FFT and sound formation

Two questions.

1) Does java have any FFT algorithm? or anything close? if not, I'll just try to make one (emphesis on try).

2) If I have the frequency and amplitude of a wave, is there a way that java can convert my freqency and amplitude data into an actual playable sound file?

Thanks for any help.

[326 byte] By [ArikArikArika] at [2007-11-27 5:50:40]