diff --git a/src/main/java/org/ntlab/citrusserver/entities/Book.java b/src/main/java/org/ntlab/citrusserver/entities/Book.java
index 1bbf11e..fb612e1 100644
--- a/src/main/java/org/ntlab/citrusserver/entities/Book.java
+++ b/src/main/java/org/ntlab/citrusserver/entities/Book.java
@@ -1,4 +1,23 @@
 package org.ntlab.citrusserver.entities;
 
 public class Book {
+
+    private String title;
+    private boolean publicity;
+    private String color;
+    private int bookId;
+    private int todoId = 0;
+
+    public void setTitle(String t) {title = t;}
+    public String getTitle() {return title;}
+    public void setPublicity(boolean p) {publicity = p;}
+    public boolean getPublicity() {return publicity;}
+    public void setColor(String c) {color = c;}
+    public String getColor() {return color;}
+    public void setBookId(int id) {bookId = id;}
+    public int getBookId() {return bookId;}
+    public int getTodoId() {
+        todoId += 1;
+        return todoId;
+    }
 }