자바 Vector연습예제

-Member

public class Member {
    private int num;
    String name;
    public Member(int num, String name) {
        this.num = num;
        this.name = name;
    }
    public int getNum() {
        return num;
    }
    public String toString() {
        return String.format("번호 : %d 이름 : %s", num, name);
    }
}

-Manager

import java.util.Scanner;
import java.util.Vector;
 
public class Manager {
    Scanner sc = new Scanner(System.in);
    Vector<Member> members = new Vector<Member>();
    public int selectMenu() {
        System.out.println("<학생 관리 프로그램> 다음 메뉴를 선택하세요.");
        System.out.println("[1]:추가 [2]:삭제 [3]:조회 [4]:목록 [0]:종료");
        int key = sc.nextInt();
        return key;
    }
    public void run() {
        int key = 0;
        while((key = selectMenu()) != 0) {
            switch(key) {
            case 1:
                addMember(); 
                break;
            case 2:
                delMember();
                break;
            case 3:
                searchMember();
                break;
            case 4:
                listMember();
                break;
            default:
                System.out.println("잘 못 입력하였습니다.");
            }
        }
    }
    public void addMember() {
        System.out.println("번호를 입력하세요 : ");
        int stuNum = Integer.parseInt(sc.nextLine());
        System.out.println("이름을 입력하세요 : ");
        String stuName = sc.nextLine();
        sc.nextLine();
        Member m = new Member(stuNum, stuName);
        members.add(m);
        System.out.println("정상적으로 추가 되었습니다.");
    }
    public void delMember() {
        System.out.println("삭제할 번호를 입력하세요 : ");
        int stu = Integer.parseInt(sc.nextLine());
        for(int i = 0; i < members.size(); i++) {
            if(stu == members.get(i).getStuNum()) {
                members.remove(i);
                System.out.println("삭제완료");
            }
        }        
    }
    public void searchMember() {
        System.out.println("검색할 학생 번호를 입력하세요 : ");
        int stu = Integer.parseInt(sc.nextLine());
        for(int i = 0; i < members.size(); i++) {
            if(stu == members.get(i).getStuNum()) {
                System.out.println(members.get(i));
                System.out.println("검색완료");
            }
        }    
    }
    public void listMember() {
        for (int i = 0; i < members.size(); i++) {             
            System.out.println(members.get(i));                     
        }
        System.out.println("검색완료");    
    }    
}

-Main

public class MemberMain {
    public static void main(String[] args) {
        Manager manager = new Manager();
        manager.run();
    }
}