java回调函数

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//回调申明import java.util.List;public interface CallBack {    void callbackMethod(List<Object> list);}//内部调用<pre name="code" class="java"><pre name="code" class="java">import java.util.List;public class InnerDeal {private CallBack callBack;InnerDeal(CallBack callBack){this.callBack=callBack;}public void execute(List<Object> list) {System.out.println("我要回调了"+"\n要处理的列表：");for(Object v:list){System.out.print(v+"\t");}callBack.callbackMethod(list);System.out.println("回调完成");}}

//回调实现

import java.util.ArrayList;import java.util.List;<pre name="code" class="java">import java.util.ArrayList;import java.util.List;public class ResultTest {public static void main(String[] args) {List<Object> list=new ArrayList<Object>();list.add(10);list.add(20);list.add(87);new InnerDeal(new CallBack() {@Overridepublic void callbackMethod(List<Object> list) {System.out.println("\n嗯，我是回调函数,以下是我的处理结果：");int accumlate=0;for(Object v:list){accumlate+=(Integer)v;}System.out.println("结果:"+accumlate);}}).execute(list);System.out.println("------------------------------");new InnerDeal(new CallBack() {@Overridepublic void callbackMethod(List<Object> list) {System.out.println("\n嗯，我是回调函数,以下是我的处理结果：");int accumlate=0;for(Object v:list){Integer iv=(Integer) v;if(iv%2==1){continue;}accumlate+=iv*iv;}System.out.println("结果:"+accumlate);}}).execute(list);}}

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