Run Following Code Ecclipse Ide Mqtt Publish Subscribe Model Code Java Slide 29 Public Cla Q34194402

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 detectingfailures 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(newMqttMessage(temperature.getBytes()));
}

//publishBrightness() will be implemented the same waypublishTemperature() is

//implementing the subscribing client

public class SubscribeCallback implements MqttCallback(slide32)
{

@Override
public void connectionLost(Throwable cause) {}

@Override
public void messageArrived(MqttTopic topic, MqttMessagemessage)
{
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 (slide34)

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

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