15552 빠른 A+B

* BufferedReader, BufferedWriter, StringTokenizer

package baek;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) throws Exception {
		// Scanner와 System.out.println 대신 BufferedReader와 BufferedWriter를 사용
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		int num = Integer.parseInt(br.readLine());
		
		StringTokenizer token;
		
		for(int i=0; i<num; i++) {
			token = new StringTokenizer(br.readLine(), " ");
			bw.write((Integer.parseInt(token.nextToken()) + Integer.parseInt(token.nextToken())) + "\n");
		}
		br.close();
		
		bw.flush();
		bw.close();
	}
}

 

*BufferedReader, StringBuilder, StringTokenizer

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		 
int N = Integer.parseInt(br.readLine());

StringTokenizer st;
StringBuilder sb = new StringBuilder();

for (int i = 0; i < N; i++) {
	st = new StringTokenizer(br.readLine()," ");
	sb.append(Integer.parseInt(st.nextToken()) + Integer.parseInt(st.nextToken())).append('\n');
}
br.close();

System.out.println(sb);

 

둘다 자바어플리케이션에서 실행했을때는 NumberFormatException이 일어나며 동작을 안한다. 왜그렇지...