diff --git a/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java b/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
index 7918841..e9dc852 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
@@ -3,12 +3,42 @@
 import org.ntlab.citrusserver.entities.Account;
 import org.ntlab.citrusserver.entities.Book;
 
+import java.util.ArrayList;
+
 public class PublicBookManager implements IBookListener{
 
+    private final BookManager bookManager;
+
+    public PublicBookManager(BookManager bookManager) {
+        this.bookManager = bookManager;
+    }
+
+    public ArrayList<Book> getAllPublicBooks(){
+        return null;
+    }
+
+    public ArrayList<Book> searchBooksByTitle(String title){
+        return null;
+    }
+
+    public ArrayList<Book> searchBooksByTitle(String title, int sortBy){
+        return null;
+    }
+
+    public ArrayList<Book> searchBooksByAccount(String accountId){
+        return null;
+    }
+
+    public ArrayList<Book> searchBooksByAccount(String accountId, int sortBy){
+        return null;
+    }
+
+    public ArrayList<Book> searchBooksByTitleAndAccount(String title, String accountId){
+        return null;
+    }
 
     @Override
     public void bookChanged(Account account, Book book) {
-
     }