• Member

package ch07_fileQuiz;

import java.io.Serializable;

public class Member implements Serializable{
	
	private static final long serialVersionUID = 1L;
	private String name;
	private String phonenumber;
	
	public Member(String name, String phonenumber) {
		this.name=name;    this.phonenumber=phonenumber;
	}
	
	public String getname() {return name;}
	public void setname(String name) {this.name = name;}
	
	public String getphonenumber() {return phonenumber;}
	public void setphonenumber(String phonenumber) {this.phonenumber = phonenumber;}
	
	public String toString() {
		return name + " / " + phonenumber;
	}
}
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// MemberManager
package ch07_fileQuiz;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.EOFException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

/*
 * - 전화번호 목록 파일로 부터 데이터 가져와서 ArrayList에 저장해서 확인, 수정 추가.
 */

import java.util.Scanner;

public class MemberManager {
	private Scanner sc = new Scanner(System.in);
	private List <Member> list ;
	private File record;
	
	public MemberManager() throws IOException {
		list = new ArrayList<>();
		record = new File("/Users/simpangyo/FinTech_SPG/Member/Member.txt");

		if(record.exists() == false) {
			record.mkdir();
			record.createNewFile();
			System.out.println("폴더 생성.");
		}
	}
	
	public void insert() {
		System.out.println("--- 회 원  추 가 ---");
		System.out.print("이름 입력 > ");
		String addname = sc.next();
		Member man = FindName(addname);
		if( man != null) {
			System.out.println("이미 있는 회원입니다...");
		} else {
			System.out.print("전화번호 입력 > ");
			String addphonenumber = sc.next();
			list.add(new Member(addname, addphonenumber));
		}
		save();
	}
	
	public Member FindName(String name) {
		for(Member man : list) {
			if (man.getname().equals(name)) {
				return man;
			}
		}
		return null;
	}
	
	public void delete() {
		System.out.println("--- 회 원 삭 제 ---");
		System.out.print("삭제할 이름 입력 > ");
		String dname = sc.next();
		Member name = FindName(dname);
		if ( name == null) {
			System.out.println("이름을 잘못 입력하셨거나, 없는 회원입니다.");
		} else {
			list.remove(name);
			System.out.println(name + " 삭제 완료...");
		}
		save();
	}
	
	public void List() {
		System.out.println("-- 회 원 목 록 ---");
		for(Member man : list) {
			System.out.print(man + "\\n");
		}
		System.out.println();
		System.out.println("회원 수 : " + list.size());
	}
	
	public void modify() {
		System.out.println("--- 회 원 수 정 ---");
		System.out.print("변경 전 이름 입력 > ");
		String name = sc.next();
		Member mem = FindName(name);
		int idx = list.indexOf(mem);
		System.out.println(list.get(idx));
		if (mem == null) {
			System.out.println("이름을 잘못 입력하셨거나, 없는 회원입니다.");
		} else {
			System.out.print("변경 후 이름 입력 > ");
			String mname = sc.next();
			System.out.print("수정할 전화번호 입력 > ");
			String mphonenumber = sc.next();
			Member modi = new Member(mname,mphonenumber);
			list.set(idx, modi);
		}
		save();
	}
	
	public void config() {
		System.out.println("--- 회 원 확 인 ---");
		System.out.print("검색 이름 입력 > ");
		String search = sc.next();
		Member man = FindName(search);
		if(man !=null ){
			System.out.println(man);
		} else {
			System.out.println("없는 회원입니다...");
		}

	}
	
	public void save() {
		FileOutputStream fos = null;
		BufferedOutputStream bos = null;
		ObjectOutputStream oos = null;
		try {
			fos = new FileOutputStream(record);
			bos = new BufferedOutputStream(fos);
			oos = new ObjectOutputStream(bos);
			
			for(Member man : list) {
				oos.writeObject(man);
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if(oos != null) oos.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		System.out.println(record.getName() + " 저장 완료");
	}
	
	public void Load() throws IOException {
		if(record.length() == 0) return; // 파일에 기록된 데이터가 없으면 종료
		if(list != null) list.clear(); // 여러번 돌게 되면 한번 비워주고 로드.
		
		
		FileInputStream fis = null;
		BufferedInputStream bis = null;
		ObjectInputStream ois = null;
		
		try {
			fis = new FileInputStream(record);
			bis = new BufferedInputStream(fis);
			ois = new ObjectInputStream(bis);
			
			while(true) {
				Member member = (Member) ois.readObject();
				// readObject() 메서드가 읽어드릴 데이터가 없으면 EOFException 이 발생.
				list.add(member);
			}
			
		} catch (EOFException e) {
			try {
				if(ois != null) ois.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		} catch (Exception e) {
			
		}
		System.out.println(record.getName() + " 로드 성공");
	}
	
	public void end() {
		System.out.println("--- program end ---");
		System.exit(0);
	}
	
	
}
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//MemberMain
package ch07_fileQuiz;

import java.io.IOException;
import java.util.Scanner;

public class MemberMain {
	
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		MemberManager mm = new MemberManager();
		
		while(true) {
			System.out.print("1.추가 2.삭제 3.목록 4.수정 5.확인 6.저장 7.불러오기\\n> ");
			int select = sc.nextInt();
			switch(select) {
			case 1:
				mm.insert();
				break;
			case 2:
				mm.delete();
				break;
			case 3:
				mm.List();
				break;
			case 4:
				mm.modify();
				break;
			case 5:
				mm.config();
				break;
			case 6:
				mm.save();
				break;
			case 7:
				mm.Load();
				break;
			case 0:
				mm.end();
			default:
				System.out.println("값을 잘못 입력하셨습니다...");	
			}
			System.out.println();
		}	
	}
}