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Yearly Archives: 2012

JavaOne 2012: Observations and Impressions


I am starting this particular blog post as I sit the the San Francisco International Airport waiting to board an airplane to head home after another satisfying but tiring JavaOne (2012) experience. It is difficult to write another blog post after having frantically written ~30 blog posts on the conference since the keynotes on last Sunday, but I want to ...

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JavaOne 2012: JavaFX Graphics Tips and Tricks


I returned to the Hilton (Imperial Ballroom B) to see Richard Bair‘s (Oracle Java Client Architect) ‘JavaFX Graphics Tips and Tricks.’ Bair is associated with FX Experience and obviously knows JavaFX. Bair said a theme of his talk is on performance. He cautioned that as with most things performance related, avoid performance pre-optimization. He had a big yellow caution screen ...

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Spring MVC Customized User Login Logout Implementation Example


This post describes how to implement a customized user access to an Spring MVC web application (login logout). As a prerequisite, readers are advised to read this post which introduces several Spring Security concepts. The code example is available from Github in the Spring-MVC-Login-Logout directory. It is derived from the Spring MVC with annotations example. Customized Authentication Provider In order ...

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Install Cloudera Manager 3.7.5 Free Edition


I recently installed Cloudera Manager Free Edition on my test cluster. I ran into a few problems during install so hopefully this will help you with your troubles.Cloudera Manager Free Edition will build and configure your single or multi-node CDH cluster and help you manage future changes to it. This software is free to use for up to 50 nodes ...

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Self-Service is the Future of Enterprise Software


Despite human desire to be pampered and served, there is a huge affinity to self service throughout the economy. Some samples: 1) Would you prefer to print your own boarding pass or have an agent do it for you? 2) Do you like taking your computer in for technical support or do you prefer to fix at home? 3) Do ...

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Spring Collection Merging


Spring collection merging is a feature that I first came across as an answer to a StackOverflow question It is a way of creating a base collection (list, set, map or properties) and modifying this base collection in other beans, best explained using an example –             Consider a Person class with a field holding ...

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JavaOne 2012: NetBeans.Next – The Roadmap Ahead


I walked the few steps necessary from Continental Ballroom 4 and one NetBeans topic (Project Easel) to Continental Ballroom 5 to see another NetBeans-oriented presentation: ‘NetBeans.Next – The Roadmap Ahead.’ Ashwin Rao started the Birds of a Feather (BoF) presentation and introduced John Ceccarelli and Tinuola Awopetu. Several audience members attended yesterday’s NetBeans Community Day. Rao showed the typical Oracle ...

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Android: Leaf fall-like animation using property animators


In the previous tutorial we explained how property animations work in general. Now we’ll go even further and explain how to create a property animation that would create leaf-falling-like effect for an ImageView in which we’ll, apparently put images of leaves. For that purpose we need few images that represent leaves. We found the ones we use in the example ...

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Tips for identifying and debugging problems


It seems that some/many developers haven’t developed (pun intended) a good set of techniques to identify and resolve problems. And problems always occur, even in simple programs. Recently I’ve been answering a lot of questions on StackOverflow and those questions confirmed my suspicions. Some of the advice here may sound like advice for newbies, but pactice shows they are needed. ...

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Spring3 + JPA2 + Java EE6 App Server = Confusion Over Configuration


Spring is great, JavaEE6 is great and latest JavaEE6 Application servers are also great. This post is not a rant on Spring Vs JavaEE6, but my experience of porting a Spring3+JPA2(Hibernate) application on JBoss AS-7.1 App Server. My application requirement is very simple: Developing a couple of SOAP based webservices using Spring3.1 and JPA2(Hibernate) and host it on JBoss AS ...

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