2科目の成績の合計、平均点を出す。(クラスメソッド、インスタンス、コンストラクタありVer)

MainStudents.java

 public class MainStudents{
	public static void main(String[] args) {
		Students onuki = new Students();
		int onukiSum = onuki.sum(82,70);
		System.out.println("小貫の合計点は" + onukiSum);
		
		Students suzuki = new Students();
		int suzukiSum = suzuki.sum(85,74);
		System.out.println("鈴木の合計点は" + suzukiSum);
		
		Students yamada = new Students();
		int yamadaSum = yamada.sum(74,88);
		System.out.println("山田の合計点は" + yamadaSum);
		
		Students gotou = new Students();
		int gotouSum = gotou.sum(90,74);
		System.out.println("後藤の合計点は" + yamadaSum);
		
		Students ikeda = new Students();
		int ikedaSum = ikeda.sum(70,82);
		System.out.println("池田の合計点は" + ikedaSum);
		
		System.out.println("生徒の数は" + Students.count + "です。");
		
		System.out.println("国語の平均点は" + Students.jaavr / Students.count + "です");
		System.out.println("英語の平均点は" + Students.enavr / Students.count + "です");
		
		
	}
}

Students.java

public class Students{
	public int japanese;
	public int english;
	int sum;
	static int jaavr;
	static int enavr;
	//String name;
	static int count;
	
	
	public int sum(int japanese,int english){
		this.sum = japanese + english;
		jaavr += japanese;
		enavr += english;
		return sum;
	}

	public Students(){
		count++;
	}
}