Adjust checkstyle rules. Make checkstyle fail the build when violations are found. Correct all current checkstyle violations.

producer-consumer/src/main/java/com/iluwatar/producer/consumer/App.java

@@ -5,14 +5,12 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
 /**
- * Producer Consumer Design pattern is a classic concurrency or threading pattern which reduces
- * coupling between Producer and Consumer by separating Identification of work with Execution of
- * Work.
+ * Producer Consumer Design pattern is a classic concurrency or threading pattern which reduces coupling between
+ * Producer and Consumer by separating Identification of work with Execution of Work.
  * <p>
- * In producer consumer design pattern a shared queue is used to control the flow and this
- * separation allows you to code producer and consumer separately. It also addresses the issue of
- * different timing require to produce item or consuming item. by using producer consumer pattern
- * both Producer and Consumer Thread can work with different speed.
+ * In producer consumer design pattern a shared queue is used to control the flow and this separation allows you to code
+ * producer and consumer separately. It also addresses the issue of different timing require to produce item or
+ * consuming item. by using producer consumer pattern both Producer and Consumer Thread can work with different speed.
  * 
  */
 public class App {
@@ -20,7 +18,8 @@ public class App {
   /**
    * Program entry point
    * 
-   * @param args command line args
+   * @param args
+   *          command line args
    */
   public static void main(String[] args) {
 
@@ -35,7 +34,7 @@ public class App {
           producer.produce();
         }
       });
-    };
+    }
 
     for (int i = 0; i < 3; i++) {
       final Consumer consumer = new Consumer("Consumer_" + i, queue);

producer-consumer/src/main/java/com/iluwatar/producer/consumer/Consumer.java

@@ -14,6 +14,9 @@ public class Consumer {
     this.queue = queue;
   }
 
+  /**
+   * Consume item from the queue
+   */
   public void consume() throws InterruptedException {
 
     Item item = queue.take();

producer-consumer/src/main/java/com/iluwatar/producer/consumer/Producer.java

@@ -19,6 +19,9 @@ public class Producer {
     this.queue = queue;
   }
 
+  /**
+   * Put item in the queue
+   */
   public void produce() throws InterruptedException {
 
     Item item = new Item(name, itemId++);