Prototype

src/main/java/com/dongho/df/domain/creational/prototype/ChocolateCookie.java

@@ -0,0 +1,14 @@
+package com.dongho.df.domain.creational.prototype;
+
+public class ChocolateCookie extends CookiePrototype {
+
+    @Override
+    public String getName() {
+        return "chocolateCookie";
+    }
+
+    @Override
+    protected ChocolateCookie clone() {
+        return ChocolateCookie.class.cast(super.clone());
+    }
+}

src/main/java/com/dongho/df/domain/creational/prototype/CookieMachine.java

@@ -0,0 +1,19 @@
+package com.dongho.df.domain.creational.prototype;
+
+public class CookieMachine {
+
+    private CookiePrototype cookiePrototype;
+
+    public void setCookiePrototype(CookiePrototype cookiePrototype) {
+        this.cookiePrototype = cookiePrototype;
+    }
+
+    public CookiePrototype makeCookie() {
+        CookiePrototype cookie = cookiePrototype.clone();
+
+        // Do something for another initialization.
+
+        return cookie;
+    }
+
+}

src/main/java/com/dongho/df/domain/creational/prototype/CookiePrototype.java

@@ -0,0 +1,18 @@
+package com.dongho.df.domain.creational.prototype;
+
+public class CookiePrototype implements Cloneable {
+
+    public String getName() {
+        return "prototypeName";
+    }
+
+    @Override
+    protected CookiePrototype clone() {
+        try {
+            return CookiePrototype.class.cast(super.clone());
+        } catch (CloneNotSupportedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}

src/main/java/com/dongho/df/domain/creational/prototype/StrawberryCookie.java

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+package com.dongho.df.domain.creational.prototype;
+
+public class StrawberryCookie extends CookiePrototype {
+
+    @Override
+    public String getName() {
+        return "strawberryCookie";
+    }
+
+    @Override
+    protected StrawberryCookie clone() {
+        return StrawberryCookie.class.cast(super.clone());
+    }
+
+}

src/test/java/com/dongho/df/domain/creational/prototype/PrototypeTest.java

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+package com.dongho.df.domain.creational.prototype;
+
+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 PrototypeTest {
+
+    @Test
+    public void chocolateCookieTest() {
+        CookieMachine cookieMachine;
+        CookiePrototype cookiePrototype1;
+        CookiePrototype cookiePrototype2;
+
+        given: {
+            cookieMachine = new CookieMachine();
+            cookieMachine.setCookiePrototype(new ChocolateCookie());
+        }
+
+        when: {
+            cookiePrototype1 = cookieMachine.makeCookie();
+            cookiePrototype2 = cookieMachine.makeCookie();
+        }
+
+        then: {
+            assertThat(cookiePrototype1).isNotEqualTo(cookiePrototype2);
+            assertThat(cookiePrototype1.getName()).isEqualTo("chocolateCookie");
+            assertThat(cookiePrototype2.getName()).isEqualTo("chocolateCookie");
+        }
+    }
+
+    @Test
+    public void strawberryCookieTest() {
+        CookieMachine cookieMachine;
+        CookiePrototype cookiePrototype1;
+        CookiePrototype cookiePrototype2;
+
+        given: {
+            cookieMachine = new CookieMachine();
+            cookieMachine.setCookiePrototype(new StrawberryCookie());
+        }
+
+        when: {
+            cookiePrototype1 = cookieMachine.makeCookie();
+            cookiePrototype2 = cookieMachine.makeCookie();
+        }
+
+        then: {
+            assertThat(cookiePrototype1).isNotEqualTo(cookiePrototype2);
+            assertThat(cookiePrototype1.getName()).isEqualTo("strawberryCookie");
+            assertThat(cookiePrototype2.getName()).isEqualTo("strawberryCookie");
+        }
+    }
+
+}