实例 Java 通过扩展 thread 类来运行线程

public class Main extends Thread {

  public static void main(String[] args) {

    Main thread = new Main();

    thread.start();

    System.out.println("This code is outside of the thread");

  }

  public void run() {

    System.out.println("This code is running in a thread");

  }

}

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