How to run the following code in ecclipse IDE?

MQTT PUBLISH - SUBSCRIBE MODEL CODE IN JAVA

(slide 29)public class Publisher { public static final String BROKER_URL = "tcp://broker.mqttdashboard.com:1883"; private MqttClient client;

public Publisher() {

String clientId = Utils.getMacAddress() + "-pub"; try { client = new MqttClient(BROKER_URL, clientId); } catch (MqttException e) { e.printStackTrace(); System.exit(1); } } } //connecting client (slide 30)

MqttConnectOptions options = new MqttConnectOptions(); options.setCleanSession(false); options.setWill(client.getTopic("home/LWT"), //helps detecting failures of other clients "I'm gone".getBytes(), 2, true);

client.connect(options);

//the busniness logic (slide 31) public static final String TOPIC_TEMPERATURE = "home/temperature";

//... while (true) { publishBrightness(); Thread.sleep(500); publishTemperature(); Thread.sleep(500); } //...

private void publishTemperature() throws MqttException { final MqttTopic temperatureTopic = client.getTopic(TOPIC_TEMPERATURE);

final int temperatureNumber = Utils.createRandomNumberBetween(20, 30); final String temperature = temperatureNumber + "C";

temperatureTopic.publish(new MqttMessage(temperature.getBytes())); }

//publishBrightness() will be implemented the same way publishTemperature() is

//implementing the subscribing client

public class SubscribeCallback implements MqttCallback(slide 32) {

@Override public void connectionLost(Throwable cause) {}

@Override public void messageArrived(MqttTopic topic, MqttMessage message) { System.out.println("Message arrived. Topic: " + topic.getName() + " Message: " + message.toString());

if ("home/LWT".equals(topic.getName())) { System.err.println("Sensor gone!"); } }

@Override public void deliveryComplete(MqttDeliveryToken token) {}

}

\\make it known to the MqttClient before connecting (slide 34)

mqttClient.setCallback(new SubscribeCallback()); mqttClient.connect(); mqttClient.subscribe("home/#");