diff --git a/team1/src/main/java/com/example/demo/entity/Book_collectionEntity.java b/team1/src/main/java/com/example/demo/entity/Book_collectionEntity.java
index c755eb6..bbedd27 100644
--- a/team1/src/main/java/com/example/demo/entity/Book_collectionEntity.java
+++ b/team1/src/main/java/com/example/demo/entity/Book_collectionEntity.java
@@ -1,5 +1,119 @@
 package com.example.demo.entity;
 
-public class Book_collectionEntity {
+import java.sql.Date;
 
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Table(name = "book_collection")
+@Entity
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Book_collectionEntity {
+	
+	
+	//蔵書ID
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id_book", nullable = false)
+	private Integer idBook;
+	
+	//ISBN
+	@Column(name = "isbn", nullable = false)
+	private String isBn;
+	
+	//書籍名
+	@Column(name = "nm_book", nullable = false)
+    private String nmBook;
+	
+	//書籍名よみ
+	@Column(name = "kn_book", nullable = true)
+    private String knBook;
+	
+	//出版社
+	@Column(name = "publisher", nullable = true)
+    private String pubLisher;
+	
+	//特記事項
+	@Column(name = "note text", nullable = true)
+    private String noteText;
+	
+	//貸出フラグ
+	@Column(name = "flg_lending", length = 1, nullable = false)
+    private String flgLending;
+	
+	//更新者
+	@Column(name = "id_update", nullable = false)
+    private Integer idUpdate;
+	
+	//更新日
+    @Column(name = "date_update", nullable = false)
+    private Date dateUpdate;
+    
+//	public static Book_collection convertFrom(Book_collection book_collection) {
+//    // 値を既に持ったインスタンスの生成に、コンストラクタを使用するとこうなります。
+//    return new Book_collection Entity(
+//            book_colletion.getIdBook(),
+//            book_colletion.getisBn(),
+//            book_colletion.getnmBook(),
+//            book_colletion..getknBook(),
+//            book_colletion.getpublisher(),
+//            book_colletion.getnoteText(),
+//            book_colletion.getflgLending(),
+//            book_colletion.getidUpdate(),
+//            book_colletion.getdateUupdate()
+//    );
+//
+//}
+//public static EmployeeEntity convertFrom(SearchConditionEmployee searchConditionEmployee) {
+//    EmployeeEntity employeeEntity = new EmployeeEntity();
+//
+//    employeeEntity.setIdBook(searchConditionEmployee.getIdBook());
+//    employeeEntity.setisBn(searchConditionEmployee.getisBn());
+//    employeeEntity.setnmBook(searchConditionEmployee.getnmBook());
+
+//    employeeEntity.setknBook(searchConditionEmployee.knBook());
+//    employeeEntity.setpublisher(searchConditionEmployee.getpublisher());
+//    employeeEntity.setnoteText(searchConditionEmployee.getnoteText());
+//    employeeEntity.setflgLending(searchConditionEmployee.getflgLending());
+//    employeeEntity.setidUpdate(searchConditionEmployee.getidUpdate());
+//  employeeEntity.setdateUpdate(searchConditionEmployee.getdateUupdate());
+    
+    
+//    
+////    public static List<book_collection> createbook_collectionList(List<EmployeeEntity> employeeEntityList) {
+////        return employeeEntityList.stream().map(EmployeeEntity::createbook_collection).toList();
+////    }
+//    
+//    List<book_collection> book_collectionList = new ArrayList<>();
+//    for(book_collectionEntity book_collectionEntity:employeeEntityList){
+//    	book_collection employee = book_collectionEntity.createbook_collection(book_collectionEntity);
+//    	book_collectionList.add(employee);
+//    }
+//    return employeeList;
+//    
+//    
+//    public LoginUser createLoginUser() {
+//        // 値を既に持ったインスタンスの生成に、コンストラクタを使用するとこうなります。
+//        return new LoginUser(
+//                getidBook(),
+//                getisBn(),
+//                getnmBook(),
+//                getknBook(),
+//                getpublisher(),
+//                getnoteText(),
+//                getflgLending(),
+//                getidUpdate(),
+//                getdateUpdate()
+//        );
+//    }
 }