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

tolerant-reader/src/main/java/com/iluwatar/tolerantreader/App.java

@@ -19,6 +19,9 @@ import java.io.IOException;
  */
 public class App {
 
+  /**
+   * Program entry point
+   */
   public static void main(String[] args) throws IOException, ClassNotFoundException {
     // Write V1
     RainbowFish fishV1 = new RainbowFish("Zed", 10, 11, 12);

tolerant-reader/src/main/java/com/iluwatar/tolerantreader/RainbowFish.java

@@ -16,6 +16,9 @@ public class RainbowFish implements Serializable {
   private int lengthMeters;
   private int weightTons;
 
+  /**
+   * Constructor
+   */
   public RainbowFish(String name, int age, int lengthMeters, int weightTons) {
     this.name = name;
     this.age = age;

tolerant-reader/src/main/java/com/iluwatar/tolerantreader/RainbowFishSerializer.java

@@ -20,10 +20,6 @@ public class RainbowFishSerializer {
 
   /**
    * Write V1 RainbowFish to file
-   * 
-   * @param rainbowFish
-   * @param filename
-   * @throws IOException
    */
   public static void writeV1(RainbowFish rainbowFish, String filename) throws IOException {
     Map<String, String> map = new HashMap<>();
@@ -40,10 +36,6 @@ public class RainbowFishSerializer {
 
   /**
    * Write V2 RainbowFish to file
-   * 
-   * @param rainbowFish
-   * @param filename
-   * @throws IOException
    */
   public static void writeV2(RainbowFishV2 rainbowFish, String filename) throws IOException {
     Map<String, String> map = new HashMap<>();
@@ -63,11 +55,6 @@ public class RainbowFishSerializer {
 
   /**
    * Read V1 RainbowFish from file
-   * 
-   * @param filename
-   * @return
-   * @throws IOException
-   * @throws ClassNotFoundException
    */
   public static RainbowFish readV1(String filename) throws IOException, ClassNotFoundException {
     Map<String, String> map = null;

tolerant-reader/src/main/java/com/iluwatar/tolerantreader/RainbowFishV2.java

@@ -17,6 +17,9 @@ public class RainbowFishV2 extends RainbowFish {
     super(name, age, lengthMeters, weightTons);
   }
 
+  /**
+   * Constructor
+   */
   public RainbowFishV2(String name, int age, int lengthMeters, int weightTons, boolean sleeping,
       boolean hungry, boolean angry) {
     this(name, age, lengthMeters, weightTons);