AbstractFactoryDemo.java

// Abstract Products
interface Keyboard {
  void type();
}

interface Mouse {
  void click();
}

interface Headset {
  void playSound();
}

// Abstract Factory
interface PeripheralFactory {
  Keyboard createKeyboard();

  Mouse createMouse();

  Headset createHeadset();
}

// Concrete Factory
class SteelSeriesFactory implements PeripheralFactory {
  public Keyboard createKeyboard() {
    return new SteelSeriesKeyboard();
  }

  public Mouse createMouse() {
    return new SteelSeriesMouse();
  }

  public Headset createHeadset() {
    return new SteelSeriesHeadset();
  }
}

class RazerFactory implements PeripheralFactory {
  public Keyboard createKeyboard() {
    return new RazerKeyboard();
  }

  public Mouse createMouse() {
    return new RazerMouse();
  }

  public Headset createHeadset() {
    return new RazerHeadset();
  }
}

// Concrete Products
class SteelSeriesKeyboard implements Keyboard {
  public void type() {
    System.out.println("Typing on SteelSeries Keyboard");
  }
}

class SteelSeriesMouse implements Mouse {
  public void click() {
    System.out.println("Clicking with SteelSeries Mouse");
  }
}

class SteelSeriesHeadset implements Headset {
  public void playSound() {
    System.out.println("Playing sound with SteelSeries Headset");
  }
}

class RazerKeyboard implements Keyboard {
  public void type() {
    System.out.println("Typing on Razer Keyboard");
  }
}

class RazerMouse implements Mouse {
  public void click() {
    System.out.println("Clicking with Razer Mouse");
  }
}

class RazerHeadset implements Headset {
  public void playSound() {
    System.out.println("Playing sound with Razer Headset");
  }
}

public class AbstractFactoryDemo {
  public static void main(String[] args) {
    PeripheralFactory company = new SteelSeriesFactory();
    Keyboard kb = company.createKeyboard();
    Mouse mouse = company.createMouse();
    Headset hs = company.createHeadset();

    kb.type();
    mouse.click();
    hs.playSound();
  }
}