how to store rich text data to dabase in java

string rtfText; // data of rich text box
TextRange tr = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);

using (MemoryStream ms = new MemoryStream())
{
    tr.Save(ms, DataFormats.Rtf);
    rtfText = Encoding.ASCII.GetString(ms.ToArray());
}