https://codedestine.com/redis-jedis-pub-sub-java/

    public static void main(String[] args) {
        Jedis jedis = new Jedis();
        JedisPubSub jedisPubSub = new JedisPubSub() {
            @Override
            public void onPMessage(String pattern, String channel, String message) {
                System.out.println("Channel " +channel+ " has sent a message : " +message+ " on pattern " + pattern);
                if(pattern.equals("C*")) {
                    /* Unsubscribe from pattern C* after first message is received. */
                    punsubscribe(pattern);
                }
            }

            @Override
            public void onPSubscribe(String pattern, int subscribedChannels) {
                System.out.println("Client is Subscribed to pattern : "+ pattern);
                System.out.println("Client is Subscribed to "+ subscribedChannels + " no. of patterns");
            }

            @Override
            public void onPUnsubscribe(String pattern, int subscribedChannels) {
                System.out.println("Client is Unsubscribed from pattern : "+ pattern);
                System.out.println("Client is Subscribed to "+ subscribedChannels + " no. of patterns");
            }
        };
        jedis.psubscribe(jedisPubSub, "model_*");
    }