    @Override
    public void run() {
        for (int i = 0; i <= 100; i++) {
//			try {
//				Thread.sleep(3000);
//			} catch (InterruptedException e) {
//				e.printStackTrace();
//			}
            System.out.println(Thread.currentThread().getName() + "   " + i);
        }
    }
}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//创建线程执行目标类对象
		MyRunnable myRunnable = new MyRunnable();
		
		//创建线程对象，传入线程执行目标类对象
		Thread t1 = new Thread(myRunnable,"花花");
		Thread t2 = new Thread(myRunnable,"红红");
		Thread t3 = new Thread(myRunnable,"兰兰");
		
		//启动线程
		t1.start();
		t2.start();
		t3.start();
	}

FutureTask futureTask=new FutureTask(new Callable() {
    @Override
    public String call() throws Exception {
        Thread.sleep(3000);
        System.out.println("calld方法执行了");
        return "call方法返回值";
    }
});
futureTask.run();
System.out.println("获取返回值: " + futureTask.get());

FutureTask futureTask1=new FutureTask(new Callable() {
    @Override
    public String call() throws Exception {
        Thread.sleep(3000);
        System.out.println("calld方法执行了1");
        return "call方法返回值1";
    }
});
futureTask1.run();
System.out.println("获取返回值1: " + futureTask1.get());