Java ByteBuffer save to file using FileChannel

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
  public static void main(String[] argv)throws IOException {
    ByteBuffer b = ByteBuffer.wrap("demo2s.com".getBytes());

    toFile(b, new File( "Main.java"));
    System.out.println("done");
  }/* w w  w.  ja  v  a 2  s.co m*/

  public static void toFile(ByteBuffer buffer, File file) throws IOException {
    RandomAccessFile raf = null;
    FileChannel channel = null;
    try {
      raf = new RandomAccessFile(file, "rw");
      channel = raf.getChannel();
      channel.write(buffer);
      channel.force(false /* metadata */);
      channel.close();
      raf.close();
    } finally {
      if (channel != null) {
        try {
          channel.close();
        } catch (IOException e) {
          // Ignored.
        }
      }
      if (raf != null) {
        try {
          raf.close();
        } catch (IOException e) {
          // Ignored.
        }
      }
    }
  }
}