使用System.in从控制台读取int值

import java.io.InputStreamReader;

import java.io.BufferedReader;

import java.io.IOException;/** 来 自 时代Java**/


public class Standard {


    public static void main(String args[]) throws IOException {

        BufferedReader cin = new BufferedReader(new InputStreamReader(

                System.in));

        String number;

        int total = 0;


        while ((number = cin.readLine()) != null) {

            try {

                total += Integer.parseInt(number);

            } catch (NumberFormatException e) {

                System.err.println("Invalid number in input");

                System.exit(1);

            }

        }

        System.out.println(total);
        /**
        来 自 时代Java公众号 - nowjava.com
        **/

    }

}