//第一種(直接創(chuàng)建)
        Thread thread = new Thread();
        thread.start();
        System.out.println("第一種Thread寫法");

        //第二種(以之類的形式創(chuàng)建)
        Thread threadExtread = new ThreadExtread();
        threadExtread.start(); 
        //第一種和第二種其實相同
        
        //第三種(組合形式創(chuàng)建)
        Thread threadThree = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("第三種Thread寫法");
            }
        });
        threadThree.start();

public class ThreadExtread extends Thread {

    @Override
    public void run() {
        System.out.println("第二種Thread寫法");     
    }
}