Copy a File int by int in Java

// w w w.  ja v  a2 s .c o  m
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
  public static void main(String[] args) throws IOException {
    File inputFile = new File("input.txt");
    File outputFile = new File("output.txt");

    FileInputStream in = new FileInputStream(inputFile);
    FileOutputStream out = new FileOutputStream(outputFile);
    int c;

    while ((c = in.read()) != -1)
      out.write(c);

    in.close();
    out.close();
  }
}