SOLID, Design Pattern 샘플 코드 추가 (#17)

* initial commit * feat : SOLID - SRP 샘플 코드 구현 * feat : SOLID - OCP 샘플 코드 구현 * feat : SOLID - LSP 샘플 코드 구현 * feat : SOLID - ISP 샘플 코드 구현 * feat : SOLID - DIP 샘플 코드 구현 * docs : README.md Design Pattern 항목 추가 * feat : Design Pattern - 전략(Strategy) 패턴 구현 * feat : Design Pattern - 템플릿 메서드(Template Method) 패턴 구현 * feat : Design Pattern - 상태(State) 패턴 구현 * feat : Design Pattern - 프록시(Proxy) 패턴 구현 * feat : Design Pattern - 어댑터(Adapter) 패턴 구현 * feat : Design Pattern - 옵저버(Observer) 패턴 구현 * feat : Design Pattern - 파사드(Facade) 패턴 구현 * feat : Design Pattern - 추상 팩토리 패턴(Abstract Factory) 패턴 구현 * feat : Design Pattern - 컴포지트(Composite) 패턴 구현 * feat : Design Pattern - 미디에이터(Mediator) 패턴 구현 * feat : Design Pattern - 널 객체(Null Object) 패턴 구현 * feat : Design Pattern - 데코레이터(Decorator) 패턴 구현
2022-11-16 01:36:13 +09:00
parent ec46451143
commit c6a8493aa3
185 changed files with 2913 additions and 0 deletions
--- a/작성)/solid-design-pattern-sample/.gitignore
+++ b/작성)/solid-design-pattern-sample/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
--- a/작성)/solid-design-pattern-sample/README.md
+++ b/작성)/solid-design-pattern-sample/README.md
@@ -0,0 +1,178 @@
+# SOLID & Design Pattern Sample
+
+## SOLID
+
+- SOLID 원칙들은 소프트웨어 작업에서 프로그래머가 소스 코드가 읽기 쉽고 확장하기 쉽게 될 때까지 소프트웨어 소스 코드를 리팩터링하여 코드 냄새를 제거하기 위해 적용할 수 있는 지침이다.
+- 각 항목별 before & after 를 비교하면서 어떤 차이가 있는지 생각해본다.
+- before & after 에 새로운, 또는 동일한 규칙(비즈니스 로직, 유효성 검사 등)을 적용해야 한다고 가정하고 변경을 시도해본다.
+
+### SRP(Single Responsibility Principle)
+
+- 단일 책임 원칙
+- 한 클래스는 하나의 책임만 가져야 한다. 즉, 한 클래스가 변경되는 이유는 한 가지여야 한다.
+
+#### 구현 요구사항
+
+- 예금주의 이름으로 계좌를 생성할 수 있다.
+- 계좌에 입금할 수 있다.
+- 계좌에서 출금할 수 있다.
+
+### OCP(Open/Closed Principle)
+
+- 개방-폐쇄 원칙
+- 소프트웨어 요소는 확장에는 열려 있으나 변경에는 닫혀 있어야 한다.
+
+#### 구현 요구사항
+
+- 최초의 결제방식은 현금, 카드 두 가지가 있다.
+- 쿠폰 결제방식을 추가한다고 가정한다.
+- 쿠폰으로 결제할 경우 잔고가 차감되지 않는다.
+
+### LSP(Liskov Substitution Principle)
+
+- 리스코프 치환 원칙
+- 프로그램의 객체는 프로그램의 정확성을 깨뜨리지 않으면서 하위 타입의 인스턴스로 바꿀 수 있어야 한다.
+
+#### 구현 요구사항
+
+- 좌표를 입력하면 해당 좌표로 이동수단의 위치가 변한다.
+
+### ISP(Interface Segregation Principle)
+
+- 인터페이스 분리 원칙
+- 특정 클라이언트를 위한 인터페이스 여러 개가 범용 인터페이스 하나보다 낫다.
+
+#### 구현 요구사항
+
+- 영화 상영관 좌석 현황을 조회할 수 있다.
+- 영화표 예매를 진행할 수 있다.
+
+### DIP(Dependency Inversion Principle)
+
+- 의존 역전 원칙
+- 프로그래머는 “추상화에 의존해야지, 구체화에 의존하면 안된다.” 의존성 주입은 이 원칙을 따르는 방법 중 하나다.
+
+#### 구현 요구사항
+
+- 저장소에서 파일 데이터를 불러올 수 있다.
+- 하나의 저장소만 사용하며 저장소의 타입은 언제든지 변경될 수 있다.
+- 각각의 저장소는 각자만의 파일 데이터 조회 요청 인터페이스를 제공한다.
+    - 아마존에서는 파일 이름을 요구한다.
+    - 구글에서는 파일 번호를 요구한다.
+
+## Design Pattern
+
+### 전략(Strategy) 패턴
+
+#### 구현 요구사항
+
+- 연령대별로 물건의 할인된 금액 계산기를 구현한다.
+    - 아이일 경우 할인율은 15%이다.
+    - 어른일 경우 할인율은 30%이다.
+
+### 템플릿 메서드(Template Method) 패턴
+
+#### 구현 요구사항
+
+- 스포츠 강사를 구현한다.
+    - 모든 강사는 강의가 시작할 때 스트레칭을 한다.
+    - 모든 강사는 강의가 끝날 때 인사한다.
+    - 수영 강사는 강의 중간에 수영 동작을 보여준다.
