List/Grid Yearly Archives: 2012

agile-logo

Transition to Agile, Large Technical Debt, Small Project

Many months ago, Rebecca asked an interesting question about technical debt in projects. She asked, How to start when there’s a really big mess? In that case, small, just being a ...
software-development-2-logo

You can’t Refactor your way out of every Problem

Refactoring is a disciplined way to clarify, retain or restore the design of a system as you make changes, and to help cleanup and correct the mistakes and mess that we all make as ...
enterprise-java-logo

JavaEE Revisits Design Patterns: Decorator

This time last year I wrote a series of blog posts on JavaEE implementation of design patterns. Roughly after a year, I realized I missed my favorite pattern, the decorator. Decorator ...
android-logo

Android – Select multiple photos from Gallery

Today i am going to discuss about implementation of selecting multiple photos from Photo Gallery. You know, i have searched enough to find out a solution for selecting multiple images ...
jboss-hibernate-logo

Logging Hibernate SQL

There are two well-known ways to log Hibernate SQL in Grails; one is to add logSql = true in DataSource.groovy (either in the top-level block for all environments or per-environment)             dataSource ...
postgresql-logo

Introduction to PostgreSQL PL/java

Modern databases allow stored procedures to be written in a variety of languages. One commonly implemented language is java.N.B., this article discusses the PostgreSQL-specific java ...
software-development-2-logo

What is HMAC Authentication and why is it useful?

To start with a little background, then I will outline the options for authentication of HTTP based server APIs with a focus on HMAC and lastly I will provide some tips for developers ...
java-logo

Investigating Deadlocks – Part 1

I’m sure we’ve all been there: it’s late, you’re hungry, your server has hung or your application’s running at snail’s pace, and there’s someone breathing down your neck ...
java-logo

Locking with a semaphore : An example

Concurrency is one aspect that brings along interesting challenges along with it. If not correctly handled, it brings about race conditions that will baffle people because those issues ...
jboss-seam-logo

Sending Event Invitations With Seam

These days one of my colleagues had problems with sending event invitation using mail templates with seam (version 2.x). In basic this should not be a hard task, so I will in short ...
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