对象(Model)

package duixiang; abstract class GetTime{ final void getTime() { long start=System.currentTimeMillis();//获取此刻与某一固定时刻的时间差，单位毫秒 code();// long end=System.currentTimeMillis(); System.out.println(start); System.out.println(end); System.out.println(end-start); } abstract void code();//将getTime()方法中不能明确的部分提出来抽象化}class Code extends GetTime//实现抽象化内容{void code(){int j=0;for(int i=0;i<=10000;i++)j+=i;System.out.println(j);}}public class Model {public static void main(String [] args){Code c=new Code();c.getTime();}}