Java Continuously read from active sockets

I'm basically programming a game server to use for a RPG game, I'm doing all within Java 8 and Socket.

So to the point; I am listening incoming connections from a single thread, if the connection is accepted I then add this connection to a Runnable class called " Communication " what this class does is loop through all existing connections to process more " incoming data / packets " as follows:

public void run() {
        while (true) {
            try {
                Thread.sleep(100);
                for (int i = 0; i < connections.size(); i++) {
                    try {
                        Connection connection = connections.get(i);

                        if (!connection.active) {
                            connections.remove(connection);
                        } else {
                            connection.listen();
                        }
                    } catch (IndexOutOfBoundsException e) {
                        continue;
                    }
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

What the connection.listen method does is call "Socket.read" to read incoming packets/requests from the connected game client, this is the best way I've found to "asynchronously" listen to all active connections which might be up to 10~500

Is this a good way to process what I'm doing ? Is there a better way ? Should I extend Thread class to use with my Communication thread ? Is this "good code" to consider ?