Twitter4J Twitter Library For Java

http://twitter4j.org/en/index.html

Marge – Bluetooth lib for Java

for howto:

http://wiki.java.net/bin/view/Mobileandembedded/HowTo06

for download :

http://wiki.java.net/bin/view/Mobileandembedded/Version06

Download file from PHP

http://snipplr.com/view/14428/php-downloadcopy-fileimage/

function to donwload with PHP