BAEL-4908 added code for pubsub vs message queues tutorial

rabbitmq/src/main/java/com/baeldung/pubsubmq/client/ClientApplication.java

@@ -0,0 +1,43 @@
+package com.baeldung.pubsubmq.client;
+
+import org.springframework.amqp.core.Queue;
+import org.springframework.amqp.rabbit.connection.ConnectionFactory;
+import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
+import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+
+@SpringBootApplication
+public class ClientApplication {
+    private static final String MESSAGE_QUEUE = "pizza-message-queue";
+
+    @Bean
+    public Queue queue() {
+        return new Queue(MESSAGE_QUEUE);
+    }
+
+    @Bean
+    public SimpleMessageListenerContainer container(ConnectionFactory connectionFactory, MessageListenerAdapter listenerAdapter) {
+        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
+        container.setConnectionFactory(connectionFactory);
+        container.setQueueNames(MESSAGE_QUEUE);
+        container.setMessageListener(listenerAdapter);
+        return container;
+    }
+
+    @Bean
+    public Consumer consumer() {
+        return new Consumer();
+    }
+
+    @Bean
+    public MessageListenerAdapter listenerAdapter(Consumer consumer) {
+        return new MessageListenerAdapter(consumer, "receiveOrder");
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(ClientApplication.class, args);
+    }
+}