Day05-3 Connection을 이용한 db연결 만들기

dbConn 패키지에 ConnectionMaker 인터페이스 생성

package dbConn;

import java.sql.Connection;
// Connection 자바가 제공하는 데이터베이스와 연결하는 통신을 객체화한 것

// 컴퓨터와 데이터베이스의 연결 담당 메소드 모음
public interface ConnectionMaker {
    public Connection makeConnection();
}

MySqlConnectionMaker 자식 클래스 생성

package dbConn;

import java.sql.Connection;

public class MySqlConnectioMaker implements ConnectionMaker{
    private final String ADDRESS = "192.168.0.1";
    private final String USERNAME = "admin";
    private final String PASSWORD = "1111";
    @Override
    public Connection makeConnection() {
        System.out.println("MySQL 데이터베이스 연결 시도");
        System.out.println("연결 주소 : " + ADDRESS);
        System.out.println("아이디 : " + USERNAME);
        System.out.println("비밀번호 : " + PASSWORD);
        System.out.println("연결 성공");
        return null;
    }
}

package day0113;

import dbConn.ConnectionMaker;
import dbConn.MySqlConnectioMaker;

import java.sql.Connection;

public class Ex02Controller {
    public static void main(String[] args) {
        ConnectionMaker maker = new MySqlConnectioMaker();
        Connection connection = maker.makeConnection();

    }
}

OracleConnectionMaker 자식 클래스 생성 

package dbConn;

import java.sql.Connection;

public class OracleConnectionMaker implements ConnectionMaker{
    private final String ADDRESS = "192.168.0.2";
    private final String USERNAME = "ADMIN";
    private final String PASSWORD = "1234";
    @Override
    public Connection makeConnection() {
        System.out.println("오라클 데이터 베이스 연결 시도");
        System.out.println("오라클 주소: " + ADDRESS);
        System.out.println("오라클 아이디: " + USERNAME);
        System.out.println("오라클 비밀번호: " + PASSWORD);
        System.out.println("연결 성공");
        return null;
    }
}

package day0113;

import dbConn.ConnectionMaker;
import dbConn.MySqlConnectioMaker;

import java.sql.Connection;

public class Ex02Controller {
    public static void main(String[] args) {
        ConnectionMaker maker =  new OracleConnectionMaker(); 
        Connection connection = maker.makeConnection();

    }
}