Multiple Ajax Requests - Consequtively

When Ajax requests are submitted one after the other by hitting the same URL requests
will not be submitted by property of ajax requests, since it tries to stop multiple requests
being submitted .
This can be avoided by appending Date field with milliseconds to the url.
By doing so the Ajax identifies it as a different request and request will be re-submitted.

OSWORKFLOW - Workflow Engine

OSWorkflow is fairly different from most other workflow systems available, both commercially and in the open source world. What makes OSWorkflow different is that it is extremely flexible.
OSWorkflow can be considered a "low level" workflow implementation. Situations like "loops" and "conditions" that might be represented by a graphical icon in other workflow systems must be "coded" in OSWorkflow.

Almost all of the required libraries for OSWorkflow are included in the distribution:
OSCore 2.0.1+
PropertySet 1.2+
Jakarta commons-logging
BeanShell (optional)
BSF (optional)
EJB interfaces (not neccesarily an EJB container)
XML parser (Not required for JDK 1.4)

Various concepts in oSWorkFlow are
Workflow Definition
Workflow Concepts
Common and Global Actions
Functions
Validators
Registers
Conditions
SOAP Support
Reference
http://www.opensymphony.com/osworkflow/

JNotify - Java library that allows java application to listen to file system events

JNotify works on both Windows (Windows 2000, XP, Vista) and Linux with INotify support (Kernel 2.6.14 and above).

JNotify is a java library that allow java application to listen to file system events, such as:
file created.
file modified.
file renamed.
file deleted.
This property can be used in a number of scenarios.I have used it to reload resource bundles
whenever there is a modiofication in it.
Reference:
http://jnotify.sourceforge.net/