diff --git a/em-oop/src/BasicCheck1.java b/em-oop/src/BasicCheck1.java
index 7cb6a85..fe9958e 100644
--- a/em-oop/src/BasicCheck1.java
+++ b/em-oop/src/BasicCheck1.java
@@ -3,13 +3,15 @@ public class BasicCheck1 {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
-		Book book = new Book();
-		book.title = "吾輩は猫である";
-		book.author = "夏目漱石";
-		book.price = 800;
-		System.out.println(book.title);
-		System.out.println(book.author);
-		System.out.println(book.price);
+		Book book1 = new Book();
+		System.out.println(book1.title);
+		System.out.println(book1.author);
+		System.out.println(book1.price);
+		
+		Book book2 = new Book("銀河鉄道の夜","宮沢賢治",500);
+		System.out.println(book2.title);
+		System.out.println(book2.author);
+		System.out.println(book2.price);
 	}
 
 }
diff --git a/em-oop/src/Book.java b/em-oop/src/Book.java
index 685e22c..36a2c63 100644
--- a/em-oop/src/Book.java
+++ b/em-oop/src/Book.java
@@ -3,4 +3,16 @@ public class Book {
 	String title;
 	String author;
 	int price;
+	
+	public Book () {
+		title = "タイトル未設定";
+		author = "著者未設定";
+		price = 0;
+	}
+	
+	public Book(String title,String author,int price) {
+		this.title = title;
+		this.author = author;
+		this.price = price;
+	}
 }
\ No newline at end of file