pubnub_sub_example.java

public void testSub() throws PubNubException, InterruptedException {
    PNConfiguration pnConfiguration = new PNConfiguration();
    pnConfiguration.setSubscribeKey("demo");
    pnConfiguration.setPublishKey("demo");
    PubNub pubnub = new PubNub(pnConfiguration);

    pubnub.addListener(new SubscribeCallback() {
        @Override
        public void status(PubNub pubnub, PNStatus status) {

        }

        @Override
        public void message(PubNub pubnub, PNMessageResult message) {
            System.out.println(message);
        }

        @Override
        public void presence(PubNub pubnub, PNPresenceEventResult presence) {

        }
    });
    pubnub.subscribe().channels(Arrays.asList("blah")).execute();

    // You need to wait for any subscribe callback on you own, for ex:
    // Thread.sleep(1000*1000);
}