桥接模式（Bridge Pattern）

public abstract class Pen {

    protected Color color;

    public void setColor(Color color) {
        this.color = color;
    }

    public abstract void draw(String name);
}

public class BigPen extends Pen {
    @Override
    public void draw(String name) {
        String penType = "大号毛笔绘制";
        this.color.bepaint(penType,name);
    }
}

public class MiddlePen extends Pen {

    @Override
    public void draw(String name) {
        String penType = "中号毛笔绘制";
        this.color.bepaint(penType,name);
    }
}

public class SmallPen extends Pen {
    @Override
    public void draw(String name) {
        String penType = "小号毛笔绘制";
        this.color.bepaint(penType,name);
    }
}

public interface Color {
    //用于图形着色的方法
    void bepaint(String penType,String name);

}

public class Red implements Color {
    @Override
    public void bepaint(String penType, String name) {
        System.out.println(penType+"红色的"+name+".");
    }
}

public class White implements Color {
    @Override
    public void bepaint(String penType, String name) {
        System.out.println(penType+"白色的"+name+".");
    }
}

public class Green implements Color {
    @Override
    public void bepaint(String penType, String name) {
        System.out.println(penType+"绿色的"+name+".");
    }
}

public class Blue implements Color {
    @Override
    public void bepaint(String penType, String name) {
        System.out.println(penType+"蓝色的"+name+".");
    }
}

public class Black implements Color {
    @Override
    public void bepaint(String penType, String name) {
        System.out.println(penType+"黑色的"+name+".");
    }
}

public class Client {

    public static void main(String[] args) {

        Color color;
        Pen pen;
        color = (Color) XMLUtilPen.getBean("color");
        pen = (Pen) XMLUtilPen.getBean("pen");

        pen.setColor(color);
        pen.draw("鲜花");

    }

}