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package addressBook;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Scanner;
public class ADD {
/*변수선언*/
static String fileName = "Address.txt";
static String name = null;
static String number = null;
static String temp = "";
static boolean check = false;
static HashMap<String, String> addList = new HashMap<String, String>();
/*메뉴 번호를 선택*/
public static void MenuChoice() throws IOException {
Scanner sc = new Scanner(System.in);
int a;
do {
System.out.println("\n*+*+*+*+*+[MENU]+*+*+*+*+*+");
System.out.println("\t[1] 연락처 등록\n\t[2] 연락처 출력\n\t[3] 연락처 삭제\n\t[4] 끝내기");
System.out.println("*+*+*+*+*+*+*+*+*+*+*+*+*+*");
a = sc.nextInt();
switch (a) {
case 1: {
input();break;
}
case 2: {
output();break;
}
case 3: {
delete();break;
}
default:
if (a > 4)
System.out.println("[" + a + "]" + "번은 없는 메뉴 입니다.");
break;
}
} while (a != 4);
System.out.println("[4]. 종료합니다.");
}
/*등룍*/
private static void input() throws IOException {
BufferedWriter bw = new BufferedWriter(new FileWriter(fileName, true));
Scanner sc = new Scanner(System.in);
System.out.print("추가하실 이름:");
name = sc.next();
bw.write(name + "\n");
System.out.print("추가하실 번호:");
number = sc.next();
bw.write(number + "\n");
addList.put(name, number); //이름이랑 번호를 HashMap에 저장
bw.close();
}
/*삭제*/
private static void delete() throws IOException {
BufferedReader br = new BufferedReader(new FileReader(fileName));
Scanner sc = new Scanner(System.in);
System.out.print("삭제하실 이름 : ");
name = sc.next();
while (true) {
number = br.readLine();
if (number == null) {
break;
}
if (number.equals(name)) {
check = true;
continue;
}
temp += number + "\n";
}
br.close();
if (check) {
BufferedWriter bwe = new BufferedWriter(new FileWriter(fileName));
bwe.write(temp);
addList.remove(name);
bwe.close();
System.out.println("\t[삭제 성공]");
} else {
System.out.println("\t[삭제 실패]");
}
}
/*출력*/
private static void output() throws IOException {
BufferedReader br = new BufferedReader(new FileReader(fileName));
Scanner sc = new Scanner(System.in);
Object[] keylist = addList.keySet().toArray(); //Hashmap에 있는 정보 모두 출력
for (int i = 0; i < keylist.length; i++) {
String k = (String) keylist[i];
System.out.print("[ " + (i + 1) + "번 ] ");
System.out.print(k + " : ");
System.out.println((String) addList.get(k));
}if( keylist.length==0)
System.out.println("!!주소록이 비었습니다!!");
}
/*메인*/
public static void main(String[] args) throws IOException {
MenuChoice();
} |
cs |
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