Example of Builder Pattern

Author: dyriusdev

src/creational/builder_pattern/FerrariBuilder.java

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+package creational.builder_pattern;
+
+public class FerrariBuilder implements IVehicleBuilder {
+    private final Vehicle object = new Vehicle();
+
+    @Override
+    public void SetModel() {
+        object.model = "Ferrari 360";
+    }
+
+    @Override
+    public void SetEngine() {
+        object.engine = "4 Stroke";
+    }
+
+    @Override
+    public void SetTransmission() {
+        object.transmission = "280 Km/hr";
+    }
+
+    @Override
+    public void SetBody() {
+        object.body = "Glass Fiber";
+    }
+
+    @Override
+    public void SetAccessories() {
+        object.accessories.add("Seat Cover");
+        object.accessories.add("Rear Mirror");
+        object.accessories.add("Helmet");
+    }
+
+    @Override
+    public Vehicle GetVehicle() {
+        return object;
+    }
+}

src/creational/builder_pattern/HondaBuilder.java

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+package creational.builder_pattern;
+
+public class HondaBuilder implements IVehicleBuilder {
+
+    private final Vehicle object = new Vehicle();
+
+    @Override
+    public void SetModel() {
+        object.model = "Honda";
+    }
+
+    @Override
+    public void SetEngine() {
+        object.engine = "4 Stroke";
+    }
+
+    @Override
+    public void SetTransmission() {
+        object.transmission = "125 Km/hr";
+    }
+
+    @Override
+    public void SetBody() {
+        object.body = "Plastic";
+    }
+
+    @Override
+    public void SetAccessories() {
+        object.accessories.add("Seat Cover");
+        object.accessories.add("Rear Mirror");
+        object.accessories.add("Helmet");
+    }
+
+    @Override
+    public Vehicle GetVehicle() {
+        return object;
+    }
+}

src/creational/builder_pattern/IVehicleBuilder.java

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+package creational.builder_pattern;
+
+public interface IVehicleBuilder {
+
+    void SetModel();
+
+    void SetEngine();
+
+    void SetTransmission();
+
+    void SetBody();
+
+    void SetAccessories();
+
+    Vehicle GetVehicle();
+}

src/creational/builder_pattern/Test.java

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+package creational.builder_pattern;
+
+public class Test {
+
+    public static void main(String[] args) {
+        VehicleCreator ferrariCreator = new VehicleCreator(new FerrariBuilder());
+        ferrariCreator.CreateVehicle();
+        ferrariCreator.GetVehicle().ShowInfo();
+        System.out.println("--------------------------------------------------");
+        VehicleCreator hondaCreator = new VehicleCreator(new HondaBuilder());
+        hondaCreator.CreateVehicle();
+        hondaCreator.GetVehicle().ShowInfo();
+    }
+}

src/creational/builder_pattern/Vehicle.java

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+package creational.builder_pattern;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Vehicle {
+
+    public String model, engine, transmission, body;
+    public List<String> accessories;
+
+    public Vehicle() {
+        accessories = new ArrayList<>();
+    }
+
+    public void ShowInfo() {
+        System.out.printf("Model : %s\nEngine : %s\nBody : %s\nTransmission : %s\nAccessories : %s\n", model, engine, body, transmission, accessories);
+    }
+}

src/creational/builder_pattern/VehicleCreator.java

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+package creational.builder_pattern;
+
+public class VehicleCreator {
+
+    private final IVehicleBuilder builder;
+
+    public VehicleCreator(IVehicleBuilder build) {
+        builder = build;
+    }
+
+    public void CreateVehicle() {
+        builder.SetModel();
+        builder.SetEngine();
+        builder.SetBody();
+        builder.SetTransmission();
+        builder.SetAccessories();
+    }
+
+    public Vehicle GetVehicle() {
+        return builder.GetVehicle();
+    }
+}