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Community

Ecole Supérieure D'Informatique of Université Polytechnique de Bobo-Dioulasso has got an extraordinary chance to stand the first NetBeans Day in Burkina Faso by the 25th july 2015. This event has been successfully thank to rock stars Geertjan Wielenga, Jiri Kovalsky and Bruno Souza. Through the talk "This is NetBeans", Geertjan presented the NetBeans as tool and community. After that Jiri...
on Jul 29, 2015
JavaLand 2015 Wrap Up After months of preparation, it all came down to three days of intense execution, and I was just one speaker. I can only marvel at the logistical acumen that was on display from the JavaLand and DOAG team. I had an action packed agenda: two conference sessions, two Early Adopter's Area (EAA) session, and one training day session. Thrown into the mix were a couple 1:1...
on Mar 30, 2015
Since begin of the time, the man need to do exchanges of goods materials or services, began with simples goods exchanges. In this time, already has necessity to start the standardization process, the first step was using metals as gold, silver and bronze becoming to representative money today. Nowadays with large number of e-commerce and automation of finance market and another systems that take...
on Aug 25, 2014
The Java is a platform which grown up quickly, for many rations such it can write once time and run anywhere, it runs languages on JVM. There is a myth that Java cannot compile its sources on run time, but it's truth? Have a dynamic language is important to make some projects, for example, calculate taxes to different cities, so the source should be on the database and each city it puts the...
on Jan 19, 2014

EJB

I've just finished tuning a client's application where one of the items on the table was to find the source of calls to System.gc(). Using Censum made easy work of understanding the source of the calls. The team I was working with not only missed that these calls to System.gc() where creating havoc with their end users experience, they didn't even realize that something, some where was messing...
on Jan 27, 2015

J2SE

JDK 8 introduced a lot of new features and improvements in the platform from Lamda expressions, Stream collection types, Functional interfaces, Type annotations, Nashorn etc. Guava library from Google provided some support for functional programming idioms prior to JDK 8. I have been using Guava for some of my projects. So here is a small write up on how new functionality added in JDK 8 makes it...
on Jul 14, 2014
Runtime type information (RTTI) refers to the correct identification of the type of your objects at run time. When you write code, it is generally desirable to do so in a way that takes advantage of OOP features like encapsulation and inheritance to make your program easily extensible, by for instance, as much as possible manipulating references to base classes and letting polymorphism work for...
on Apr 21, 2014
In this post, I try to give a reasonable account of Java's error handling system being as it is that the handling of errors is a concern that any reasonable programming language must find some way to contend with. Java's error handling methodology is based on an idea of exceptions. An exception is a condition that prevents your program from further executing along the current path. It signifies...
on Mar 5, 2014
If you have followed previous posts, you might begin to perceive a pattern in the semantics of the Java programming language. If not, it might help to go over previous posts as I tend to return to expand on previous topics or add clearer examples as time permits. Inner classes might at first seem like a whole new language to the uninitiated but they are a nice feature in Java that allow you to...
on Feb 20, 2014
In the normal course of solving a general programming problem, it is almost certain that you will become compelled to create, and identify useful ways by which to hold any number of objects within your program. In Java, you are normally inclined toward the array as the natural choice for holding a group of primitives, but this has the obvious limitation of being of a fixed size, whereas, under...
on Feb 12, 2014
Interfaces are completely abstract classes in Java that provide you with a uniform way to properly delineate the structure or inner workings of your program from its publicly available interface, with the consequence being a greater amount of flexibility and reusable code as well as more control over how you create and interact with other classes. More precisely, they are a special construct in...
on Jan 18, 2014
There are mainly two ways by which one may reuse classes in Java. The first is by way of composition. Composition provides a way to compose your classes from objects of existing classes, essentially making use of the objects' functionality as opposed to its form. The second method is by what we call inheritance, which describes how one may derive a new class as a type of an existing class. With...
on Dec 18, 2013
A key consideration for the library designer in the normal conduct of operations is maintaining the ability to make changes or improvements to the library at any time without requiring the consumers (client programmers) of that library to do the same. In Java, a library consists of a logical grouping of .class files packaged together to make a working program. An apt analogy to this point may be...
on Dec 8, 2013
Operators in Java work much like they do in mathematics, producing a value from one or more operands. An operand is any quantity on which an operation can be performed and in Java these include primitives and objects. Basic arithmetic operators in Java include addition (+), subtraction (-), multiplication (*), division (/) and the assignment operator (=), all of which constitute the binary...
on Nov 11, 2013
Much of what you do in Java is to define classes that package data and functionality together by concept to represent the desired problem-space element. When you instantiate a class, you create an object that has it's own piece of memory made up of other objects. Java has a peculiar means of manipulating these elements in memory. This is to say even though you treat everything as an object, you...
on Oct 25, 2013

Accessibility

The new version of Easy-Cassandra, the version 2.0.1, have launched, some news are: Refactoring constructor on Session Factory QueryBuilder (InsertBuilder, UpdateBuilder, DeleteBuilder, SelectBuilder and BatchBuilder) Go faster both write and read Processors asynchronous More supports to Spring-Data As have an easier the configuration a Session Factory, it was made the ClustInformation, this...
on Feb 13, 2014

Education

Just recently I was engaged to assist with an application that wasn’t behaving. The application, running in a 1.7.0_45 JVM, relied heavily on a 3rd party SAAS framework. That vendor provided my client with a list of 26 different JVM flags that should be set. When faced with this long list of flags I couldn’t resist asking why all the flags and why these flags. After all there are more than 700...
on Dec 11, 2013

Programming

Each of these objects can be described in terms of the classes or types to which they belong for instance a maple tree belongs to the class of tree or is a type of tree, a bicycle is a type of cycle, a car is a type of vehicle. OOP is thus a very powerful language abstraction that allows you to simplify the complexity of a problem while retaining its value. Java is an Object Oriented...
on Oct 16, 2013

JavaOne

2013-09-25 Table of Contents 8:30am - nuvos: the Universal SDK case-study backend frontend features 10:00am - OAuth 2.0 : A Standard is Coming of Age 11:30am - Java Flight Recorder Behind the Scenes Last Modified : 2013 Sep 26 (Thu) 16:25:00 by carr. Wednesday, Sep 25, 2013 8:30am - nuvos: the Universal SDK Kevin McCarthy - President / CEO, IntraMeta This presentation is...
on Sep 26, 2013
2013-09-24 Table of Contents 8:30am - Functional Reactive Programming with RxJava 10:00am - The JVM is dead! Long live the Polyglot VM! 1pm - invokedynamic in 45 minutes java.lang.invoke bytecode your turn 3pm - Wholly Graal - Java on GPU graal overview GPU offload 5:30pm - Experimenting with the Boundaries of Static Typing 7:30pm - Developing Small Languages with Scala Parser...
on Sep 24, 2013