多线程-上

public class Student extends Thread {
    @Override
    public void run() {
        for(int i=0;i<7;i++){
            System.out.println("lol");
        }
    }
}

public static void main(String[] args) {
        Student stu=new Student();
        stu.start();
        for(int i=0;i<7;i++){
            System.out.println(i);
        }
    }

public class Student implements Runnable {
    @Override
    public void run() {
        for(int i=0;i<7;i++){
            System.out.println("lol");
        }
    }
}

public static void main(String[] args) {
        Student stu=new Student();
        Thread thread=new Thread(stu);
        thread.start();
        for(int i=0;i<7;i++){
            System.out.println(i);
        }
    }