Refactor JMS examples

spring-jms/src/main/java/com/baeldung/spring/jms/SampleJmsMessageSender.java

@@ -1,16 +1,11 @@
 package com.baeldung.spring.jms;
 
+import org.springframework.jms.core.JmsTemplate;
+
+import javax.jms.Queue;
 import java.util.HashMap;
 import java.util.Map;
 
-import javax.jms.JMSException;
-import javax.jms.Message;
-import javax.jms.Queue;
-import javax.jms.Session;
-
-import org.springframework.jms.core.JmsTemplate;
-import org.springframework.jms.core.MessageCreator;
-
 public class SampleJmsMessageSender {
 
     private JmsTemplate jmsTemplate;
@@ -25,16 +20,12 @@ public class SampleJmsMessageSender {
     }
 
     public void simpleSend() {
-        this.jmsTemplate.send(this.queue, new MessageCreator() {
-            public Message createMessage(Session session) throws JMSException {
-                return session.createTextMessage("hello queue world");
-            }
-        });
+        jmsTemplate.send(queue, s -> s.createTextMessage("hello queue world"));
     }
 
     public void sendMessage(final Employee employee) {
         System.out.println("Jms Message Sender : " + employee);
-        Map<String, Object> map = new HashMap<String, Object>();
+        Map<String, Object> map = new HashMap<>();
         map.put("name", employee.getName());
         map.put("age", employee.getAge());
         this.jmsTemplate.convertAndSend(map);

spring-jms/src/main/java/com/baeldung/spring/jms/SampleListener.java

@@ -1,13 +1,12 @@
 package com.baeldung.spring.jms;
 
-import java.util.Map;
+import org.springframework.jms.core.JmsTemplate;
 
 import javax.jms.JMSException;
 import javax.jms.Message;
 import javax.jms.MessageListener;
 import javax.jms.TextMessage;
-
-import org.springframework.jms.core.JmsTemplate;
+import java.util.Map;
 
 public class SampleListener implements MessageListener {
 
@@ -31,7 +30,6 @@ public class SampleListener implements MessageListener {
 
     public Employee receiveMessage() throws JMSException {
         Map map = (Map) getJmsTemplate().receiveAndConvert();
-        Employee employee = new Employee((String) map.get("name"), (Integer) map.get("age"));
-        return employee;
+        return new Employee((String) map.get("name"), (Integer) map.get("age"));
     }
 }

spring-jms/src/main/java/com/baeldung/spring/jms/SampleMessageConverter.java

@@ -1,13 +1,13 @@
 package com.baeldung.spring.jms;
 
+import org.springframework.jms.support.converter.MessageConversionException;
+import org.springframework.jms.support.converter.MessageConverter;
+
 import javax.jms.JMSException;
 import javax.jms.MapMessage;
 import javax.jms.Message;
 import javax.jms.Session;
 
-import org.springframework.jms.support.converter.MessageConversionException;
-import org.springframework.jms.support.converter.MessageConverter;
-
 public class SampleMessageConverter implements MessageConverter {
 
     public Message toMessage(Object object, Session session) throws JMSException, MessageConversionException {
@@ -20,8 +20,7 @@ public class SampleMessageConverter implements MessageConverter {
 
     public Object fromMessage(Message message) throws JMSException, MessageConversionException {
         MapMessage mapMessage = (MapMessage) message;
-        Employee employee = new Employee(mapMessage.getString("name"), mapMessage.getInt("age"));
-        return employee;
+        return new Employee(mapMessage.getString("name"), mapMessage.getInt("age"));
     }
 
 }