(java) Buffered

int 입출력

import java.io.*;

public class BufferedWriter1 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int a = Integer.parseInt(br.readLine());
        br.close();

        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        bw.write(String.valueOf(a));
        bw.flush();
        bw.close();

    }
}