Which of those ways of using Thread class is correct? Thread t = new Thread() or Thread t = new Thread(new Class())?

Question

I've seen 2 ways of using a Thread class:

// 1
public class Main extends Thread {
    public void run() {
        System.out.println("abc");
    }
    public static void main(String[] args) {
        Thread t = new Thread(new Main()); 
        t.start();

    }
}

// 2
class Main2 extends Thread {
    public void run() {
        System.out.println("abc");
    }
    public static void main(String[] args){
        Main2 m = new Main2();
        m.start();

    }
}

What are the differences between those 2?

Which way is correct?

I mean, neither is the way threading happens typically in modern Java; you use Executors. — Louis Wasserman, Dec 23 '21 at 20:12

Turing85 · Answer 1 · 2021-12-23T19:46:36.223

1

1 is possible, but superfluous. It works because Main implicitly implements Runnable since it extends Thread. We would use 1 if Main would only implements Runnable, but not extends Thread.

The "correct" approach is 2.

edited Dec 23 '21 at 19:46

answered Dec 23 '21 at 19:44

Turing85

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what will be better 2 or implements runnable? – стасевич Dec 23 '21 at 19:46
There is no "better" here. It is a matter of personal choice and context. – Turing85 Dec 23 '21 at 19:47

Which of those ways of using Thread class is correct? Thread t = new Thread() or Thread t = new Thread(new Class())?

1 Answers1