2、购物小票

import java.util.*;

public class FoundPrice {

  public static void main(String[] args) {

     String s="牛奶:89.8元, 香肠:12.9元  啤酒:69元 巧克力:132元";

     String regex="[^0123456789.]";

String digitMess=s.replaceAll(regex, "*");

StringTokenizer fenxi=new StringTokenizer(digitMess, "*");

int number=fenxi.countTokens();

double sum=0;

while(fenxi.hasMoreTokens()){

  String str=fenxi.nextToken();

       System.out.println(str);

  sum=sum+Double.parseDouble(str);

  }

System.out.println("购物小票中的商品种类:"+number+"种");

System.out.println("购物小票中的价格总额:"+sum+"元");

  }

}