Builder

src/main/java/com/dongho/df/domain/creational/builder/pizza/HawaiianPizzaBuilder.java

@@ -0,0 +1,20 @@
+package com.dongho.df.domain.creational.builder.pizza;
+
+public class HawaiianPizzaBuilder extends PizzaBuilder {
+
+    @Override
+    public void buildDough() {
+        pizza.setDough("cross");
+    }
+
+    @Override
+    public void buildSause() {
+        pizza.setSause("mild");
+    }
+
+    @Override
+    public void buildTopping() {
+        pizza.setTopping("ham + pineapple");
+    }
+
+}

src/main/java/com/dongho/df/domain/creational/builder/pizza/Pizza.java

@@ -0,0 +1,32 @@
+package com.dongho.df.domain.creational.builder.pizza;
+
+public class Pizza {
+
+    private String dough = "";
+    private String sause = "";
+    private String topping = "";
+
+    public void setDough(String dough) {
+        this.dough = dough;
+    }
+
+    public void setSause(String sause) {
+        this.sause = sause;
+    }
+
+    public void setTopping(String topping) {
+        this.topping = topping;
+    }
+
+    public String getDough() {
+        return dough;
+    }
+
+    public String getSause() {
+        return sause;
+    }
+
+    public String getTopping() {
+        return topping;
+    }
+}

src/main/java/com/dongho/df/domain/creational/builder/pizza/PizzaBuilder.java

@@ -0,0 +1,27 @@
+package com.dongho.df.domain.creational.builder.pizza;
+
+public abstract class PizzaBuilder {
+
+    protected Pizza pizza;
+
+    public PizzaBuilder() {
+        pizza = new Pizza();
+    }
+
+    public Pizza getPizza() {
+        return pizza;
+    }
+
+    public void buildDough() {
+
+    }
+
+    public void buildSause() {
+
+    }
+
+    public void buildTopping() {
+
+    }
+
+}

src/main/java/com/dongho/df/domain/creational/builder/pizza/PizzaDirector.java

@@ -0,0 +1,21 @@
+package com.dongho.df.domain.creational.builder.pizza;
+
+public class PizzaDirector {
+
+    private PizzaBuilder pizzaBuilder;
+
+    public void setPizzaBuilder(PizzaBuilder pizzaBuilder) {
+        this.pizzaBuilder = pizzaBuilder;
+    }
+
+    public Pizza getPizza() {
+        return pizzaBuilder.getPizza();
+    }
+
+    public void constructPizza() {
+        pizzaBuilder.buildDough();
+        pizzaBuilder.buildSause();
+        pizzaBuilder.buildTopping();
+    }
+
+}

src/main/java/com/dongho/df/domain/creational/builder/pizza/SpicyPizzaBuilder.java

@@ -0,0 +1,20 @@
+package com.dongho.df.domain.creational.builder.pizza;
+
+public class SpicyPizzaBuilder extends PizzaBuilder {
+
+    @Override
+    public void buildDough() {
+        pizza.setDough("pan baked");
+    }
+
+    @Override
+    public void buildSause() {
+        pizza.setSause("hot");
+    }
+
+    @Override
+    public void buildTopping() {
+        pizza.setTopping("pepperoni + salami");
+    }
+
+}

src/test/java/com/dongho/df/domain/creational/builder/BuilderTest.java

@@ -0,0 +1,62 @@
+package com.dongho.df.domain.creational.builder;
+
+import com.dongho.df.domain.creational.builder.pizza.HawaiianPizzaBuilder;
+import com.dongho.df.domain.creational.builder.pizza.Pizza;
+import com.dongho.df.domain.creational.builder.pizza.PizzaDirector;
+import com.dongho.df.domain.creational.builder.pizza.SpicyPizzaBuilder;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@RunWith(JUnit4.class)
+public class BuilderTest {
+
+    @Test
+    public void hawaiianPizzaBuildTest() {
+        PizzaDirector pizzaDirector;
+
+        given: {
+            pizzaDirector = new PizzaDirector();
+            pizzaDirector.setPizzaBuilder(new HawaiianPizzaBuilder());
+        }
+
+        when: {
+            pizzaDirector.constructPizza();
+        }
+
+        then: {
+            Pizza pizza = pizzaDirector.getPizza();
+
+            assertThat(pizza.getDough()).isEqualTo("cross");
+            assertThat(pizza.getSause()).isEqualTo("mild");
+            assertThat(pizza.getTopping()).isEqualTo("ham + pineapple");
+        }
+
+    }
+
+    @Test
+    public void spicyPizzaBuildTest() {
+        PizzaDirector pizzaDirector;
+
+        given: {
+            pizzaDirector = new PizzaDirector();
+            pizzaDirector.setPizzaBuilder(new SpicyPizzaBuilder());
+        }
+
+        when: {
+            pizzaDirector.constructPizza();
+        }
+
+        then: {
+            Pizza pizza = pizzaDirector.getPizza();
+
+            assertThat(pizza.getDough()).isEqualTo("pan baked");
+            assertThat(pizza.getSause()).isEqualTo("hot");
+            assertThat(pizza.getTopping()).isEqualTo("pepperoni + salami");
+        }
+
+    }
+
+}