JAVA求平均价格

实验步骤或程序：

代码：

import java.io.*;

import java.util.*;

public class example10_16 {

public static void main(String args[]) { File file = new File("student.txt");

Scanner sc = null;

int count=0;

double sum=0;

try { double score=0;

sc = new Scanner(file);

https://www.360docs.net/doc/a018244333.html,eDelimiter("[^0123456789.]+");

while(sc.hasNextDouble()){

score = sc.nextDouble();

count++;

sum = sum+score;

System.out.println(score);

}

double aver = sum/count;

System.out.println("平均成绩:"+aver);

}

catch(Exception exp){

System.out.println(exp);

}

}

}

student记事本内容:

商品列表:

电视机,2567元/台

洗衣机,3562元/台

冰箱,6573元/台

运行结果：

1