자바 I/O 파일 (made by Petr Mitrichev)

Java I/O file made by Petr Mitrichev

- 특징 : scanner가 아닌 stream을 이용하기 때문에 성능이 좋다

import java.io.*;

import java.util.ArrayList;

import java.util.PriorityQueue;

import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) {

        InputStream inputStream = System.in;

        OutputStream outputStream = System.out;

        InputReader in = new InputReader(inputStream);

        PrintWriter out = new PrintWriter(outputStream);

        Task solver = new Task();

        solver.solve(1, in, out);

        out.close();

    }

    static class Task {

        public void solve(int testNumber, InputReader in, PrintWriter out) {

        }

    }

    static class InputReader {

        public BufferedReader reader;

        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {

            reader = new BufferedReader(new InputStreamReader(stream), 32768);

            tokenizer = null;

        }

        public String next() {

            while (tokenizer == null || !tokenizer.hasMoreTokens()) {

                try {

                    tokenizer = new StringTokenizer(reader.readLine());

                } catch (IOException e) {

                    throw new RuntimeException(e);

                }

            }

            return tokenizer.nextToken();

        }

        public int nextInt() {

            return Integer.parseInt(next());

        }

    }

    static void setupInputOutputFile() {

        try {

            System.setIn(new FileInputStream(new File("resources/input.txt")));

            System.setOut(new PrintStream(new File("resources/output.txt")));

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}