Global Education and Learning
Coming as a Web based service.
Java/Akka based technology models, each of which model a different technology, are active in a distributed Internet community. Any of the technology models may have a definition of a better future version of itself. A technology model that aspires to improve itself engages in conversations with other models in the community; seeking to discover behaviors that are...
on Apr 2, 2015
Cross posted from weblogs.java.net/blog/arungupta/archive/2015/03/22/minecraft-modding-course-elementary-school-teach-java-kids
Exactly two years ago, I wrote a blog on Introducing Kids to Java Programming using Minecraft. Since then, Devoxx4Kids has delivered numerous Minecraft Modding workshops all around the world. The workshop material is all publicly accessible at bit.ly/d4k-minecraft. In...
on Mar 22, 2015
There is so much potential in extracting, processing and synthesizing the the multi faceted, realtime data that can be mined from social sites.
Mining the Social Web by Mathew A. Rusell covers these topics scrupulously. Here is my detailed review of the book
Chapter 1: Mining Twitter, Exploring Trending topics, Discovering what users are talking about
This is an informative chapter which...
on Feb 17, 2014
What is Java?
Java is an high-level programming language created by James Gosling from Sun Microsystems on 1991, released on 1995. Nowadays, Oracle Corporation has the steermanship for Java. Its license is GNU General Public License (GPL).
Is executed on more than 850 millions of devices on all over the world. Java applications are compiled to bytecode that can run on any Java Virtual Machine (...
on Jan 30, 2014
In object oriented programming, polymorphism is a feature that allows you to provide a single interface to varying entities of the same type. This is analogous to the interpretation of the same concept in the field of Biology.
To understand how this works in Java, we must consider inheritance and the ways by which the Java programming language makes method calls.
When you create a class in Java...
on Jan 7, 2014
This post presents the completion of the light weight surveillance and security framework that I wrote for the express purpose of teaching actor programming techniques available with Java and the Akka actor framework. Complete running code is available for study and/or as a base for your own project. While the project is nominally about software to surveill and secure complex premises such...
on Dec 9, 2013
In this post we will be looking at code for a system designed to integrate all of the devices used to provide surveillance and security to extensive physical premises such as malls, campuses, and industrial parks. The approach I am taking involves the actor paradigm and the Java programming language. The selection of actors for this type of application is based on a number of...
on Nov 30, 2013
Indonesia has released the domain .id to public with Indonesia ID, and more more website using this domain, the domain is costly around $50/year.
in Another world, with this domain, we can make the domain become an identity portal.
And yes we are the one that using it (http://www.merv.id), and we also release the OAuth Server, take a look https://github.com/meruvian/yama, a 2-in-1 project that...
on Nov 23, 2014
Save 42% on Soft Skills: The software developer's life manual with discount code ssjnet14 at manning.com.
[This article excerpted from Soft Skills: The software developer's life manual.]
In one of my favorite books of all time, The War of Art, Steven Pressfield expounds upon the difference between being a professional and being an amateur:
Turning pro is a mindset. If we are struggling with...
on Oct 22, 2014
Introduction to Class Diagram
In any project's planning phase, the programmer should describe the behaviour of the different objects that are required to satisfy business use cases. However objects can't emerge from nothing, so you need a template that describe the type of objects that the system will have. As a result, you will need to show a diagram with all the classes involved and their...
on Jan 22, 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
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
Java User Groups
This year, more more apache based company, I mean that a company that repackage, retest or make a bundle of Apache product, selling product in Indonesia.
And as we know, the ecosystem, like tech guy, expert in our region Asia Pasific, i never see.. but pre-sales and salesman, and industry leader, all over the country.
I make a small theory about this, because most of their product are based on...
on Jul 9, 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