+    - 축구 강사는 강의 중간에 축구 동작을 보여준다.
+
+### 상태(State) 패턴
+
+#### 구현 요구사항
+
+- 상태별로 다르게 움직이는 게임 캐릭터를 구현한다.
+    - 기본적으로 게임 캐릭터는 정지상태이다.
+    - 정지 상태에서 버튼을 누르면 이동한다.
+    - 이동하는 상태에서 버튼을 누르면 점프한다.
+    - 점프하는 상태에서 버튼을 누르면 착지한 뒤 정지한다.
+    - 게임 캐릭터는 버튼을 누르면 동작하는 상태로 스스로의 상태를 변경한다.
+
+### 데코레이터(Decorator) 패턴
+
+#### 구현 요구사항
+
+- 용사는 검을 가진다.
+- 용사는 검을 바꿀 수 있다.
+- 검에는 속성이 부여될 수 있으며, 속성에 따라 공격이 변한다.
+- 용사가 공격하면 소지한 무기의 공격이 발동된다.
+
+### 프록시(Proxy) 패턴
+
+#### 구현 요구사항
+
+- 지갑의 주인은 지갑에 대해 입금 또는 출금을 진행할 수 있다.
+- 지갑의 동작은 입금 및 출금만 가능하도록 제한된다.
+- 지갑에 대해 입금 또는 출금이 이루어질 때 메시지를 출력한다.
+
+### 어댑터(Adapter) 패턴
+
+#### 구현 요구사항
+
+- 발전소는 정해진 요청 규격에 따라 전기를 생산한다.
+- 가정은 정해진 규격에 따라 전기를 얻는다.
+- 발전소와 가정에서 사용하는 전기는 각각 다르다.
+- 발전소에서 생산한 전기를 가정용으로 변환하는 계산식은 아래와 같다.
+    - 생산된 전류량 * (발전소 전압 / 가정용 전압)
+    - 발전소에서 생산한 전기의 전압은 11000V 이다.
+    - 가정에서 사용하는 전기의 전압은 220V 이다.
+
+### 옵저버(Observer) 패턴
+
+#### 구현 요구사항
+
+- 주문의 상태가 변경되면 배송팀과 운영팀에 알리고, 각각의 팀은 그에 따른 조치를 취한다.
+    - 배송팀은 배송을 시작한다.
+    - 운영팀은 고객에게 메시지를 전송한다.
+- 배송팀과 운영팀 외에 다른 팀에도 필요하다면 또 다른 팀에 메시지를 전송해야 할 수도 있다.
+
+### 미디에이터(Mediator) 패턴
+
+#### 구현 요구사항
+
+- 가전제품의 전원을 제어한다.
+- 가전제품의 전원은 하나만 켤 수 있고, 하나를 켜면 나머지는 모두 꺼진다.
+- 가전제품을 켤 경우, 해당 가전제품의 이름을 메시지로 전송한다.
+
+### 파사드(Facade) 패턴
+
+#### 구현 요구사항
+
+- 회원의 모든 정보를 조회한다.
+- 회원의 모든 정보에는 회원의 기본 정보와 친구들에 대한 정보가 있다.
+    - 회원의 기본 정보에는 이름, 나이가 있다.
+    - 회원의 친구 정보에는 친구의 이름, 나이가 있다.
+
+### 추상 팩토리(Abstract Factory) 패턴
+
+#### 구현 요구사항
+
+- 과일 이름을 입력하면 해당 과일 또는 과일주스를 만들어주는 마법이 있다.
+- 과일의 종류는 사과, 바나나, 오렌지로 총 세 가지다.
+- 과일주스의 종류도 마찬가지로 사과주스, 바나나주스, 오렌즈주스로 총 세 가지다.
+
+### 컴포지트(Composite) 패턴
+
+#### 구현 요구사항
+
+- 프랜차이즈 기업의 정산은 가맹점으로 가입된 모든 가게들의 정산을 포함한다.
+- 프랜차이즈 기업은 다른 프랜차이즈 기업을 포함할 수 있다.
+- 프랜차이즈 기업은 이름을 갖는다.
+- 프랜차이즈 가맹점은 이름을 갖는다.
+
+### 널 객체(Null Object) 패턴
+
+#### 구현 요구사항
+
+- 식당에서는 직원을 이름으로 관리하며 동명이인은 없다고 가정한다.
+- 이름으로 직원을 찾을 수 있고, 해당 직원에게 근무일자를 할당할 수 있다.
+- 직원은 근무일자를 고지 받으면 해당 날짜를 기억한다.
