Back to feed
Renewal·서른의 생활코딩

ex3) java.io.* - File Byte Stream

NS
normalstory
cover image

// File copy using FileInputStream and FileOutputStream
// Reads bytes from source file and writes to destination file
// Uses byte array buffer for efficient reading/writing

import java.io.*;

public class FileCopyExample {
  public static void main(String[] args) {
    try {
      FileInputStream fis = new FileInputStream("source.txt");
      FileOutputStream fos = new FileOutputStream("dest.txt");
      int data;
      while((data = fis.read()) != -1) {
        fos.write(data);
      }
      fis.close();
      fos.close();
    } catch(IOException e) {
      e.printStackTrace();
    }
  }
}

This English version was translated by Claude.

친절한 찰쓰씨
Written by
친절한 찰쓰씨

Pleasant Charles — UI/UX researcher at AIT. Keeping notes on design, planning, and slow days here since 2010.

More on the author's page

Keep reading

Renewal

Why You Should Use .html Instead of .md Seeing Is Believing

Jul 25, 2026·1 min
Renewal

The Most Important Thing About AX

Jul 17, 2026·2 min
Renewal

디지털 기술과 혁신에 대한 논고(지탱하는 힘)

Jul 17, 2026·5 min