Get Unbuffered IO support from java.nio.file.Files in Java

/*from   ww w  .  j  ava2  s. co m*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class Main {

  public static void main(String[] args) throws IOException {
    Path file = Paths.get("/home/docs/users.txt");
    Path newFile = Paths.get("/home/docs/newUsers.txt");
    try (InputStream in = Files.newInputStream(file); 
         OutputStream out = Files.newOutputStream(newFile,StandardOpenOption.CREATE, 
                 StandardOpenOption.APPEND)) {
        int data = in.read();
        while (data != -1){
            out.write(data);
            data = in.read();
        }
    }     

  }
}