🍇线程的创建

🍐1.继承 Thread 类

class MyThread extends Thread{
    @Override
    public void run() {
        while (true){
            System.out.println("hello thread");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
public class demo1 {
    public static void main(String[] args) throws InterruptedException {
        Thread t = new MyThread();
        t.start();
        while (true){
            System.out.println("hello main");
            Thread.sleep(1000);
        }
    }
}

🍐2.实现Runnable接口

class MyRunnable implements Runnable{
    @Override
    public void run() {
        while (true){
            System.out.println("hello thread2");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

public class demo2 {
    public static void main(String[] args) throws InterruptedException {
        Thread t = new Thread(new MyRunnable());
        t.start();
        while (true){
            System.out.println("hello main2");
            Thread.sleep(1000);
        }
    }
}

🍐3.匿名内部类

public class demo3 {
    public static void main(String[] args) throws InterruptedException {
        Thread t = new Thread(){
            @Override
            public void run() {
                while (true){
                    System.out.println("hello thre