About JAVA multithreading : How to create a process with extends Thread and implement Runnable

Question

When I was reading the book "Thinking in JAVA", I found a question about JAVA multithreading.

    class ThreadMethod {
    private int countdown = 5;
    private Thread t;
    private String name;

    public ThreadMethod(String name) {
        this.name = name;
    }

    public void runTask() {
        if (t == null) {
            t = new Thread(name) {
                public void run() {
                    while (true) {
                        System.out.println(this);
                        if (--countdown == 0) return;
                        try {
                            sleep(10);
                        } catch (InterruptedException e) {
                            System.out.println("interrupted");
                        }
                    }
                }

                public String toString() {
                    return getName() + ": " + countdown;
                }
            };
            t.start();
        }
    }
}

public class ThreadVarations{
    public static void main(String[] args) {
        for(int i=0;i<10;i++)
        new ThreadMethod("ThreadMethod").runTask();
    }
}

The class ThreadMethod doesn't extends Thread and implements Runnable . So the class how to create a process?

Answer 1

您需要使用实现Runnable的给定类来启动新线程，并在其上调用start，方法run()将在另一个线程中调用。

new Thread(new ThreadMethod).start();