diff --git a/em-oop/src/BasicCheck2.java b/em-oop/src/BasicCheck2.java
index 179ea98..d38a7d1 100644
--- a/em-oop/src/BasicCheck2.java
+++ b/em-oop/src/BasicCheck2.java
@@ -3,12 +3,19 @@ public class BasicCheck2 {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
-		Student student = new Student();
 		
-		student.studentId=1;
-		student.name="鈴木一郎";
-				
-		student.printProfile();
+		//コンストラクタを使ってインスタンスを作成
+		Student student1 = new Student(1,"鈴木一郎");
+		Student student2 = new Student(2,"田中花子");
+		Student student3 = new Student(3,"佐藤次郎");
+		
+		//メソッド呼び出し
+		student1.printProfile();
+		student2.printProfile();
+		student3.printProfile();
+		
+		//クラスから直接呼び出し
+		System.out.println("現在の生徒数" +Student.getStudentCount() + "人");
 	}
 
 }
diff --git a/em-oop/src/Student.java b/em-oop/src/Student.java
index ea154eb..5f7eac7 100644
--- a/em-oop/src/Student.java
+++ b/em-oop/src/Student.java
@@ -1,8 +1,23 @@
 
 public class Student {
+		//変数を作る
 		int studentId;
 		String name;
 		
+		//フィールド追加
+		static int studentCount = 0;
+		//コンストラクタ追加
+		public Student(int studentId,String name) {
+			this.studentId = studentId;
+			this.name = name;
+			studentCount++;
+		}
+		
+		//メソッド追加
+		public static int getStudentCount() {
+			return studentCount;
+		}
+		//メソッド
 		public void printProfile() {
 		System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);