Resolves checkstyle errors for eip-* (#1069)

* Reduces checkstyle errors in eip-aggregator

* Reduces checkstyle errors in eip-message-channel

* Reduces checkstyle errors in eip-publish-subscribe

* Reduces checkstyle errors in eip-splitter

* Reduces checkstyle errors in eip-wire-tap

eip-aggregator/src/main/java/com/iluwatar/eip/aggregator/App.java

@@ -30,21 +30,20 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.ConfigurableApplicationContext;
 
 /**
- * Sometimes in enterprise systems there is a need to group incoming data in order to process it as a whole. For example
- * you may need to gather offers and after defined number of offers has been received you would like to choose the one
- * with the best parameters.
- *
- * <p>
- * Aggregator allows you to merge messages based on defined criteria and parameters. It gathers original messages,
- * applies aggregation strategy and upon fulfilling given criteria, releasing merged messages.
- * </p>
+ * Sometimes in enterprise systems there is a need to group incoming data in order to process it as
+ * a whole. For example you may need to gather offers and after defined number of offers has been
+ * received you would like to choose the one with the best parameters.
  *
+ * <p>Aggregator allows you to merge messages based on defined criteria and parameters. It gathers
+ * original messages, applies aggregation strategy and upon fulfilling given criteria, releasing
+ * merged messages.
  */
 @SpringBootApplication
 public class App {
 
   /**
-   * Program entry point. It starts Spring Boot application and using Apache Camel it auto-configures routes.
+   * Program entry point. It starts Spring Boot application and using Apache Camel it
+   * auto-configures routes.
    *
    * @param args command line args
    */

eip-aggregator/src/main/java/com/iluwatar/eip/aggregator/routes/AggregatorRoute.java

@@ -30,16 +30,15 @@ import org.springframework.stereotype.Component;
 /**
  * Sample aggregator route definition.
  *
- * <p>
- * It consumes messages out of the <i>direct:entry</i> entry point and forwards them to <i>direct:endpoint</i>.
- * Route accepts messages containing String as a body, it aggregates the messages based on the settings and forwards
- * them as CSV to the output chanel.
+ * <p>It consumes messages out of the <i>direct:entry</i> entry point and forwards them to
+ * <i>direct:endpoint</i>. Route accepts messages containing String as a body, it aggregates the
+ * messages based on the settings and forwards them as CSV to the output chanel.
  *
- * Settings for the aggregation are: aggregate until 3 messages are bundled or wait 2000ms before sending bundled
- * messages further.
- * </p>
+ * <p>Settings for the aggregation are: aggregate until 3 messages are bundled or wait 2000ms
+ * before sending bundled messages further.
  *
- * In this example input/output endpoints names are stored in <i>application.properties</i> file.
+ * <p>In this example input/output endpoints names are stored in <i>application.properties</i>
+ * file.
  */
 @Component
 public class AggregatorRoute extends RouteBuilder {
@@ -48,7 +47,8 @@ public class AggregatorRoute extends RouteBuilder {
   private MessageAggregationStrategy aggregator;
 
   /**
-   * Configures the route
+   * Configures the route.
+   *
    * @throws Exception in case of exception during configuration
    */
   @Override

eip-aggregator/src/main/java/com/iluwatar/eip/aggregator/routes/MessageAggregationStrategy.java

@@ -28,8 +28,8 @@ import org.apache.camel.processor.aggregate.AggregationStrategy;
 import org.springframework.stereotype.Component;
 
 /**
- * Aggregation strategy joining bodies of messages. If message is first one <i>oldMessage</i> is null. All changes are
- * made on IN messages.
+ * Aggregation strategy joining bodies of messages. If message is first one <i>oldMessage</i> is
+ * null. All changes are made on IN messages.
  */
 @Component
 public class MessageAggregationStrategy implements AggregationStrategy {