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src/com/wasteinformationserver/mqtt/mqtttransmitter.java

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+package com.wasteinformationserver.mqtt;
+
+import org.eclipse.paho.client.mqttv3.MqttClient;
+import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
+import org.eclipse.paho.client.mqttv3.MqttException;
+import org.eclipse.paho.client.mqttv3.MqttMessage;
+import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
+
+public class mqtttransmitter {
+
+    public mqtttransmitter() {
+
+        String topic        = "kk";
+        String content      = "Message from MqttPublishSample";
+        int qos             = 2;
+        String broker       = "tcp://192.168.65.15:1883";
+        String clientId     = "JavaSample";
+        MemoryPersistence persistence = new MemoryPersistence();
+
+        try {
+            MqttClient sampleClient = new MqttClient(broker, clientId, persistence);
+            MqttConnectOptions connOpts = new MqttConnectOptions();
+            connOpts.setCleanSession(true);
+            System.out.println("Connecting to broker: "+broker);
+            sampleClient.connect(connOpts);
+            System.out.println("Connected");
+            System.out.println("Publishing message: "+content);
+            MqttMessage message = new MqttMessage(content.getBytes());
+            message.setQos(qos);
+            sampleClient.publish(topic, message);
+            System.out.println("Message published");
+            sampleClient.disconnect();
+            System.out.println("Disconnected");
+            System.exit(0);
+        } catch(MqttException me) {
+            System.out.println("reason "+me.getReasonCode());
+            System.out.println("msg "+me.getMessage());
+            System.out.println("loc "+me.getLocalizedMessage());
+            System.out.println("cause "+me.getCause());
+            System.out.println("excep "+me);
+            me.printStackTrace();
+        }
+    }
+}