Copy one file to another using java File,BufferedReader,BufferedWriter

This example reads text files using the classes FileReader, BufferedReader, FileWriter, and BufferedWriter.

import java.io.*;
import java.util.*;

public class CopyTextFile {

  public static void main(String args[]) {
      //... Get two file names from use.
      System.out.println("Enter a filepath to copy from, and one to copy to.");
      Scanner in = new Scanner(System.in);

      //... Create File objects.
      File inFile  = new File(in.next());  // File to read from.
      File outFile = new File(in.next());  // File to write to

      //... Enclose in try..catch because of possible io exceptions.
      try {
          copyFile(inFile, outFile);

      } catch (IOException e) {
          System.err.println(e);
          System.exit(1);
      }
  }


  //=============================================================== copyFile
  // Uses BufferedReader for file input.
  public static void copyFile(File fromFile, File toFile) throws IOException {
      BufferedReader reader = new BufferedReader(new FileReader(fromFile));
      BufferedWriter writer = new BufferedWriter(new FileWriter(toFile));

      //... Loop as long as there are input lines.
      String line = null;
      while ((line=reader.readLine()) != null) {
          writer.write(line);
          writer.newLine();   // Write system dependent end of line.
      }

      //... Close reader and writer.
      reader.close();  // Close to unlock.
      writer.close();  // Close to unlock and flush to disk.
  }


  //=============================================================== copyFile2
  // Uses Scanner for file input.
  public static void copyFile2(File fromFile, File toFile) throws IOException {
      Scanner freader = new Scanner(fromFile);
      BufferedWriter writer = new BufferedWriter(new FileWriter(toFile));

      //... Loop as long as there are input lines.
      String line = null;
      while (freader.hasNextLine()) {
          line = freader.nextLine();
          writer.write(line);
          writer.newLine();   // Write system dependent end of line.
      }

      //... Close reader and writer.
      freader.close();  // Close to unlock.
      writer.close();  // Close to unlock and flush to disk.
  }
}