设计模式学习03—抽象工厂模式

interface Button {

}

interface TextArea {

}

class WindowButton implements Button {

}

class LinuxButton implements Button {

}

class WindowTextArea implements TextArea {

}

class LinuxTextArea implements TextArea {

}

public interface IGuiFactory {
    // 产品Button创建方法
    Button createButton();

    // 产品TextArea创建方法
    TextArea createTextArea();

    // 有n个产品等级，就n个创建方法
}

class LinuxGuiFactory implements IGuiFactory {

    @Override
    public Button createButton() {
        return new LinuxButton();
    }

    @Override
    public TextArea createTextArea() {
        return new LinuxTextArea();
    }
}

class WindowsGuiFactory implements IGuiFactory {

    @Override
    public Button createButton() {
        return new WindowButton();
    }

    @Override
    public TextArea createTextArea() {
        return new WindowTextArea();
    }

}

public class Client {

    public static void main(String[] args) {
        // 为了演示，使用new方式创建工厂，最好做成单例的或先初始化好
        IGuiFactory factory = new WindowsGuiFactory();
        Button button = factory.createButton();
        TextArea textArea = factory.createTextArea();
        System. out.println(button);
        System. out.println(textArea);
    }
}