Java练习-购物小票

/*
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 * and open the template in the editor.
 */
package schoolReport;

import java.util.*;

/**
 *
 * @author Administrator
 */
public class ComputeScore {
    double compute(String chengjiForm){
        Scanner scanner = new Scanner(chengjiForm);//创建scanner，将chengjiForm传递给构造方法的参数
        String regex = "[^0123456789.]+";
        scanner.useDelimiter(regex);  //scanner调用useDelimiter（String regex），将regex传递给该方法的参数
        double sum=0;
        while(scanner.hasNext()){
            try{
                double price = scanner.nextDouble();//scanner调用nextDouble（）返回数字单词
                sum = sum+price;
            }
            catch(InputMismatchException exp){
                String t=scanner.next();
            }
        }
        return sum;
        
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package shoppingReceipt;

import checkIntroduction.*;

/**
 *
 * @author Administrator
 */
public class ShowComputePice {
    public void showComputePice(){
        String s1="苹果：56.7元，香蕉：12元，芒果：19.8元";
        String s2="酱油：6.7元，精盐：0.8元，榨菜：9.8元";
        ComputePice jisuan = new ComputePice();
        String regex = "[^0123456789.]+";//匹配所有非数字字符串
        String s1_number = s1.replaceAll(regex, "*");
       //   
        String regex2 = "[0123456789元.]+";
        String temp = s2.replaceAll(regex2, "");
        temp = temp.replaceAll("："," ");
        temp = temp.replaceAll("，", " ");
        System.out.println("***************");
        System.out.println(temp);
        System.out.println();
        //
        double priceSum = jisuan.compute(s1_number,"*");
        System.out.printf("\"%s\"价格总和：\n%f元\n",s1,priceSum);
        String s2_number = s2.replaceAll(regex, "#");
        priceSum = jisuan.compute(s2_number, "#");
        System.out.printf("\"%s\"价格总和：\n%f元\n",s2,priceSum);
    }
}

        ShowComputePice scp=new ShowComputePice();
        scp.showComputePice();
        System.out.printf("\n\n");