MVC모델(수정필요)

DAO

package MVC.dao;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.Set;

import MVC.dto.StudentVO;


public class ScoreDAO {
	//국영수
	public final int SUBJECT_SIZE = 3;
	public Scanner sc = new Scanner(System.in);
	private ArrayList<StudentVO> arStudent = null;
	private ArrayList<Integer> arScore = null; 
//	과목이 더 추가될수도 있기 떄문에 동적인 ArrayList가 나와줌 ★★
//	매번 초기화 되어야 하기때문에 null을 줌
	private HashMap<StudentVO, ArrayList<Integer>> smsMap = new HashMap<>();
	
	public void join() {
		String isQuit = "";
		do {
		 System.out.println("============[학생정보 입력(종료는 q)]============");
		 System.out.println("이름 :");
		 String name = sc.nextLine();
		 System.out.println("나이 :");
		 int age = sc.nextInt();
		 StudentVO std = new StudentVO(name, age);
		 arStudent = new ArrayList<>();
		 arScore = new ArrayList<>();
		 
		 arStudent.add(std);
		 System.out.println("국어 영어 수학 점수를 입력하세요.\n");

		 for (int i = 0; i < SUBJECT_SIZE; i++) {
			 arScore.add(Integer.parseInt(sc.next()));
		 }
		 smsMap.put(std, arScore);
		 System.out.println("종료?");
		 sc.nextLine();	// 점수 입력 후 엔터 상쇄
		 isQuit = sc.nextLine();
		}while(isQuit.intern() != "q");
	}
		 
	
	public void list(HashMap<StudentVO, ArrayList<Integer>> db) {
		System.out.println("=====[가입목록]=====");
		Set<Entry<StudentVO, ArrayList<Integer>>> set = db.entrySet();
		Iterator<Map.Entry<StudentVO, ArrayList<Integer>>> iter = set.iterator();
		
		while(iter.hasNext()) {
			iter.next().getKey().show();
		}
	}
	
	public void search() {
		
	}
	
	public void update() {
		
	}

	public void delete() {
		
	}
}

DTO

package MVC.dto;

import MVC.dao.Student;

public class StudentVO implements Student{
	private String name;
	private int age;
	private int number;
	private static int seq;
	
	public StudentVO() {;}

	public StudentVO(String name, int age) {
		this.name = name;
		this.age = age;
		this.number = ++seq;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public int getNumber() {
		return number;
	}
	
	public void show() {
		System.out.println("번호 : " + this.number + "/이름 : " + name + "/나이 : " + age + "살"
	);
	}
	

}

VIEW

package MVC.view;

import MVC.dao.ScoreDAO;

public class View {
	public static void main(String[] args) {
		new ScoreDAO().join();
	}
}