Question

I am new to thread programming in Java and hence this basic question. (I checked, but could not find this question previously asked)

I read that threads can be created either by inheriting the Thread class or by implementing the Runnable interface.
I saw a code which had both to the same class.

public class ThreadExample extends Thread implements Runnable {
}

I was wondering what kind of situation would want this and if there is any advantage to this, what is it.

Answer 1

extending Thread and implementing Runnable is useless (Thread already implements Runnable). You pretty much always want to implement Runnable (and not extend Thread). That gives you the flexibility of using a Thread directly (not recommended) or using one of the newer ThreadPool implementations in java.util.concurrent (recommended).