From a75273882dcb73ecf6060427b1cb6b650988257b Mon Sep 17 00:00:00 2001
From: kim <haerong22@naver.com>
Date: Tue, 12 Jan 2021 16:36:50 +0900
Subject: [PATCH] Builder Pattern

---
 design-pattern/src/Builder/Blueprint.java     | 10 +++++
 design-pattern/src/Builder/Builder            |  3 ++
 design-pattern/src/Builder/Computer.java      | 43 +++++++++++++++++++
 .../src/Builder/ComputerFactory.java          | 18 ++++++++
 .../src/Builder/LgGramBlueprint.java          | 33 ++++++++++++++
 design-pattern/src/Builder/Main.java          | 13 ++++++
 6 files changed, 120 insertions(+)
 create mode 100644 design-pattern/src/Builder/Blueprint.java
 create mode 100644 design-pattern/src/Builder/Builder
 create mode 100644 design-pattern/src/Builder/Computer.java
 create mode 100644 design-pattern/src/Builder/ComputerFactory.java
 create mode 100644 design-pattern/src/Builder/LgGramBlueprint.java
 create mode 100644 design-pattern/src/Builder/Main.java

diff --git a/design-pattern/src/Builder/Blueprint.java b/design-pattern/src/Builder/Blueprint.java
new file mode 100644
index 00000000..167577e2
--- /dev/null
+++ b/design-pattern/src/Builder/Blueprint.java
@@ -0,0 +1,10 @@
+package Builder;
+
+public abstract class Blueprint {
+
+    abstract public Computer getComputer();
+    abstract public void setCpu();
+    abstract public void setRam();
+    abstract public void setStorage();
+
+}
diff --git a/design-pattern/src/Builder/Builder b/design-pattern/src/Builder/Builder
new file mode 100644
index 00000000..d08e57c4
--- /dev/null
+++ b/design-pattern/src/Builder/Builder
@@ -0,0 +1,3 @@
+Builder Pattern
+ - 복잡한 단계가 필요한 인스턴스 생성을 빌드 패턴을 통해서 구현
+ - 복잡한 단계를 거쳐야 생성되는 객체의 구현을 서브 클래스에게 넘겨주는 패턴
\ No newline at end of file
diff --git a/design-pattern/src/Builder/Computer.java b/design-pattern/src/Builder/Computer.java
new file mode 100644
index 00000000..c145243f
--- /dev/null
+++ b/design-pattern/src/Builder/Computer.java
@@ -0,0 +1,43 @@
+package Builder;
+
+public class Computer {
+
+    private String cpu;
+    private String ram;
+    private String storage;
+
+    @Override
+    public String toString() {
+        return cpu + ", " + ram + ", " + storage;
+    }
+
+    public Computer(String cpu, String ram, String storage) {
+        this.cpu = cpu;
+        this.ram = ram;
+        this.storage = storage;
+    }
+
+    public String getCpu() {
+        return cpu;
+    }
+
+    public void setCpu(String cpu) {
+        this.cpu = cpu;
+    }
+
+    public String getRam() {
+        return ram;
+    }
+
+    public void setRam(String ram) {
+        this.ram = ram;
+    }
+
+    public String getStorage() {
+        return storage;
+    }
+
+    public void setStorage(String storage) {
+        this.storage = storage;
+    }
+}
diff --git a/design-pattern/src/Builder/ComputerFactory.java b/design-pattern/src/Builder/ComputerFactory.java
new file mode 100644
index 00000000..2a09f604
--- /dev/null
+++ b/design-pattern/src/Builder/ComputerFactory.java
@@ -0,0 +1,18 @@
+package Builder;
+
+public class ComputerFactory {
+
+    private Blueprint blueprint;
+
+    public void setBlueprint(Blueprint blueprint) {
+        this.blueprint = blueprint;
+    }
+
+    public Computer makeAndGet() {
+        blueprint.setRam();
+        blueprint.setCpu();
+        blueprint.setStorage();
+        return blueprint.getComputer();
+    }
+}
+ 
\ No newline at end of file
diff --git a/design-pattern/src/Builder/LgGramBlueprint.java b/design-pattern/src/Builder/LgGramBlueprint.java
new file mode 100644
index 00000000..f3d0f857
--- /dev/null
+++ b/design-pattern/src/Builder/LgGramBlueprint.java
@@ -0,0 +1,33 @@
+package Builder;
+
+public class LgGramBlueprint extends Blueprint {
+
+    private Computer computer;
+
+
+    public LgGramBlueprint() {
+        this.computer = new Computer("default", "default", "default");
+    }
+
+    @Override
+    public Computer getComputer() {
+        return computer;
+    }
+
+    @Override
+    public void setCpu() {
+        computer.setCpu("i7");
+    }
+
+    @Override
+    public void setRam() {
+        computer.setRam("8g");
+    }
+
+    @Override
+    public void setStorage() {
+        computer.setStorage("256g ssd");
+    }
+
+
+}
diff --git a/design-pattern/src/Builder/Main.java b/design-pattern/src/Builder/Main.java
new file mode 100644
index 00000000..f64a99c6
--- /dev/null
+++ b/design-pattern/src/Builder/Main.java
@@ -0,0 +1,13 @@
+package Builder;
+
+public class Main {
+
+    public static void main(String[] args) {
+
+        ComputerFactory factory = new ComputerFactory();
+        factory.setBlueprint(new LgGramBlueprint());
+        Computer computer = factory.makeAndGet();
+
+        System.out.println(computer.toString());
+    }
+}