[백준/자바] 11382 - 꼬마 정민

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        long a = sc.nextInt();
        long b = sc.nextInt();
        long c = sc.nextInt();

        System.out.println(a + b + c);

        sc.close();
    }
}

  

Scanner를 이용하니 런타임 에러가 떴다.

  

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());

        long a = Long.parseLong(st.nextToken());
        long b = Long.parseLong(st.nextToken());
        long c = Long.parseLong(st.nextToken());

        System.out.println(a + b + c);

        br.close();
    }
}

  

BufferedReader, StringTokenizer로 입력값을 받으니 성공