code: public static void stringToFile(String string, File file, String charsetName) {
  		FileOutputStream fos = null;
  		Writer writer = null;
  		try {
  			try {
  				fos = new FileOutputStream(file);
  				writer = new OutputStreamWriter(fos, charsetName);
  				writer.write(string);
  			} finally {
  				if (writer != null) {
  					writer.close();
  				} else if (fos != null) {
  					fos.close();
  				}
  			}
  		} catch (Exception e) {
  			throw new RuntimeException(e);
  		}
  	}
docs: Writes a string into a file.
  
  @param string
  the string
  @param file
  the file
  @param charsetName
  encoding of the file