Dumping a Java StringBuilder to File

Question

What is the most efficient/elegant way to dump a StringBuilder to a text file?

You can do:

outputStream.write(stringBuilder.toString().getBytes());
         


        

Answer 1

For character data better use Reader/Writer. In your case, use a BufferedWriter. If possible, use BufferedWriter from the beginning on instead of StringBuilder to save memory.

Note that your way of calling the non-arg getBytes() method would use the platform default character encoding to decode the characters. This may fail if the platform default encoding is for example ISO-8859-1 while your String data contains characters outside the ISO-8859-1 charset. Better use the getBytes(charset) where in you can specify the charset yourself, such as UTF-8.