Bridge

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a simple example for Bridge:
/**
 * Created by Administrator on 2016/3/9.
 * a interface of taste style.
 **/
public interface Peppery {
    String style();
}

/**
 * Created by Administrator on 2016/3/9.
 * first type of taste
 **/
public class PepperyStyle implements Peppery {
    public String style(){
        return"辣味很重，很过瘾...";
    }
}

/**
 * Created by Administrator on 2016/3/9.
 * second type of taste
 */
public class PlainStyle implements Peppery{
    public String style(){
        return "味道清淡，很养胃...";
    }
}

/**
 * Created by Administrator on 2016/3/9.
 * a abstract class who contain Peppery
 */
public abstract class AbstractNoodle {
    /**组合一个Peppery变量，用于将该维度的变化独立出来**/
    protected Peppery style;
    /**每份Noodle必须组合一个Peppery对象**/
    public AbstractNoodle(Peppery style) {
            this.style=style;
    }
    public abstract void eat();
}

/**
 * Created by Administrator on 2016/3/9.
 * second type of noodle
 */
public class BeefNoodle extends AbstractNoodle{
    public BeefNoodle(Peppery peppery) {
        /**super是指的父类本身实例，super()是调用父类的构造方法
         所以super也可以指向父类的成员。**/
        super(peppery);
    }
    public void eat() {
        System.out.println("这是一碗美味的牛肉面条。"
                + super.style.style());
    }
}

/**
 * Created by Administrator on 2016/3/9.
 * first type of noodle
 */
public class PorkyNoodle extends AbstractNoodle {
    public PorkyNoodle(Peppery peppery){
        super(peppery);
    }
    public void eat(){
        System.out.println("这是一碗稍嫌油腻的猪肉面条。"
                + super.style.style());
    }
}

/**
 * Created by Administrator on 2016/3/9.
 * make a test
 */
public class Test {
    public static void main(String[] args)
    {
        /**下面将得到“辣味”的牛肉面**/
        AbstractNoodle noodle1 = new BeefNoodle(
                new PepperyStyle());
        noodle1.eat();
        /**下面将得到“不辣”的牛肉面**/
        AbstractNoodle noodle2 = new BeefNoodle(
                new PlainStyle());
        noodle2.eat();
        /**下面将得到“辣味”的猪肉面**/
        AbstractNoodle noodle3 = new PorkyNoodle(
                new PepperyStyle());
        noodle3.eat();
        /**下面将得到“不辣”的猪肉面**/
        AbstractNoodle noodle4 = new PorkyNoodle(
                new PlainStyle());
        noodle4.eat();
    }
}

Bridge

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原文地址：http://www.cnblogs.com/41ZZY/p/5322731.html