Category Archive

One of the questions you may be asked at an interview or certification or a simple test concerning the Java language is the following: What are the methods of the Object class?

Can we execute code before the main(String[]) method ?

Are constructors inheritable?

Are constructors inheritable? Can a subclass call the constructor of the parent class?

How can you limit inheritance for a class?

The java.time.LocalTime class

At last, something new on Dates in Java(8)

wsimport and Webservice .Net 2.0

Secure logins and pages with JSF 2

Creating a Custom Converter in JSF 2.2

Dropdownboxes are easy with JSF 2.2!

Using Channels to Copy Files in Java

JSF 2 forcing tag-generated ids

Concatenating PDFs with iText in Java

Writing and reading files in Java 7 with try-with-resources

Secure httpbase tomcat authentication

A Servlet to manage file downloads in Java

Sending e-mails with attachments in Java

The String.format a printf method for Java

HOWTO FIX error ‘illegal pattern character g’ JAXB in NetBeans .

Java Architecture for XML Binding

How to find jar file where a certain class is contained (deployed in GlassFish).

The Content is not allowed in prolog error

Every XML document we work on should be formatted correctly, saved with the right encoding, etc

Let’s delve into methods in Java

Classes and methods in Java

Defining classes in Java: access modifiers, class and instance entities

Java Array

Arrays are available in most programming languages because they realise the simplest organisation of complex data structures

Java Essential Features

The essential features of the Java language that you must know

Programming

In the world of functional programming, monads can be defined as algebraic structures that encapsulate values and computations, providing a coherent interface for the management of computational contexts.

Using Prolog to Build Expert Systems

Passing Parameters to Methods/Functions/Procedure in Programming Languages

What is an inference engine?

What is an expert system?

Understanding Domain Specific Languages

Cobol overview

Explore the World of Artificial Intelligence

Five Websites to Boost Your Productivity and Creativity

The programming language Scala

Turing Machine

Basic concepts and information on Turing Machines, accepted language, recursively enumerable and recursiv

From Context-Free Grammar (CFG) to Pushdown Automata (PDA)

Construction of a stack automaton (PDA) from a CF grammar

From Pushdown Automata (PDA) to Context-Free Grammar (CFG)

Construction of a Context-Free Grammar from a Pushdown Automata

Prefix Property

Pushdown Automata (PDA) and language recognition problems with special features

Context-free languages properties

Context-free language properties and considerations

Pumping lemma for Context Free languages

The pumping lemma version for context-free languages

CFG in Chomsky and Greibach’s normal form

Chomsky and Greibach’s context-free grammar in normal form, how they are made and why they are interesting

Alphabets, Symbols, Strings and Languages

What are alphabets, symbols and strings from the point of view of theoretical computer science

Design Patterns State

Features and sample Java code reduced to the essentials

Design Pattern Visitor

The Singleton design pattern

Some examples of the Singleton pattern

Design Patterns Interpreter

Minimal example Java code on Interpreter pattern

The Chain Of Responsibilityeton design pattern

Minimal CoF pattern example code

The Design Pattern Strategy

Minimal example code on the Strategy pattern

BFS Breadth First Search

DFS o Depth First Search

Generic visit algorithm for a tree

Tree Linked List

Trees indexed representations

Tree in Java

Structures indexed in depth

Queue

Stack

Linked List

Indexed structures

Java Dictionaries

The Java implementation of Dictionaries

Computer Architecture: what is it?

Computer architecture is a branch of computer science that studies the design and implementation of information processing systems

Introduction to Machine Learning

Machine learning is a powerful technology that allows computers to learn from data without being explicitly programmed. It is used in a wide range of applications, including image recognition, text classification, and event prediction