Collections in Java: there’s more than ArrayList – Java advanced (OCP)
In a previous article I covered Array and ArrayList. Here, I’m gonna go through other data structures in Java and…
Annotations – Java advanced (OCP)
Java provides built-in ready-to-use annotations as well as the possibility to create one’s own annotations. Annotations allow to add metadata…
JDBC : Java DataBase Connectivity – Java advanced (OCP)
JDBC is a database neutral Java API in the java.sql package that allows connectivity and operations on databases. JDBC drivers…
Functional programming and lambda expressions – Java advanced (OCP)
Functional Programming (FP) is a programming paradigm, as OOP is. Java can make use of both. FP relies on Functions.…
Nested classes – Java advanced (OCP)
A nested class is a class written inside another, in order to prevent outside classes to access it or use…
Date and Time in Java 8+ | Preparing for Java Oracle Associate Certification (OCA) / Java basic technical tests
Since Java 8, the java.util.Date class is deprecated and new package java.time was introduced. Even though the old Date class…
Wrapper classes | Preparing for Java Oracle Associate Certification (OCA) / Java basic technical tests
Wrapper classes are reference types that allow to manipulate primitives as so. They are thus nullable, and are necessary to…
Angular/TypeScript: how to add an input option in a dropdown list
In this article, I will explain how I implemented an free text field inside a dropdown list, that is an…