design patterns : factory method - before

design-pattern/gof/src/FactoryMethod/before/Client.java

@@ -0,0 +1,13 @@
+package FactoryMethod.before;
+
+public class Client {
+
+    public static void main(String[] args) {
+        Ship whiteShip = ShipFactory.orderShip("WhiteShip", "keesun@mail.com");
+        System.out.println(whiteShip);
+
+        Ship blackShip = ShipFactory.orderShip("BlackShip", "keesun@mail.com");
+        System.out.println(blackShip);
+    }
+
+}

design-pattern/gof/src/FactoryMethod/before/Ship.java

@@ -0,0 +1,43 @@
+package FactoryMethod.before;
+
+public class Ship {
+
+    private String name;
+
+    private String color;
+
+    private String logo;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public void setColor(String color) {
+        this.color = color;
+    }
+
+    public String getLogo() {
+        return logo;
+    }
+
+    public void setLogo(String logo) {
+        this.logo = logo;
+    }
+
+    @Override
+    public String toString() {
+        return "Ship{" +
+                "name='" + name + '\'' +
+                ", color='" + color + '\'' +
+                ", logo='" + logo + '\'' +
+                '}';
+    }
+}

design-pattern/gof/src/FactoryMethod/before/ShipFactory.java

@@ -0,0 +1,47 @@
+package FactoryMethod.before;
+
+public class ShipFactory {
+
+    public static Ship orderShip(String name, String email) {
+        // validate
+        if (name == null || name.isEmpty()) {
+            throw new IllegalArgumentException("배 이름을 지어주세요.");
+        }
+        if (email == null || email.isEmpty()) {
+            throw new IllegalArgumentException("연락처를 남겨주세요.");
+        }
+
+        prepareFor(name);
+
+       Ship ship = new Ship();
+        ship.setName(name);
+
+        // Customizing for specific name
+        if (name.equalsIgnoreCase("whiteship")) {
+            ship.setLogo("\uD83D\uDEE5️");
+        } else if (name.equalsIgnoreCase("blackship")) {
+            ship.setLogo("⚓");
+        }
+
+        // coloring
+        if (name.equalsIgnoreCase("whiteship")) {
+            ship.setColor("whiteship");
+        } else if (name.equalsIgnoreCase("blackship")) {
+            ship.setColor("black");
+        }
+
+        // notify
+        sendEmailTo(email, ship);
+
+        return ship;
+    }
+
+    private static void prepareFor(String name) {
+        System.out.println(name + " 만들 준비 중");
+    }
+
+    private static void sendEmailTo(String email, Ship ship) {
+        System.out.println(ship.getName() + " 다 만들었습니다.");
+    }
+
+}