package com.test;import java.util.Scanner;
//String的连接1000次
class StringOperate{private String str;public long doWork(){long begin=System.currentTimeMillis();//开始时间setStr(null);for(int i=0;i<10000;i++){setStr(getStr() + i);}long end=System.currentTimeMillis();//结束时间long time=end-begin;//时间差return time;}public String getStr() {return str;}public void setStr(String str) {this.str = str;}
}
class IntOperate{private int num=0;public long doWork(){long begin=System.currentTimeMillis();for (int i = 0; i < 10000; i++) {setNum(getNum() + i);}long end=System.currentTimeMillis();long time=end=begin;return time;}public int getNum() {return num;}public void setNum(int num) {this.num = num;}
}
//模板方法设计模式
class TemplateMethosDemo{}
public class Main{private static Scanner sc;public static void main(String[] args){//统计String连接10000次此时和int相加的时间差StringOperate st=new StringOperate();System.out.println(st.doWork());IntOperate in=new IntOperate();System.out.println(in.doWork());}
}