线程的创建ThreadNew

1.继承Thread类

public class ThreadNew {
    public static void main(String[] args) {
        new MyThread1().start();
}
//1.继承Thread类
class MyThread1 extends Thread{
    @Override
    public void run() {
        System.out.println("MyThread1");
    }
}

2.实现Runnable接口

public class ThreadNew {
    public static void main(String[] args) {
        new Thread(new MyThread2()).start();
}
//2.实现Runnable接口
class MyThread2 implements Runnable{
    @Override
    public void run() {
        System.out.println("MyThread2");
    }
}

3.直接使用匿名内部类的方式

public class ThreadNew1 {
    public static void main(String[] args) {
        Thread thread = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("MyThread4");
            }
        });
        thread.start();
    }
}

4.使用Lambda表达式的方式

public class ThreadNew2 {
    public static void main(String[] args) {
        Thread thread = new Thread(() -> System.out.println("MyThread5"));
        thread.start();
    }
}

5.利用线程池创建线程

public class ThreadNew3 implements Runnable {
    public static void main(String[] args) {
        ExecutorService executorService= Executors.newFixedThreadPool(10);
        executorService.execute(new ThreadNew3());
    }

    @Override
    public void run() {
        System.out.println("MyThread6");
    }
}