Convert a Date/Time to a Unix timestamp and Vice versa

http://www.onlineconversion.com/unix_time.htm

MultiThreading and Synchronization & Java questions

http://paulbridger.net/multithreading_tutorial
http://www-128.ibm.com/developerworks/java/library/j-threads1.html
http://bobcat.webappcabaret.net/javachina/faq/01.htm
http://bobcat.webappcabaret.net/javachina/faq/09.htm#cpp_Q04

Create temporary files securely

* A temporary file must have a unique, unpredictable name.
* The name must still be unique when the file is created.
* The file must be opened with exclusive access.
* The file must be opened with appropriate permissions.
* The file must have an unpredictable name.
* The file must be removed before the program exits.
https://www.securecoding.cert.org/confluence/display/seccode/VOID+FI039-C.+Create+temporary+files+securely