JAVASE Scanner

package com.huang.boke.flowPath;

import java.util.Scanner;

public class test01 {
    public static void main(String[] args) {
        //创建扫描器对象，用于接收键盘数据
        Scanner scanner = new Scanner(System.in);

        double sum=0;
        int m=0;
        while (scanner.hasNextDouble()){
            double v = scanner.nextDouble();
            m=m+1;
            sum=sum+v;
        }
        System.out.println("平均数"+(sum/m));
        System.out.println("和"+sum);
        //scanner例析

       //io流不关闭会占用资源，使用后应关闭
        scanner.close();

    }

}