Java Files create BufferedWriter for Charset to append

import java.io.BufferedWriter;
import java.nio.charset.Charset;
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) {
      String newName = "demo2s.com";
      Path file = Paths.get("Main.java");
      try (BufferedWriter writer = Files.newBufferedWriter(file, Charset.defaultCharset(), StandardOpenOption.APPEND)) {
         writer.newLine();//from   w  w w  .  j  a  v  a  2  s.c o m
         writer.write(newName, 0, newName.length());
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
}