Java多线程基础

1.通过继承Thread类实现多线程：

public class Thread1 extends Thread{
    /**
     * 该线程类的线程体
     */
    public void run(){ //线程体
        for (int i = 0; i < 100; i++) {
            System.out.println(this.getName()+":"+i);
        }
    }
    
    public static void main(String[] args) {
        Thread1 a = new Thread1();
        a.start();
        Thread1 b = new Thread1();
        b.start();
    }
}

2.通过实现Runnable接口实现多线程：

public class Thread2 implements Runnable{
    int threadId;
    
    public Thread2(int id) {
        super();
        this.threadId = id;
    }

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println(this.threadId+":"+i);
        }
    }
    
    public static void main(String[] args) {
        Thread a = new Thread(new Thread2(1));
        a.start();
        Thread b = new Thread(new Thread2(2));
        b.start();
    }
}