+
+## 참고자료
+
+- [SOLID (객체 지향 설계)](https://ko.wikipedia.org/wiki/SOLID_(%EA%B0%9D%EC%B2%B4_%EC%A7%80%ED%96%A5_%EC%84%A4%EA%B3%84)) 
+
+
--- a/작성)/solid-design-pattern-sample/build.gradle.kts
+++ b/작성)/solid-design-pattern-sample/build.gradle.kts
@@ -0,0 +1,39 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+	id("org.springframework.boot") version "2.7.5"
+	id("io.spring.dependency-management") version "1.0.15.RELEASE"
+	kotlin("jvm") version "1.6.21"
+	kotlin("plugin.spring") version "1.6.21"
+	kotlin("plugin.jpa") version "1.6.21"
+}
+
+group = "com.banjjoknim"
+version = "0.0.1-SNAPSHOT"
+java.sourceCompatibility = JavaVersion.VERSION_11
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation("org.springframework.boot:spring-boot-starter-data-jpa")
+	implementation("org.springframework.boot:spring-boot-starter-validation")
+	implementation("org.springframework.boot:spring-boot-starter-web")
+	implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
+	implementation("org.jetbrains.kotlin:kotlin-reflect")
+	implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
+	runtimeOnly("com.h2database:h2")
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+}
+
+tasks.withType<KotlinCompile> {
+	kotlinOptions {
+		freeCompilerArgs = listOf("-Xjsr305=strict")
+		jvmTarget = "11"
+	}
+}
+
+tasks.withType<Test> {
+	useJUnitPlatform()
+}
--- a/작성)/solid-design-pattern-sample/gradle/wrapper/gradle-wrapper.jar
+++ b/작성)/solid-design-pattern-sample/gradle/wrapper/gradle-wrapper.jar
--- a/작성)/solid-design-pattern-sample/gradle/wrapper/gradle-wrapper.properties
+++ b/작성)/solid-design-pattern-sample/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/작성)/solid-design-pattern-sample/gradlew
+++ b/작성)/solid-design-pattern-sample/gradlew
@@ -0,0 +1,240 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/작성)/solid-design-pattern-sample/gradlew.bat
+++ b/작성)/solid-design-pattern-sample/gradlew.bat
@@ -0,0 +1,91 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/작성)/solid-design-pattern-sample/settings.gradle.kts
+++ b/작성)/solid-design-pattern-sample/settings.gradle.kts
@@ -0,0 +1 @@
+rootProject.name = "solid-design-pattern-sample"
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/SolidDesignPatternSampleApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/SolidDesignPatternSampleApplication.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication
+class SolidDesignPatternSampleApplication
+
+fun main(args: Array<String>) {
+	runApplication<SolidDesignPatternSampleApplication>(*args)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/AppleMagic.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/AppleMagic.kt
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Apple
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.AppleJuice
+
+class AppleMagic : Magic {
+    override fun createFruit() {
+        val apple = Apple()
+        println("과일 [${apple.name}]를 만들었습니다!")
+    }
+
+    override fun createJuice() {
+        val appleJuice = AppleJuice()
+        println("과일주스 [${appleJuice.name}]을 만들었습니다!")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/BananaMagic.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/BananaMagic.kt
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Banana
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.BananaJuice
+
+class BananaMagic : Magic {
+    override fun createFruit() {
+        val banana = Banana()
+        println("과일 [${banana.name}]를 만들었습니다!")
+    }
+
+    override fun createJuice() {
+        val bananaJuice = BananaJuice()
+        println("과일주스 [${bananaJuice.name}]을 만들었습니다!")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/Magic.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/Magic.kt
@@ -0,0 +1,35 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.FruitType
+
+interface Magic {
+    companion object {
+        fun getMagic(fruitType: FruitType): Magic {
+            return when (fruitType) {
+                FruitType.APPLE -> AppleMagic()
+                FruitType.BANANA -> BananaMagic()
+                FruitType.ORANGE -> OrangeMagic()
+            }
+        }
+    }
+
+    fun createFruit()
+
+    fun createJuice()
+}
+
+//abstract class Magic {
+//    companion object {
+//        fun getMagic(fruitType: FruitType): Magic {
+//            return when (fruitType) {
+//                FruitType.APPLE -> AppleMagic()
+//                FruitType.BANANA -> BananaMagic()
+//                FruitType.ORANGE -> OrangeMagic()
+//            }
+//        }
+//    }
+//
+//    abstract fun createFruit()
+//
+//    abstract fun createJuice()
+//}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/MagicApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/MagicApplication.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.FruitType
+
+class MagicApplication
+
+fun main() {
+    val fruitType = FruitType.APPLE
+    val magic = Magic.getMagic(fruitType)
+    magic.createFruit()
+    magic.createJuice()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/OrangeMagic.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/after/OrangeMagic.kt
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Orange
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.OrangeJuice
+
+class OrangeMagic : Magic {
+    override fun createFruit() {
+        val orange = Orange()
+        println("과일 [${orange.name}]를 만들었습니다!")
+    }
+
+    override fun createJuice() {
+        val orangeJuice = OrangeJuice()
+        println("과일주스 [${orangeJuice.name}]을 만들었습니다!")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/before/Magic.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/before/Magic.kt
@@ -0,0 +1,29 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Apple
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.AppleJuice
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Banana
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.BananaJuice
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.FruitType
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.Orange
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.OrangeJuice
+
+class Magic {
+    fun createFruit(type: FruitType) {
+        val fruit = when (type) {
+            FruitType.APPLE -> Apple()
+            FruitType.BANANA -> Banana()
+            FruitType.ORANGE -> Orange()
+        }
+        println("과일 [${fruit.name}]를 만들었습니다!")
