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muzafferjoyamuzafferjoya
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Java Design_Pattern
1 parent 6b8caf3 commit 070ff68

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‎abstract-factory/etc/diagram1.png‎

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‎abstract-factory/etc/diagram2.png‎

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‎abstract-factory/pom.xml‎

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<?xml version="1.0"?>
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<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.khan</groupId>
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<artifactId>java-design-patterns</artifactId>
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<version>1.20.0-SNAPSHOT</version>
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</parent>
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<artifactId>abstract-factory</artifactId>
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<dependencies>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-api</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-engine</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>

‎abstract-factory/src/main/java/com/khan/abstractfactory/App.java‎

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package com.khan.abstractfactory;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.khan.abstractfactory.App.FactoryMaker.KingdomType;
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public class App {
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private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
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private King king;
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private Castle castle;
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private Army army;
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/**
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* Creates kingdom
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*/
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public void createKingdom(final KingdomFactory factory) {
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setKing(factory.createKing());
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setCastle(factory.createCastle());
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setArmy(factory.createArmy());
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}
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King getKing(final KingdomFactory factory) {
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return factory.createKing();
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}
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public King getKing() {
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return king;
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}
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private void setKing(final King king) {
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this.king = king;
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}
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Castle getCastle(final KingdomFactory factory) {
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return factory.createCastle();
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}
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public Castle getCastle() {
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return castle;
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}
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private void setCastle(final Castle castle) {
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this.castle = castle;
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}
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Army getArmy(final KingdomFactory factory) {
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return factory.createArmy();
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}
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public Army getArmy() {
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return army;
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}
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private void setArmy(final Army army) {
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this.army = army;
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}
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/**
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* The factory of kingdom factories.
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*/
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public static class FactoryMaker {
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/**
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* Enumeration for the different types of Kingdoms.
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*/
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public enum KingdomType {
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ELF, ORC
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}
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/**
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* The factory method to create KingdomFactory concrete objects.
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*/
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public static KingdomFactory makeFactory(KingdomType type) {
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switch (type) {
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case ELF:
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return new ElfKingdomFactory();
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case ORC:
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return new OrcKingdomFactory();
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default:
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throw new IllegalArgumentException("KingdomType not supported.");
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}
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}
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}
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/**
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* Program entry point.
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*
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* @param args
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* command line args
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*/
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public static void main(String[] args) {
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App app = new App();
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LOGGER.info("Elf Kingdom");
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app.createKingdom(FactoryMaker.makeFactory(KingdomType.ELF));
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LOGGER.info(app.getArmy().getDescription());
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LOGGER.info(app.getCastle().getDescription());
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LOGGER.info(app.getKing().getDescription());
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LOGGER.info("Orc Kingdom");
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app.createKingdom(FactoryMaker.makeFactory(KingdomType.ORC));
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LOGGER.info(app.getArmy().getDescription());
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LOGGER.info(app.getCastle().getDescription());
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LOGGER.info(app.getKing().getDescription());
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}
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/Army.java‎

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package com.khan.abstractfactory;
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/**
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*
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* Army interface
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*
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*/
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public interface Army {
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String getDescription();
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/Castle.java‎

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package com.khan.abstractfactory;
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/**
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*
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* Castle interface
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*
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*/
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public interface Castle {
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String getDescription();
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/ElfArmy.java‎

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package com.khan.abstractfactory;
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/**
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*
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* ElfArmy
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*
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*/
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public class ElfArmy implements Army {
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static final String DESCRIPTION = "This is the Elven Army!";
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@Override
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public String getDescription() {
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return DESCRIPTION;
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}
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/ElfCastle.java‎

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package com.khan.abstractfactory;
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/**
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*
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* ElfCastle
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*
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*/
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public class ElfCastle implements Castle {
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static final String DESCRIPTION = "This is the Elven castle!";
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@Override
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public String getDescription() {
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return DESCRIPTION;
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}
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/ElfKing.java‎

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package com.khan.abstractfactory;
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/**
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*
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* ElfKing
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*
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*/
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public class ElfKing implements King {
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static final String DESCRIPTION = "This is the Elven king!";
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@Override
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public String getDescription() {
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return DESCRIPTION;
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}
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}

‎abstract-factory/src/main/java/com/khan/abstractfactory/ElfKingdomFactory.java‎

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package com.khan.abstractfactory;
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/**
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*
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* ElfKingdomFactory concrete factory.
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*
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*/
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public class ElfKingdomFactory implements KingdomFactory {
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public Castle createCastle() {
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return new ElfCastle();
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}
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public King createKing() {
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return new ElfKing();
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}
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public Army createArmy() {
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return new ElfArmy();
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}
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}

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