Quartz – an opensource Job scheduler


Quartz is a full-featured, open source job scheduling system that can be integrated with, or used along side virtually any J2EE or J2SE application – from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; jobs whose tasks are defined as standard Java components or EJBs. The Quartz Scheduler includes many enterprise-class features, such as JTA transactions and clustering.

Jobs are scheduled to run when a given Trigger occurs. Triggers can be created with nearly any combination of the following directives:

  • at a certain time of day (to the millisecond)
  • on certain days of the week
  • on certain days of the month
  • on certain days of the year
  • not on certain days listed within a registered Calendar (such as business holidays)
  • repeated a specific number of times
  • repeated until a specific time/date
  • repeated indefinitely
  • repeated with a delay interval

We are using this simple but fully loaded job scheduler for the scheduling purpose.

References : here and here

Technorati tags: Quartz, Scheduler


Eclipse celebrating it’s 5th Birthday

It’s been 5 years since Eclipse was released as an open source project, so it is time to celebrate this special occasion. From the beginning of my professional career I am using Eclipse as my IDE and now I am really celebrating this occasion… 🙂

Want to send a e-Card to Eclipse? Click here

Technorati tags: eclipse 

Spring Web Flow 1.0: The next generation web application controller framework


Spring Web Flow 1.0 has been released. This is a next generation web application controller framework that runs on Java SE 1.3 or greater, and Java EE 1.3 (Servlet 2.3, Portlet 1.0) or greater. The framework allows developers to define user interaction and application behavior as reusable, high-level modules called flows. The product is particularly suited for implementing wizards and other guided processes.

You can download the release here and view the on-line documentation. Existing users running on previous versions should checkout the 1.0 upgrade guide.

Reference : http://www.theserverside.com/news/thread.tss?thread_id=42799

Technorati tags: Spring framework, Spring web flow

SCJP 5.0 Free Mock Exam : Some links

Check these really good sites to test yourself or be familiar with the test format before go for the real exam.

1) http://www.jchq.net/ ( There will generate randomly one question per day for you to answer with full explanation full the answer )

2) http://www.examulator.com/phezam/login.php ( Contain 60 question to answer and is a simulator for the real exam ) Recommended !

3) http://www.jdiscuss.com/ ( Another site generate 1 question per day for you to answer with full explanation ever better compare to jchq.net . There also include a free mock exam )

Ref : lcmbryan’s blog

Technorati tags: SCJP, java