Java编写多线程




//两种方式





public class ThreadDemo extends Thread{

    public void run(){

        System.out.println("线程"+Thread.currentThread().getName());

    }

    public static void main(String[] args){

        ThreadDemo t1 = new ThreadDemo();//创建线程

        t1.start();//启动线程

         

        //创建第二个线程

        ThreadDemo t2 = new ThreadDemo();//创建线程

        t2.start();//启动线程

    }

}




//方式二，实现Runnable接口





public class ThreadDemo implements Runnable{

    public void run(){

        System.out.println("线程"+Thread.currentThread().getName());

    }

    public static void main(String[] args){

        //创建线程实例

        ThreadDemo td = new ThreadDemo()

        //创建线程1

        Thread t1 = new Thread(td);

        t1.start();  

        //创建线程2

        Thread t2 = new Thread(td);

        t2.start();  

    }

}