JSON (JavaScript Object Notation) is a lightweight data-interchange format based on a subset of the JavaScript Programming Language. JSON object structure is built on two structures:... more »

http://javawave.blogspot.com/2008/04/quartz-job-scheduler-part-ii-example.html... more »

Quartz Job Scheduler -- Part 1 (Setting up development project in Netbeans 6.1 beta)... more »

In this article I examine the options available for packaging and deploying Java EE applications. I will start by reviewing the Java EE 5 specifications pertaining to application assembly and deployment. Next I will set out packaging specifications for production EAR files and review some of the techniques you can use to implement and enforce them.... more »

In this article we show how to develop and test an IP Multimedia Subsystem (IMS) application with both a client and a server part, using the free standards-based development tools from the Nokia Siemens Networks IMS Developer Program and BEA WebLogic SIP Server (WLSS). The IMS is a complex environment but with the right tools, that complexity becomes manageable, and end-to-end tests can be made even on a single PC.... more »

Secure Programming with Static Analysis authors, Chess and West, discuss whether the C programming language is safer than Java from their perspective on using Static Analysis in code review testing. ... more »

I needn’t emphasize the importance of choosing best name for class/variable/method. But how many managers/developers care in choosing best names. Most of them concentrate on completing assigned task and deliver working output, because they feel that naming is not going to add any value to their software.... more »

ArrayList and HashMap are a few of the most frequently used data structures in Java development. So I would like to talk about the importance of instantiating these classes with initial capacity. Let me explain how the ArrayList works internally, so that you get a good insight. HashMap works almost the same way an ArrayList works, so I haven’t covered the details of that separately. But all the tips given below are applicable for HashMap as well.... more »

During my Java training, I read about volatile keyword, but didn’t get clear understanding. Recently when I wrote a singleton class using double checked locking, PMD code reviewer gave a warning not to use volatile. Later I started exploring on double checked locking issue, here is my observation.... more »

This is one of the frequently asked questions in the interview. Most of the interviewer expect the below answer. “Thread.stop() method is deprecated, so a boolean variable has to be introduced in thread class and run method should check the boolean variable whether to continue execution or come out of run() method”.... more »