Resolves checkstyle errors for dao data-bus data-locality data-mapper data-transfer-object decorator (#1067)

* Reduces checkstyle errors in dao

* Reduces checkstyle errors in data-bus

* Reduces checkstyle errors in data-locality

* Reduces checkstyle errors in data-mapper

* Reduces checkstyle errors in data-transfer-object

* Reduces checkstyle errors in decorator

data-mapper/src/main/java/com/iluwatar/datamapper/App.java

@@ -23,11 +23,10 @@
 
 package com.iluwatar.datamapper;
 
+import java.util.Optional;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.Optional;
-
 /**
  * The Data Mapper (DM) is a layer of software that separates the in-memory objects from the
  * database. Its responsibility is to transfer data between the two and also to isolate them from
@@ -35,19 +34,18 @@ import java.util.Optional;
  * present; they need no SQL interface code, and certainly no knowledge of the database schema. (The
  * database schema is always ignorant of the objects that use it.) Since it's a form of Mapper ,
  * Data Mapper itself is even unknown to the domain layer.
- * <p>
- * The below example demonstrates basic CRUD operations: Create, Read, Update, and Delete.
- * 
+ *
+ * <p>The below example demonstrates basic CRUD operations: Create, Read, Update, and Delete.
  */
 public final class App {
 
   private static Logger log = LoggerFactory.getLogger(App.class);
   private static final String STUDENT_STRING = "App.main(), student : ";
-  
+
 
   /**
    * Program entry point.
-   * 
+   *
    * @param args command line args.
    */
   public static void main(final String... args) {
@@ -81,5 +79,6 @@ public final class App {
     mapper.delete(student);
   }
 
-  private App() {}
+  private App() {
+  }
 }

data-mapper/src/main/java/com/iluwatar/datamapper/DataMapperException.java

@@ -26,9 +26,8 @@ package com.iluwatar.datamapper;
 /**
  * Using Runtime Exception for avoiding dependancy on implementation exceptions. This helps in
  * decoupling.
- * 
- * @author amit.dixit
  *
+ * @author amit.dixit
  */
 public final class DataMapperException extends RuntimeException {
 
@@ -39,7 +38,7 @@ public final class DataMapperException extends RuntimeException {
    * initialized, and may subsequently be initialized by a call to {@link #initCause}.
    *
    * @param message the detail message. The detail message is saved for later retrieval by the
-   *        {@link #getMessage()} method.
+   *                {@link #getMessage()} method.
    */
   public DataMapperException(final String message) {
     super(message);

data-mapper/src/main/java/com/iluwatar/datamapper/Student.java

@@ -23,11 +23,10 @@
 
 package com.iluwatar.datamapper;
 
-
 import java.io.Serializable;
 
 /**
- * Class defining Student
+ * Class defining Student.
  */
 public final class Student implements Serializable {
 
@@ -39,11 +38,11 @@ public final class Student implements Serializable {
 
 
   /**
-   * Use this constructor to create a Student with all details
+   * Use this constructor to create a Student with all details.
    *
    * @param studentId as unique student id
-   * @param name as student name
-   * @param grade as respective grade of student
+   * @param name      as student name
+   * @param grade     as respective grade of student
    */
   public Student(final int studentId, final String name, final char grade) {
     this.studentId = studentId;
@@ -51,57 +50,30 @@ public final class Student implements Serializable {
     this.grade = grade;
   }
 
-  /**
-   *
-   * @return the student id
-   */
   public int getStudentId() {
     return studentId;
   }
 
-  /**
-   *
-   * @param studentId as unique student id
-   */
   public void setStudentId(final int studentId) {
     this.studentId = studentId;
   }
 
-  /**
-   *
-   * @return name of student
-   */
   public String getName() {
     return name;
   }
 
-  /**
-   *
-   * @param name as 'name' of student
-   */
   public void setName(final String name) {
     this.name = name;
   }
 
-  /**
-   *
-   * @return grade of student
-   */
   public char getGrade() {
     return grade;
   }
 
-  /**
-   *
-   * @param grade as 'grade of student'
-   */
   public void setGrade(final char grade) {
     this.grade = grade;
   }
 
-  /**
- *
- */
   @Override
   public boolean equals(final Object inputObject) {
 
@@ -125,9 +97,6 @@ public final class Student implements Serializable {
     return isEqual;
   }
 
-  /**
- *
- */
   @Override
   public int hashCode() {
 
@@ -135,9 +104,6 @@ public final class Student implements Serializable {
     return this.getStudentId();
   }
 
-  /**
- *
- */
   @Override
   public String toString() {
     return "Student [studentId=" + studentId + ", name=" + name + ", grade=" + grade + "]";

data-mapper/src/main/java/com/iluwatar/datamapper/StudentDataMapper.java

@@ -26,7 +26,7 @@ package com.iluwatar.datamapper;
 import java.util.Optional;
 
 /**
- * Interface lists out the possible behaviour for all possible student mappers
+ * Interface lists out the possible behaviour for all possible student mappers.
  */
 public interface StudentDataMapper {
 

data-mapper/src/main/java/com/iluwatar/datamapper/StudentDataMapperImpl.java

@@ -28,7 +28,7 @@ import java.util.List;
 import java.util.Optional;
 
 /**
- * Implementation of Actions on Students Data
+ * Implementation of Actions on Students Data.
  */
 public final class StudentDataMapperImpl implements StudentDataMapper {
 
@@ -84,7 +84,8 @@ public final class StudentDataMapperImpl implements StudentDataMapper {
     } else {
 
       /* Throw user error after wrapping in a runtime exception */
-      throw new DataMapperException("Student already [" + studentToBeInserted.getName() + "] exists");
+      throw new DataMapperException("Student already [" + studentToBeInserted
+          .getName() + "] exists");
     }
   }