Well then you are doing something wrong, but I assure you that Nero does not use Java to burn a CD.

Try going into a little more detail about what you are doing to make the burn, because obviously there is some step missing if the CD is blank.

Include info on what version Nero and if it's one that came with the computer or a full version, even though I don't think it matters. Also did you use Nero Express or Burning ROM.

Do the files you are trying to burn even show up in the burn queue/list in Nero?

Oh and one last thing.. Are you trying to make an Audio disk or an mp3 disk