+    }
+
+    fun createJuice(type: FruitType) {
+        val juice = when (type) {
+            FruitType.APPLE -> AppleJuice()
+            FruitType.BANANA -> BananaJuice()
+            FruitType.ORANGE -> OrangeJuice()
+        }
+        println("과일주스 [${juice.name}]을 만들었습니다!")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/before/MagicApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/before/MagicApplication.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common.FruitType
+
+class MagicApplication
+
+fun main() {
+    val magic = Magic()
+    val fruitType = FruitType.APPLE
+    magic.createFruit(fruitType)
+    magic.createJuice(fruitType)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/FruitType.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/FruitType.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common
+
+enum class FruitType {
+    APPLE,
+    BANANA,
+    ORANGE
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/Fruits.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/Fruits.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common
+
+interface Fruit {
+    val name: String
+}
+
+data class Apple(override val name: String = "사과") : Fruit
+
+data class Banana(override val name: String = "바나나") : Fruit
+
+data class Orange(override val name: String = "오렌지") : Fruit
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/Juices.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/abstractfactory/common/Juices.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.abstractfactory.common
+
+interface Juice {
+    val name: String
+}
+
+data class AppleJuice(override val name: String = "사과주스") : Juice
+
+data class BananaJuice(override val name: String = "바나나주스") : Juice
+
+data class OrangeJuice(override val name: String = "오렌지주스") : Juice
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/ElectricService.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/ElectricService.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.HomeElectric
+
+interface ElectricService {
+    fun generateElectric(current: Int): HomeElectric
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/HomePowerStationElectricAdapter.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/HomePowerStationElectricAdapter.kt
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.HomeElectric
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.PowerStation
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.PowerStationElectricRequest
+
+class HomePowerStationElectricAdapter(
+    private val powerStation: PowerStation
+): ElectricService {
+    override fun generateElectric(current: Int): HomeElectric {
+        val powerStationElectricRequest = PowerStationElectricRequest(current)
+        val powerStationElectric = powerStation.generateElectric(powerStationElectricRequest)
+        return powerStationElectric.toHomeElectric()
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/PowerStationApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/after/PowerStationApplication.kt
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.Home
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.PowerStation
+
+class PowerStationApplication
+
+fun main() {
+    val powerStation = PowerStation()
+    val homePowerStationElectricAdapter = HomePowerStationElectricAdapter(powerStation)
+
+    val homeElectric = homePowerStationElectricAdapter.generateElectric(1000)
+
+    val home = Home()
+    home.takeElectric(homeElectric) // 가정은 발전소의 전기를 사용하는 클라이언트 역할을 한다.
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/before/PowerStationApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/before/PowerStationApplication.kt
@@ -0,0 +1,19 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.Home
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.PowerStation
+import com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common.PowerStationElectricRequest
+
+class PowerStationApplication
+
+fun main() {
+    val powerStation = PowerStation()
+
+    val electricRequest = PowerStationElectricRequest(1000)
+    val powerStationElectric = powerStation.generateElectric(electricRequest)
+
+    val homeElectric = powerStationElectric.toHomeElectric()
+
+    val home = Home()
+    home.takeElectric(homeElectric) // 가정은 발전소의 전기를 사용하는 클라이언트 역할을 한다.
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/Home.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/Home.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common
+
+class Home(
+    private var electric: HomeElectric = HomeElectric(0)
+) {
+    fun takeElectric(electric: HomeElectric) {
+        this.electric = electric
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/HomeElectric.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/HomeElectric.kt
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common
+
+data class HomeElectric(
+    val current: Int,
+)
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStation.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStation.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common
+
+class PowerStation {
+    fun generateElectric(request: PowerStationElectricRequest): PowerStationElectric {
+        return PowerStationElectric(request.current)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStationElectric.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStationElectric.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common
+
+data class PowerStationElectric(
+    val current: Int,
+) {
+    fun toHomeElectric(): HomeElectric {
+        return HomeElectric(this.current * (11000 / 220))
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStationElectricRequest.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/adapter/common/PowerStationElectricRequest.kt
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.adapter.common
+
+data class PowerStationElectricRequest(
+    val current: Int
+)
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeApplication.kt
@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.after
+
+class FranchiseeApplication
+
+fun main() {
+    val coffeeCorporation = FranchiseeCorporation("커피프린스")
+    coffeeCorporation.addStore(FranchiseeStore("1호점"))
+    coffeeCorporation.calculate()
+
+    println()
+    println("가맹점 정산을 완료했습니다.")
+    println()
+
+    val franchiseeCorporation = FranchiseeCorporation("모두의 프랜차이즈")
+    franchiseeCorporation.addStore(coffeeCorporation)
+    franchiseeCorporation.calculate()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeCorporation.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeCorporation.kt
@@ -0,0 +1,21 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.after
+
+class FranchiseeCorporation(
+    private val name: String,
+    private val stores: MutableList<Store> = mutableListOf()
+) : Store {
+    fun addStore(store: Store) {
+        stores.add(store)
+    }
+
+    fun removeStore(store: Store) {
+        stores.remove(store)
+    }
+
+    override fun calculate() {
+        for (store in stores) {
+            store.calculate()
+        }
+        println("프랜차이즈 기업 [$name]의 정산을 완료했습니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeStore.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/FranchiseeStore.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.after
+
+class FranchiseeStore(
+    val name: String
+) : Store {
+    override fun calculate() {
+        println("프랜차이즈 가게 [$name]이(가) 정산을 진행합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/Store.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/after/Store.kt
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.after
+
+interface Store {
+    fun calculate()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeApplication.kt
@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.before
+
+class FranchiseeApplication
+
+fun main() {
+    val coffeeCorporation = FranchiseeCorporation("커피프린스")
+    coffeeCorporation.addStore(FranchiseeStore("1호점"))
+    coffeeCorporation.calculateAllStores()
+
+    println()
+    println("가맹점 정산을 완료했습니다.")
