From e02964ff81fed148941cecc84c1efa6d1a75fc34 Mon Sep 17 00:00:00 2001
From: Anastasios Ioannidis
 <121166333+anastasiosioannidis@users.noreply.github.com>
Date: Fri, 8 Sep 2023 14:51:15 +0300
Subject: [PATCH] JAVA-1597 Abstract Factory pattern example (#14733)

Upgraded example displaying a more complex use of the pattern
---
 .../AbstractFactoryRunner.java                |  8 +++++++
 .../creational/abstractfactory2/Animal.java   | 13 ++++++++++
 .../AnimalAbstractFactory.java                | 22 +++++++++++++++++
 .../abstractfactory2/AnimalEra.java           |  6 +++++
 .../abstractfactory2/AnimalType.java          |  6 +++++
 .../CenozoicAnimalFactory.java                | 23 ++++++++++++++++++
 .../abstractfactory2/EraAnimalFactory.java    |  7 ++++++
 .../abstractfactory2/LandAnimal.java          | 13 ++++++++++
 .../MesozoicAnimalFactory.java                | 24 +++++++++++++++++++
 .../abstractfactory2/SkyAnimal.java           | 13 ++++++++++
 10 files changed, 135 insertions(+)
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AbstractFactoryRunner.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/Animal.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalAbstractFactory.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalEra.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalType.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/CenozoicAnimalFactory.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/EraAnimalFactory.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/LandAnimal.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/MesozoicAnimalFactory.java
 create mode 100644 patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/SkyAnimal.java

diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AbstractFactoryRunner.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AbstractFactoryRunner.java
new file mode 100644
index 0000000000..59aa3f8040
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AbstractFactoryRunner.java
@@ -0,0 +1,8 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class AbstractFactoryRunner {
+
+    public static void main(String[] args) {
+        new AnimalAbstractFactory().createAnimal(AnimalType.LAND);
+    }
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/Animal.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/Animal.java
new file mode 100644
index 0000000000..97b444c3e0
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/Animal.java
@@ -0,0 +1,13 @@
+package com.baeldung.creational.abstractfactory2;
+
+public abstract class Animal {
+    AnimalType type;
+    AnimalEra era;
+    String name;
+    Animal(AnimalType type, AnimalEra era, String name) {
+        this.type = type;
+        this.era = era;
+        this.name = name;
+    }
+    abstract void create();
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalAbstractFactory.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalAbstractFactory.java
new file mode 100644
index 0000000000..6d09e1661a
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalAbstractFactory.java
@@ -0,0 +1,22 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class AnimalAbstractFactory {
+
+    Animal animal;
+    Animal createAnimal(AnimalType type) {
+        AnimalEra era = getFromConfiguration();
+        switch (era) {
+        case MESOZOIC:
+            animal = new MesozoicAnimalFactory().createAnimal(type);
+            break;
+        case CENOZOIC:
+            animal = new CenozoicAnimalFactory().createAnimal(type);
+            break;
+        }
+        return null;
+    }
+
+    AnimalEra getFromConfiguration() {
+        return AnimalEra.MESOZOIC;
+    }
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalEra.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalEra.java
new file mode 100644
index 0000000000..0ee4deda65
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalEra.java
@@ -0,0 +1,6 @@
+package com.baeldung.creational.abstractfactory2;
+
+public enum AnimalEra {
+    MESOZOIC,
+    CENOZOIC
+}
\ No newline at end of file
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalType.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalType.java
new file mode 100644
index 0000000000..be2f5e2361
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/AnimalType.java
@@ -0,0 +1,6 @@
+package com.baeldung.creational.abstractfactory2;
+
+public enum AnimalType {
+    LAND,
+    SKY
+}
\ No newline at end of file
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/CenozoicAnimalFactory.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/CenozoicAnimalFactory.java
new file mode 100644
index 0000000000..cf28acdd25
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/CenozoicAnimalFactory.java
@@ -0,0 +1,23 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class CenozoicAnimalFactory implements EraAnimalFactory{
+    @Override
+    public LandAnimal makeLandAnimal() {
+        return new LandAnimal(AnimalEra.CENOZOIC, "Mammoth");
+    }
+
+    @Override
+    public SkyAnimal makeSkyAnimal() {
+        return new SkyAnimal(AnimalEra.CENOZOIC, "Terror bird");
+    }
+
+    Animal createAnimal(AnimalType type) {
+        switch (type) {
+        case LAND:
+            return makeLandAnimal();
+        case SKY:
+            return makeSkyAnimal();
+        }
+        return null;
+    }
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/EraAnimalFactory.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/EraAnimalFactory.java
new file mode 100644
index 0000000000..30c69b4598
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/EraAnimalFactory.java
@@ -0,0 +1,7 @@
+package com.baeldung.creational.abstractfactory2;
+
+public interface EraAnimalFactory {
+
+    LandAnimal makeLandAnimal();
+    SkyAnimal makeSkyAnimal();
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/LandAnimal.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/LandAnimal.java
new file mode 100644
index 0000000000..963cd96969
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/LandAnimal.java
@@ -0,0 +1,13 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class LandAnimal extends Animal{
+
+    LandAnimal(AnimalEra era, String name) {
+        super(AnimalType.LAND, era, name);
+        create();
+    }
+    @Override
+    void create() {
+        System.out.println("Creating a " + type + " animal: " + name);
+    }
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/MesozoicAnimalFactory.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/MesozoicAnimalFactory.java
new file mode 100644
index 0000000000..dd56669242
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/MesozoicAnimalFactory.java
@@ -0,0 +1,24 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class MesozoicAnimalFactory implements EraAnimalFactory{
+    @Override
+    public LandAnimal makeLandAnimal() {
+        return new LandAnimal(AnimalEra.MESOZOIC, "Tyrannosaurus Rex");
+    }
+
+    @Override
+    public SkyAnimal makeSkyAnimal() {
+        return new SkyAnimal(AnimalEra.MESOZOIC, "Pterodactylus");
+    }
+
+    Animal createAnimal(AnimalType type) {
+        switch (type) {
+            case LAND:
+                 return makeLandAnimal();
+            case SKY:
+                return makeSkyAnimal();
+        }
+        return null;
+    }
+
+}
diff --git a/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/SkyAnimal.java b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/SkyAnimal.java
new file mode 100644
index 0000000000..ce27236d7c
--- /dev/null
+++ b/patterns-modules/design-patterns-creational/src/main/java/com/baeldung/creational/abstractfactory2/SkyAnimal.java
@@ -0,0 +1,13 @@
+package com.baeldung.creational.abstractfactory2;
+
+public class SkyAnimal extends Animal{
+
+    SkyAnimal(AnimalEra era, String name) {
+        super(AnimalType.SKY, era, name);
+        create();
+    }
+    @Override
+    void create() {
+        System.out.println("Creating a " + type + " animal: " + name);
+    }
+}