JavaMail: Implement DataSource in javax.activation package

[Bruce Jin]

In my java program I need to send some generated contents as e-mail attachment. But I found that the javax.activation only comes with a FileDataSource that implements DataSource. This can be used to send a file:
DataSource source = new FileDataSource(filename);
How do I implement DataSource so that I have something like InputStreamDataSource so that I can send some generated contents in my java program as e-mail attachment?
Thanks.
Bruce

[manoj bagul]

Hello Bruce,
Is the content which u r generating is available before sending mail or during the mail is processing.
If it is generated before mail program then u can store the generated content in a file and user the DataSource.

This might help u.
Manoj.

[Bruce Jin]

The contents is generated on the fly and is not in a file.
I found a ByteArrayDataSource in JavaMail download. This serves my needs.
Bruce