+    println()
+
+    val franchiseeCorporation = FranchiseeCorporation("모두의 프랜차이즈")
+    franchiseeCorporation.addCorporation(coffeeCorporation)
+    franchiseeCorporation.calculateAllCorporations()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeCorporation.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeCorporation.kt
@@ -0,0 +1,37 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.before
+
+class FranchiseeCorporation(
+    private val name: String,
+    private val corporations: MutableList<FranchiseeCorporation> = mutableListOf(),
+    private val stores: MutableList<FranchiseeStore> = mutableListOf()
+) {
+    fun addCorporation(franchiseeCorporation: FranchiseeCorporation) {
+        corporations.add(franchiseeCorporation)
+    }
+
+    fun removeCorporation(franchiseeCorporation: FranchiseeCorporation) {
+        corporations.remove(franchiseeCorporation)
+    }
+
+    fun addStore(store: FranchiseeStore) {
+        stores.add(store)
+    }
+
+    fun removeStore(store: FranchiseeStore) {
+        stores.remove(store)
+    }
+
+    fun calculateAllCorporations() {
+        for (corporation in corporations) {
+            corporation.calculateAllStores()
+        }
+        println("프랜차이즈 기업 [$name]의 정산을 완료했습니다.")
+    }
+
+    fun calculateAllStores() {
+        for (store in stores) {
+            store.calculate()
+        }
+        println("프랜차이즈 기업 [$name]의 정산을 완료했습니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeStore.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/composite/before/FranchiseeStore.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.composite.before
+
+class FranchiseeStore(
+    val name: String
+) {
+    fun calculate() {
+        println("프랜차이즈 가게 [$name]이(가) 정산을 진행합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/Fire.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/Fire.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class Fire(private val sword: Sword) : SwordDecorator() {
+    override fun skill(): String {
+        return "불꽃 ${sword.skill()}"
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/HeroApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/HeroApplication.kt
@@ -0,0 +1,23 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Hero
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class HeroApplication
+
+fun main() {
+    val hero = Hero()
+    hero.attack()
+
+    val fireSword = Fire(Sword.DEFAULT)
+    hero.changeSword(fireSword)
+    hero.attack()
+
+    val iceSword = Ice(Sword.DEFAULT)
+    hero.changeSword(iceSword)
+    hero.attack()
+
+    val fireIceSword = Fire(Ice(Sword.DEFAULT))
+    hero.changeSword(fireIceSword)
+    hero.attack()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/Ice.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/Ice.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class Ice(private val sword: Sword) : SwordDecorator() {
+    override fun skill(): String {
+        return "얼음 ${sword.skill()}"
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/SwordDecorator.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/after/SwordDecorator.kt
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+abstract class SwordDecorator : Sword()
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/FireIceSword.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/FireIceSword.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class FireIceSword : Sword() {
+    override fun skill(): String {
+        return "화염 얼음 ${DEFAULT.skill()}"
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/FireSword.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/FireSword.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class FireSword : Sword() {
+    override fun skill(): String {
+        return "화염 ${DEFAULT.skill()}"
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/HeroApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/HeroApplication.kt
@@ -0,0 +1,22 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Hero
+
+class HeroApplication
+
+fun main() {
+    val hero = Hero()
+    hero.attack()
+
+    val fireSword = FireSword()
+    hero.changeSword(fireSword)
+    hero.attack()
+
+    val iceSword = IceSword()
+    hero.changeSword(iceSword)
+    hero.attack()
+
+    val fireIceSword = FireIceSword()
+    hero.changeSword(fireIceSword)
+    hero.attack()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/IceSword.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/before/IceSword.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common.Sword
+
+class IceSword : Sword() {
+    override fun skill(): String {
+        return "얼음 ${DEFAULT.skill()}"
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/common/Hero.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/common/Hero.kt
@@ -0,0 +1,14 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common
+
+class Hero(
+    private var sword: Sword = Sword.DEFAULT
+) {
+    fun changeSword(sword: Sword) {
+        this.sword = sword
+    }
+
+    fun attack() {
+        val swordSkill = sword.skill()
+        println("용사가 [$swordSkill]을 발동합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/common/Sword.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/decorator/common/Sword.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.decorator.common
+
+abstract class Sword {
+    abstract fun skill(): String
+
+    companion object {
+        val DEFAULT = object : Sword() {
+            override fun skill(): String {
+                return "참격"
+            }
+        }
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/InformationFinder.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/InformationFinder.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Information
+
+interface InformationFinder {
+    fun findInformation(): Information
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberApplication.kt
@@ -0,0 +1,16 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+
+class MemberApplication
+
+fun main() {
+    val memberFinder = MemberFinder()
+    val friendFinder = FriendFinder()
+
+    val memberInformationFinder = MemberInformationFinder(memberFinder, friendFinder)
+
+    val memberInformation = memberInformationFinder.findInformation()
+    println(memberInformation)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberInformationFinder.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/after/MemberInformationFinder.kt
@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Information
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberInformation
+
+class MemberInformationFinder(
+    private val memberFinder: MemberFinder,
+    private val friendFinder: FriendFinder,
+): InformationFinder {
+    override fun findInformation(): Information {
+        val member = memberFinder.findMember()
+        val friends = friendFinder.findFriends(member)
+        return MemberInformation(member, friends)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/before/MemberApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/before/MemberApplication.kt
@@ -0,0 +1,18 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.FriendFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberFinder
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.MemberInformation
+
+class MemberApplication
+
+fun main() {
+    val memberFinder = MemberFinder()
+    val friendFinder = FriendFinder()
+
+    val member = memberFinder.findMember()
+    val friends = friendFinder.findFriends(member)
+
+    val memberInformation = MemberInformation(member, friends)
+    println(memberInformation)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Friend.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Friend.kt
@@ -0,0 +1,6 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class Friend(
