학생관리 프로그램 MVC 패턴으로 나누기

Model 

Getter Setter 만 선언해준다

import java.util.Scanner;

public class Member {
	private int id;
	private String name;
	private int age;
	private String address;

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	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 String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

}

Controller

데이터를 조작하는 메소드및 Member[] 배열에 정보를 담음

public class MemberDao {
	Scanner scanner = new Scanner(System.in);
	Member[] member;
	FileClass fileClass;
	int id;
	String str = "";
	

	public MemberDao() {
		// TODO Auto-generated constructor stub
		member = new Member[10];
		for (int i = 0; i < member.length; i++) {
			member[i] = new Member();
			member[i].setId(-1);
		}
		str = "";
		id = 0;
	}

	public void insert() {
		member[this.id].setId(this.id);	
		System.out.println("이름을 입력하세요");
		String name = scanner.next();
		member[this.id].setName(name);
		System.out.println("나이를 입력하세요");
		int age = scanner.nextInt();
		member[this.id].setAge(age);
		System.out.println("주소를 입력하세요");
		String address = scanner.next();
		member[this.id].setAddress(address);
		this.id++;
	}

	public void delete() {
		System.out.println("삭제할 대상의 이름을 입력하세요");
		String name = scanner.next();

		int findIndex = -1;
		for (int i = 0; i < member.length; i++) {
			if (name.equals(member[i].getName())) {
				findIndex = i;
				break;
			}
		}
		member[findIndex].setName("");
		member[findIndex].setAddress("");
		member[findIndex].setAge(0);
		member[findIndex].setId(-1);

	}

	public void select() {
		System.out.println("검색할 대상의 이름을 입력하세요");
		String name = scanner.next();

		int findIndex = -1;
		for (int i = 0; i < member.length; i++) {
			if (name.equals(member[i].getName())) {
				findIndex = i;
				break;
			}
		}
		if (findIndex == -1) {
			System.out.println("검색할 대상을 찾을 수 없습니다");
		} else {
			System.out.println("id = " + member[findIndex].getId());
			System.out.println("name = " + member[findIndex].getName());
			System.out.println("age = " + member[findIndex].getAge());
			System.out.println("address = " + member[findIndex].getAddress());
			System.out.println("검색할 대상을 찾을 수 없습니다.");
		}

	}

	public void update() {
		System.out.println("업데이트 할  대상의 이름을 입력하세요");
		String name = scanner.next();
		int findIndex = -1;
		for (int i = 0; i < member.length; i++) {
			if (name.equals(member[i].getName())) {
				findIndex = i;
				break;
			}
		}
		if (findIndex == -1) {
			System.out.println("검색할 대상을 찾을 수 없습니다");
		} else {
			System.out.println("변경할 주소를 입력하세요");
			member[findIndex].setAddress(scanner.next());
			System.out.println("변경 완료!");
		}
	}
	
	public void allPrint() {
		for (int i = 0; i < member.length; i++) {
			if(member[i].getId() != -1) {
				System.out.println("==========================");
				System.out.println("id = " + member[i].getId());
				System.out.println("name = " + member[i].getName());
				System.out.println("age = " + member[i].getAge());
				System.out.println("address = " + member[i].getAddress());	
			}
			
		}
	}
   } 

 

View 

콘솔환경에서 Scanner scanner로 값을 받아서 MemberDao에 있는 메소드를 호출한다.

import java.util.Scanner;

public class mainClass {
	public static void main(String[] args) {
		MemberDao memberDao = new MemberDao();
		Scanner scanner = new Scanner(System.in);
		while(true) {
			System.out.println("1. 데이터 추가하기 ");
			System.out.println("2. 데이터 삭제하기");
			System.out.println("3. 데이터 업데이트 ");
			System.out.println("4. 데이터 전부 출력하기");
			int choice = scanner.nextInt();
			if(choice == 1) {
				memberDao.insert();
			} else if (choice == 2) {
				memberDao.delete();
			} else if (choice == 3) {
				memberDao.update();
			} else if (choice == 4) {
				memberDao.allPrint();
			} 
		}
	}
}