Adding Code for BAEL-394 (#1163)

* Code for evaluation article

Article : Field vs. Constructor Injection

* Correct typo in attribute name

* Delete EbookRepositiry.java

* Add corrected class

* Update LibraryUtils.java

* Update Member.java

* Update Reservation.java

* Adding new file AccountServlet

* Adding new files for BAEL-394

* Add new files for BAEL-394

* Add new file for BAEL-394

* Indentation of annotations fixed

* Indentation of annotations fixed

* Indentation of annotations fixed

* Removing this class since it is not relevant

* New example added for @WebListener

spring-core/src/main/java/com/baeldung/Ebook.java

@@ -0,0 +1,20 @@
+package com.baeldung;
+
+public class Ebook {
+
+    private int bookId;
+    private String bookTitle;
+    
+    public int getBookId() {
+        return bookId;
+    }
+    public void setBookId(int bookId) {
+        this.bookId = bookId;
+    }
+    public String getBookTitle() {
+        return bookTitle;
+    }
+    public void setBookTitle(String bookTitle) {
+        this.bookTitle = bookTitle;
+    }
+}

spring-core/src/main/java/com/baeldung/EbookRepository.java

@@ -0,0 +1,5 @@
+package com.baeldung;
+
+public interface EbookRepository {
+    String titleById(int id);
+}

spring-core/src/main/java/com/baeldung/LibraryUtils.java

@@ -0,0 +1,12 @@
+package com.baeldung;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class LibraryUtils {
+    @Autowired
+    private EbookRepository eBookRepository;
+ 
+    public String findBook(int id) {
+        return eBookRepository.titleById(id);
+    }
+}

spring-core/src/main/java/com/baeldung/Member.java

@@ -0,0 +1,20 @@
+package com.baeldung;
+
+public class Member {
+
+    private int memberId;
+    private String memberName;
+    
+    public int getMemberId() {
+        return memberId;
+    }
+    public void setMemberId(int memberId) {
+        this.memberId = memberId;
+    }
+    public String getMemberName() {
+        return memberName;
+    }
+    public void setMemberName(String memberName) {
+        this.memberName = memberName;
+    }
+}

spring-core/src/main/java/com/baeldung/Reservation.java

@@ -0,0 +1,14 @@
+package com.baeldung;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class Reservation {
+    private Member member;
+    private Ebook eBook;
+    
+    @Autowired
+    public Reservation(Member member, Ebook eBook) {
+        this.member = member;
+        this.eBook = eBook;
+    }  
+}