+    val name: String,
+    val age: Int
+)
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendFinder.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendFinder.kt
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Friend
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Member
+
+class FriendFinder {
+    fun findFriends(member: Member): List<Friend> {
+        return listOf(Friend("colt", 29))
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendInformation.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/FriendInformation.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class FriendInformation(
+    val name: String,
+    val age: Int
+) : Information {
+    constructor(friend: Friend) : this(
+        name = friend.name,
+        age = friend.age
+    )
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Information.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Information.kt
@@ -0,0 +1,3 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+interface Information
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Member.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/Member.kt
@@ -0,0 +1,6 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+class Member(
+    val name: String,
+    val age: Int
+)
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberFinder.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberFinder.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.facade.common.Member
+
+class MemberFinder {
+    fun findMember(): Member {
+        return Member("banjjoknim", 29)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberInformation.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/facade/common/MemberInformation.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.facade.common
+
+data class MemberInformation(
+    val memberName: String,
+    val memberAge: Int,
+    val friendsInformation: List<FriendInformation>
+): Information {
+    constructor(member: Member, friends: List<Friend>) : this(
+        memberName = member.name,
+        memberAge = member.age,
+        friendsInformation = friends.map { FriendInformation(it) }
+    )
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/AirConditioner.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/AirConditioner.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class AirConditioner(override val name: String) : HomeAppliance {
+    override fun turnOn() {
+        println("${name}을 켭니다.")
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeAppliance.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeAppliance.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+interface HomeAppliance {
+    val name: String
+
+    fun turnOn()
+
+    fun turnOff()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeApplianceApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeApplianceApplication.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class HomeApplianceApplication
+
+fun main() {
+    val airConditioner = AirConditioner("에어컨")
+    val television = Television("텔레비전")
+    val messageSender = MessageSender()
+    val remoteControl = RemoteControl(listOf(airConditioner, television), messageSender)
+
+    remoteControl.turnOn(airConditioner)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/MessageSender.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/MessageSender.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class MessageSender {
+    fun sendMessage(homeAppliance: HomeAppliance) {
+        println("메시지 : ${homeAppliance.name}을 켰습니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/RemoteControl.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/RemoteControl.kt
@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class RemoteControl(
+    private val homeAppliances: List<HomeAppliance>,
+    private val messageSender: MessageSender
+) {
+    fun turnOn(homeAppliance: HomeAppliance) {
+        homeAppliances.filterNot { it == homeAppliance }
+            .forEach { it.turnOff() }
+        homeAppliance.turnOn()
+        messageSender.sendMessage(homeAppliance)
+    }
+
+    fun turnOff(homeAppliance: HomeAppliance) {
+        homeAppliance.turnOff()
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/Television.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/Television.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class Television(override val name: String) : HomeAppliance {
+    override fun turnOn() {
+        println("${name}을 켭니다.")
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/AirConditioner.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/AirConditioner.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class AirConditioner(override val name: String) : HomeAppliance {
+    override fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender) {
+        homeAppliance.turnOff()
+        println("${name}을 켭니다.")
+        messageSender.sendMessage(this)
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeAppliance.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeAppliance.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+interface HomeAppliance {
+    val name: String
+
+    fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender)
+
+    fun turnOff()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeApplianceApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeApplianceApplication.kt
@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class HomeApplianceApplication
+
+fun main() {
+    val airConditioner = AirConditioner("에어컨")
+    val television = Television("텔레비전")
+    val messageSender = MessageSender()
+
+    airConditioner.turnOnBut(television, messageSender)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/MessageSender.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/MessageSender.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class MessageSender {
+    fun sendMessage(homeAppliance: HomeAppliance) {
+        println("메시지 : ${homeAppliance.name}을 켰습니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/Television.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/Television.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class Television(override val name: String) : HomeAppliance {
+    override fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender) {
+        homeAppliance.turnOff()
+        println("${name}을 켭니다.")
+        messageSender.sendMessage(this)
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/Employee.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/Employee.kt
@@ -0,0 +1,23 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.after
+
+interface Employee {
+    companion object {
+        val NOT_FOUND = object : Employee {
+            override val name: String
+                get() = "존재하지 않음"
+
+            override fun memorizeWorkingDays(workingDays: List<Int>) {
+                // 아무 작업도 하지 않는다.
+            }
+        }
+    }
+
+    val name: String
+    var workingDays: List<Int>
+        get() = listOf()
+        set(workingDays) {
+            memorizeWorkingDays(workingDays)
+        }
+
+    fun memorizeWorkingDays(workingDays: List<Int>)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/Restaurant.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/Restaurant.kt
@@ -0,0 +1,28 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.after
+
+class Restaurant(
+    private val employees: MutableList<Employee> = mutableListOf()
+) {
+    fun addEmployee(employee: Employee) {
+        employees.add(employee)
+    }
+
+    fun removeEmployee(employee: Employee) {
+        employees.remove(employee)
+    }
+
+    fun showAllEmployeesWorkingDays() {
+        for (employee in employees) {
+            println("${employee.name}의 근무일은 ${employee.workingDays}일 입니다.")
