diff --git a/em-oop/src/BasicCheck1.java b/em-oop/src/BasicCheck1.java
index ffe91ae..6c7275c 100644
--- a/em-oop/src/BasicCheck1.java
+++ b/em-oop/src/BasicCheck1.java
@@ -4,6 +4,14 @@ 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 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 90f3238..902311d 100644
--- a/em-oop/src/Book.java
+++ b/em-oop/src/Book.java
@@ -1,4 +1,20 @@
 
 public class Book {
+	public String title;
+	public String author;
+	public int price;
+
+	//引数なしコンストラクタ
+	public Book() {
+		title = "タイトル未設定";
+		author = "著者未定";
+		price = ０;
+	}
+	//3つの引数を持つコンストラクタ
+	public Book(String title, String author, int price) {
+		this.title = title;
+		this.author = author;
+		this.price = price;
+	}
 
 }