Java创建多线程异步执行实现代码解析

public class ThreadTest implements Runnable {
  public static void main(String[] args) {
    Thread thread = new Thread(new ThreadTest());
    thread.start();
  }
  @Override
  public void run() {
    System.out.println("Runable 方式创建的新线程");
  }
}

public class ThreadTest extends Thread{
  @Override
  public void run() {
    System.out.println("Thread 方式创建的线程");
  }

  public static void main(String[] args) {
    new ThreadTest().start();
  }
}

public static void main(String[] args) {
   new Thread(() -> {
      System.out.println("新线程");
   }).start();
}