３段階目

em-oop/src/BasicCheck2.java

@@ -1,15 +1,21 @@
 
 public class BasicCheck2 {
 	public static void main(String[] args) {
-		Student student = new Student(1,"鈴木一郎");
 		
-		student.studentId = 1;
+		Student student1 = new Student(1,"鈴木一郎");
-		student.name = "鈴木一郎";
+		Student student2 = new Student(2,"田中花子");
+		Student student3 = new Student(3,"佐藤次郎");
+		
+//		student.studentId = 1;
+//		student.name = "鈴木一郎";
 		
 //		System.out.print("学籍番号"+student.studentId);
 //		System.out.print("名前:" + student.name);
-		student.printProfile();
+		student1.printProfile();
+		student2.printProfile();
+		student3.printProfile();
 		
+		System.out.println("現在の生徒数:" + Student.getStudentCount() + "人");
 	}
 	
 }

em-oop/src/Student.java

@@ -2,11 +2,15 @@
 public class Student {
 	int studentId;
 	String name;
+	
+	static int studentCount = 0;
 		
 	public Student(int studentId, String name) {
 		this.studentId = studentId;
 		this.name = name;
 		
+		studentCount++;
+		
 	}
 
 	public void printProfile() {
@@ -17,7 +21,10 @@ public class Student {
 		//s.printProfile();
 		
 	//}
-	
+	public static int getStudentCount() {
+		return studentCount;
+		
+	}
 
 }