how to save rich text format in database using java

1string rtfText; //string to save to db
2TextRange tr = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
3using (MemoryStream ms = new MemoryStream())
4{
5    tr.Save(ms, DataFormats.Rtf);
6    rtfText = Encoding.ASCII.GetString(ms.ToArray());
7}
8

1string rtfText= ... //string from db
2byte[] byteArray = Encoding.ASCII.GetBytes(rtfText);
3using (MemoryStream ms = new MemoryStream(byteArray))
4{
5    TextRange tr = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
6    tr.Load(ms, DataFormats.Rtf);
7}
8