+        }
+    }
+
+    fun assignWorkingDays(workingDays: List<Int>, employeeName: String) {
+        val employee = findEmployee(employeeName)
+        employee.memorizeWorkingDays(workingDays)
+    }
+
+    private fun findEmployee(employeeName: String): Employee {
+        return employees.find { it.name == employeeName } ?: Employee.NOT_FOUND
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/RestaurantApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/RestaurantApplication.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.after
+
+class RestaurantApplication
+
+fun main() {
+    val restaurant = Restaurant()
+    restaurant.addEmployee(WorkingEmployee("banjjoknim"))
+
+    restaurant.assignWorkingDays(listOf(1, 4, 7, 14, 20, 27), "banjjoknim")
+    restaurant.assignWorkingDays(listOf(2, 5, 10, 17, 23, 29), "colt")
+
+    restaurant.showAllEmployeesWorkingDays()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/WorkingEmployee.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/after/WorkingEmployee.kt
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.after
+
+class WorkingEmployee(
+    override val name: String,
+    override var workingDays: List<Int> = listOf()
+) : Employee {
+    override fun memorizeWorkingDays(workingDays: List<Int>) {
+        this.workingDays = workingDays
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/Employee.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/Employee.kt
@@ -0,0 +1,25 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.before
+
+class Employee(
+    val name: String,
+    var workingDays: List<Int> = listOf()
+) {
+    fun memorizeWorkingDays(workingDays: List<Int>) {
+        this.workingDays = workingDays
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Employee
+
+        if (name != other.name) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        return name.hashCode()
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/Restaurant.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/Restaurant.kt
@@ -0,0 +1,30 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.before
+
+class Restaurant(
+    private val employees: MutableList<Employee> = mutableListOf()
+) {
+    fun addEmployee(employee: Employee) {
+        employees.add(employee)
+    }
+
+    fun removeEmployee(employee: Employee) {
+        employees.remove(employee)
+    }
+
+    fun showAllEmployeesWorkingDays() {
+        for (employee in employees) {
+            println("${employee.name}의 근무일은 ${employee.workingDays}일 입니다.")
+        }
+    }
+
+    fun assignWorkingDays(workingDays: List<Int>, employeeName: String) {
+        val employee = findEmployee(employeeName)
+        if (employee != null) {
+            employee.memorizeWorkingDays(workingDays)
+        }
+    }
+
+    private fun findEmployee(employeeName: String): Employee? {
+        return employees.find { it.name == employeeName }
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/RestaurantApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/nill/before/RestaurantApplication.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.nill.before
+
+class RestaurantApplication
+
+fun main() {
+    val restaurant = Restaurant()
+    restaurant.addEmployee(Employee("banjjoknim"))
+
+    restaurant.assignWorkingDays(listOf(1, 4, 7, 14, 20, 27), "banjjoknim")
+    restaurant.assignWorkingDays(listOf(2, 5, 10, 17, 23, 29), "colt")
+
+    restaurant.showAllEmployeesWorkingDays()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/DeliveryTeam.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/DeliveryTeam.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class DeliveryTeam : Team {
+    override val name: String
+        get() = "배송팀"
+
+    override fun onNotice(state: OrderState) {
+        println("$name : 주문이 ${state.description} 상태로 변경되었네요. 배송을 시작합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/ManageTeam.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/ManageTeam.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class ManageTeam : Team {
+    override val name: String
+        get() = "운영팀"
+
+    override fun onNotice(state: OrderState) {
+        println("$name : 주문이 ${state.description} 상태로 변경되었네요. 소비자에게 메시지를 전송합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/Order.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/Order.kt
@@ -0,0 +1,21 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class Order(
+    private var state: OrderState = OrderState.RECEIVED,
+    private val teams: MutableList<Team> = mutableListOf()
+) {
+    fun addTeam(team: Team) {
+        this.teams.add(team)
+    }
+
+    fun removeTeam(team: Team) {
+        this.teams.remove(team)
+    }
+
+    fun changeState(state: OrderState) {
+        this.state = state
+        teams.forEach { it.onNotice(state) }
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/OrderApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/OrderApplication.kt
@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class OrderApplication
+
+fun main() {
+    val order = Order()
+    order.addTeam(DeliveryTeam())
+    order.addTeam(ManageTeam())
+    order.changeState(OrderState.DELIVERY_READY_COMPLETE)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/Team.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/after/Team.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.after
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+interface Team {
+    val name: String
+
+    fun onNotice(state: OrderState)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/DeliveryTeam.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/DeliveryTeam.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class DeliveryTeam {
+    fun doDelivery(state: OrderState) {
+        println("배송팀 : 주문이 ${state.description} 상태로 변경되었네요. 배송을 시작합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/ManageTeam.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/ManageTeam.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class ManageTeam {
+    fun sendMessage(state: OrderState) {
+        println("운영팀 : 주문이 ${state.description} 상태로 변경되었네요. 소비자에게 메시지를 전송합니다.")
