From 15338b2b7001bc01763d202971c400c3b5b96479 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EB=8B=A4=ED=98=9C?= <dahye432111@gmail.com>
Date: Sat, 7 Mar 2020 00:16:07 +0900
Subject: [PATCH] =?UTF-8?q?1=EC=9E=A5:=20DAO=EC=9D=98=20=ED=99=95=EC=9E=A5?=
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전의 코드는 관계를 설정해주는 것에 대한 관심을 분리할 필요성이 있었다.
클라이언트에 해당 관심사의 책임을 맡김으로써 해결할 수 있다.

'런타임 시에 결정된다.'
---
 src/main/java/com/toby/tobyspring/MainTest.java         | 5 ++++-
 src/main/java/com/toby/tobyspring/user/dao/UserDao.java | 6 +++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/main/java/com/toby/tobyspring/MainTest.java b/src/main/java/com/toby/tobyspring/MainTest.java
index f50f762..ae961ee 100644
--- a/src/main/java/com/toby/tobyspring/MainTest.java
+++ b/src/main/java/com/toby/tobyspring/MainTest.java
@@ -1,5 +1,7 @@
 package com.toby.tobyspring;
 
+import com.toby.tobyspring.user.dao.ConnectionMaker;
+import com.toby.tobyspring.user.dao.DUserConnectionMaker;
 import com.toby.tobyspring.user.dao.UserDao;
 import com.toby.tobyspring.user.domain.User;
 
@@ -7,7 +9,8 @@
 
 public class MainTest {
     public static void main(String[] args) throws SQLException, ClassNotFoundException {
-        UserDao userDao = new UserDao();
+        ConnectionMaker connectionMaker = new DUserConnectionMaker();
+        UserDao userDao = new UserDao(connectionMaker);
 
         User user = new User();
         user.setId("dahyekim");
diff --git a/src/main/java/com/toby/tobyspring/user/dao/UserDao.java b/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
index 16bf155..f3fa713 100644
--- a/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
+++ b/src/main/java/com/toby/tobyspring/user/dao/UserDao.java
@@ -4,11 +4,11 @@
 
 import java.sql.*;
 
-public abstract class UserDao {
+public class UserDao {
     private ConnectionMaker connectionMaker;
 
-    public UserDao() {
-        this.connectionMaker = new DUserConnectionMaker();
+    public UserDao(ConnectionMaker connectionMaker) {
+        this.connectionMaker = connectionMaker;
     }
     public void add(User user) throws ClassNotFoundException, SQLException {
         Connection connection = connectionMaker.makeNewConnection();