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Two Reasons Why Estimates Aren’t Worth It


When potential customers contact us, the odds are that they want to know two things: How much does it cost to implement the application? How long it will take to implement the application? The honest answer to both of these questions is: We have no idea. Needless to say, if we give this answer to potential customers, the odds are ...

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Automating the Release of Java Artifacts Using Jenkins on Window


This post will show how to automate the release process of a Java Web Application (Student Enrollment Application developed using MYSQL DB with Hibernate ORM in a REST based Jersey2 Spring environment) using Jenkins Continuous Integration – upload the release artifacts to release repository. The job configured using this post must be run only after uploading the snapshot artifacts into ...

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Implementing Jersey 2 Spring integration


Jersey is the excellent Java JAX-RS specification reference implementation from Oracle. Last year, when we were starting to build RESTful backend web services for a high-volume website, we chose to use the JAX-RS API as our REST framework and Spring framework for dependency injection. Jersey was our JAX-RS implementation of choice. When the project was started JAX-RS API 2.0 specification ...

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MapReduce Algorithms – Understanding Data Joins Part II


It’s been awhile since I last posted, and like last time I took a big break, I was taking some classes on Coursera. This time it was Functional Programming Principals in Scala and Principles of Reactive Programming. I found both of them to be great courses and would recommend taking either one if you have the time. In this post ...

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Mockito Templates for Eclipse


Sometimes I miss the forest for the trees – and that for a disturbingly long time. I just became aware of this once again recently, typing one of the more verbose mockito expressions for the umpteenth time. The statement in question was a doAnswer(Answer) construct which always feels a bit cumbersome to code with the static import and generics stuff ...

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Applying aspect oriented programming


1.Introduction The main target of the aspect oriented programming is the separation of cross-cutting concerns. When we talk about cross-cutting concerns we are referring to generic functionality that is used in several places in our system or application. These concepts are, among others:         Logging Transaction management Error handling Monitoring Security The way to achieve this separation ...

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Playing with Java 8 Lambdas in the JDT


I’ve been playing with the language a bit while tinkering with the Java 8 support under development by the Eclipse Java development tools (JDT) project. I’ll admit that I’m a little underwhelmed by lambdas in Java 8. This, of course, comes from an Old Dude Who Knows Smalltalk (and LISP/Scheme). Like any good Smalltalk curmudgeon, when I set about learning ...

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Spring Integration Standalone application with Spring Boot


I had earlier blogged about a way to write a standalone Spring Integration application. Spring Boot makes creating this standalone application much simpler. The simple flow was to poll the USGS service providing information about the earthquake activity around the world and to log this information. The flow described using Spring Integration is the following:           ...

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AES-256 Encryption with Java and JCEKS


Overview Security has become a great topic of discussion in the last few years due to the recent releasing of documents from Edward Snowden and the explosion of hacking against online commerce stores like JC Penny, Sony and Target. While this post will not give you all of the tools to help prevent the use of illegally sourced data, this ...

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Java 8 news


The first release candidates of Java 8, b128 and Java 8 RC2 showed up on February, fixing a serious flaw in the new Comparator API, where its new thenComparing() method had an unnecessary type restriction. The thenComparing() method of java.util.Comparator does not require that type U extend java.lang.Comparable, since keyComparator is used to compare extracted key objects. Java 8 RC2 ...

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