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/Order.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/Order.kt
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class Order(
+    private var state: OrderState = OrderState.RECEIVED,
+    private val deliveryTeam: DeliveryTeam,
+    private val manageTeam: ManageTeam
+) {
+    fun changeState(state: OrderState) {
+        this.state = state
+        deliveryTeam.doDelivery(state)
+        manageTeam.sendMessage(state)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/OrderApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/before/OrderApplication.kt
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.before
+
+import com.banjjoknim.soliddesignpatternsample.designpattern.observer.common.OrderState
+
+class OrderApplication
+
+fun main() {
+    val order = Order(state = OrderState.RECEIVED, DeliveryTeam(), ManageTeam())
+    order.changeState(OrderState.DELIVERY_READY_COMPLETE)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/common/OrderState.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/observer/common/OrderState.kt
@@ -0,0 +1,8 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.observer.common
+
+enum class OrderState(
+    val description: String
+) {
+    RECEIVED("접수됨"),
+    DELIVERY_READY_COMPLETE("배송 준비")
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ExtendsProxyWallet.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ExtendsProxyWallet(balance: Int) : RealWallet(balance) {
+    override fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        super.deposit(amount)
+    }
+
+    override fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        super.withdrawal(amount)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/ImplementsProxyWallet.kt
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ImplementsProxyWallet(
+    private val realWallet: RealWallet
+) : Wallet {
+    override fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        realWallet.deposit(amount)
+    }
+
+    override fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        realWallet.withdrawal(amount)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Owner.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class Owner(
+    private val wallet: Wallet
+) {
+    fun deposit(amount: Int) {
+        wallet.deposit(amount)
+    }
+
+    fun withdrawal(amount: Int) {
+        wallet.withdrawal(amount)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/RealWallet.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+open class RealWallet(
+    private var balance: Int = 0
+) : Wallet {
+    override fun deposit(amount: Int) {
+        this.balance += amount
+    }
+
+    override fun withdrawal(amount: Int) {
+        this.balance -= amount
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/Wallet.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+interface Wallet {
+    fun deposit(amount: Int)
+
+    fun withdrawal(amount: Int)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/after/WalletApplication.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.after
+
+class ProxyWalletApplication
+
+fun main() {
+    val wallet = ImplementsProxyWallet(RealWallet())
+    val owner = Owner(wallet)
+    owner.deposit(1000)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Owner.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class Owner(
+    private val wallet: Wallet
+) {
+    fun deposit(amount: Int) {
+        wallet.deposit(amount)
+    }
+
+    fun withdrawal(amount: Int) {
+        wallet.withdrawal(amount)
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/Wallet.kt
@@ -0,0 +1,15 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class Wallet(
+    private var balance: Int = 0
+) {
+    fun deposit(amount: Int) {
+        println("지갑에 $amount 원이 입금되었습니다.")
+        this.balance += amount
+    }
+
+    fun withdrawal(amount: Int) {
+        println("지갑에서 $amount 원이 출금되었습니다.")
+        this.balance -= amount
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/proxy/before/WalletApplication.kt
@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.proxy.before
+
+class WalletApplication
+
+fun main() {
+    val wallet = Wallet()
+    val owner = Owner(wallet)
+    owner.deposit(1000)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/GameCharacter.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/GameCharacter.kt
@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.after
+
+class GameCharacter(
+    private var state: State = StoppingState()
+) {
+    fun move() {
+        state.move(this)
+    }
+
+    fun changeState(newState: State) {
+        this.state = newState
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/GameCharacterApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/GameCharacterApplication.kt
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.after
+
+class GameCharacterApplicationAfter
+
+fun main() {
+    val gameCharacter = GameCharacter()
+    gameCharacter.move()
+    gameCharacter.move()
+    gameCharacter.move()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/State.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/State.kt
@@ -0,0 +1,5 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.after
+
+interface State {
+    fun move(gameCharacter: GameCharacter)
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/States.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/after/States.kt
@@ -0,0 +1,22 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.after
+
+class StoppingState : State {
+    override fun move(gameCharacter: GameCharacter) {
+        println("캐릭터가 이동한다.")
+        gameCharacter.changeState(MovingState())
+    }
+}
+
+class MovingState : State {
+    override fun move(gameCharacter: GameCharacter) {
+        println("캐릭터가 점프한다.")
+        gameCharacter.changeState(JumpingState())
+    }
+}
+
+class JumpingState : State {
+    override fun move(gameCharacter: GameCharacter) {
+        println("캐릭터가 착지한 뒤 정지한다.")
+        gameCharacter.changeState(StoppingState())
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/GameCharacter.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/GameCharacter.kt
@@ -0,0 +1,22 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.before
+
+class GameCharacter(
+    private var state: State = State.STOPPING
+) {
+    fun move() {
+        when (state) {
+            State.STOPPING -> {
+                println("캐릭터가 이동한다.")
+                this.state = State.MOVING
+            }
+            State.MOVING -> {
+                println("캐릭터가 점프한다.")
+                this.state = State.JUMPING
+            }
+            State.JUMPING -> {
+                println("캐릭터가 착지한 뒤 정지한다.")
+                this.state = State.STOPPING
+            }
+        }
+    }
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/GameCharacterApplication.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/GameCharacterApplication.kt
@@ -0,0 +1,10 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.before
+
+class GameCharacterApplicationBefore
+
+fun main() {
+    val gameCharacter = GameCharacter()
+    gameCharacter.move()
+    gameCharacter.move()
+    gameCharacter.move()
+}
--- a/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/State.kt
+++ b/작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/state/before/State.kt
@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.state.before
+
+enum class State {
+    STOPPING,
+    MOVING,
+    JUMPING,
+}
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`rootProject.name = "solid-design-pattern-sample"`