Tutorial: JPA on Google App Engine
This project will create and delete an entity record. I have chosen JPA for datastore in app engine. You can also look JDO for this purpose. But my choice to…
Upgrading to Google App Engine Java SDK 1.2.8
I was getting following exception while trying to code my first interaction with JPA in Google App Engine. After some searching I came to know that I should upgrade my…
Determine whether application is running on local server or App Engine
If you are working on developing some application on Google App Engine. You may come up with such situation to switch your production code with your local dev code. Following…
How to avoid DeadlineExceededException in Google App Engine
If you are developing web application on Google App Engine for Java. And you dont know what this exception is. You can be in trouble. The container throws this exception…
SCJP Plus Beta Certification exam delayed
When I came to know that Sun is giving away the opportunity to sign up for newly launched SCJP i.e. Sun Java Programmer Plus certification. I registered for it. According…
HashMap vs Hashtable vs HashSet
I was reading about collection framework of Java. And was studying Hashtable, HashMap and HashSet. Its quite interesting to know the differences between them. In this post I will discuss…
Sun has announced Java Store
Sun Microsystems has unleashed Java Store at store.java.com. The purpose of this store is to give opportunities to developers to make money by showcasing their Java applications. Which they care…
Sun should promote its Java forum contributors
SUN Forums are ultimate source to get help about programming problems and support about Java platform. Its the largest community driven by Java developers. If you are a Java developer…
Sun Certification free retake offer. Register by June 19, 2009
SUN Microsystems has launched again the free retake offer for certification exams. SUN announced this deal last year too. And those people who missed this opportunity last year, this time…
Oracle has acquired SUN Microsystems. So whats the impact?
On 20th April Oracle has eaten up another company. SUN Microsystems which was dangling around in the corridors of IBM, now at last got settled with Oracle on price of …