java-完全解耦-例子

class filter{
    public String name(){
        return getClass().getSimpleName();
        }   
     public String process(String s){
        return s;
}
class filter1 extends filter{
    public filter1(){
        print("I'm filter1");
    }
}
class filter2 extens filter{
    public filter2(){
        print("I'm filter2");
    }
}
interface processer{
    Object process(Object item);
}
class filteradapter implements processer{
        filter f;
        filteradapter(filter f){
            this.f = f;
        }
        public Object pocess(Object item){
            f.process((String)item);
            }
}
public class coupling{
    public void process(processer p, String s){
        p.process(s);
        }
    public static void main(String[] args){
        String s = "learing";
        process(new filteradapter(new filter1()), s);
        process(new filteradapter(new filter2()), s);
    }
}

自己看代码运行结果：

I'm filter1
learning
I'm filter2
learning

不知道对不对