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