Backend Development

Backend development is the server-side work behind an application: APIs, business logic, databases, queues and background jobs. Backend engineers pick languages such as Java, Python, Node.js or C#, decide how data is stored and how services talk to each other, and keep it all fast and correct under load. Most of the hard calls are trade-offs, such as SQL against NoSQL or a monolith against microservices.

177 articles

17/10/2021 9 min read

Inheritance and Polymorphism in Java

Executive Summary: In Java, a subclass inherits from its parent, can override its methods, and runs the overridden…
18/09/2021 8 min read

Encapsulation, Access Modifiers, and Packages in Java

Executive Summary: Encapsulation in Java means keeping fields private and exposing behavior through methods that enforce the object’s…
04/09/2021 9 min read

Java Constructors and the this Keyword: Building Objects That Start Valid

Executive Summary: Java constructors initialize objects at creation, and good ones make invalid objects impossible. I cover classes…
15/08/2021 10 min read

Gradle for Java Projects: Builds, Tasks, and Kotlin DSL

Executive Summary: Gradle builds Java projects from a build.gradle.kts file using plugins, repositories, dependencies, and a toolchain that…
10/08/2021 3 min read

Permalink Issues & Fixes in Local WordPress Development

In the world of web development, WordPress is a popular platform that powers millions of websites across the…
01/08/2021 10 min read

Practice: Build a Number Guessing Game in Java

Executive Summary: This beginner project builds a Java number guessing game with Random, a Scanner input loop, replay,…
20/07/2021 10 min read

Maven for Java Projects: From pom.xml to Build Lifecycle

Executive Summary: Maven builds Java projects from a pom.xml that declares coordinates, dependencies, and plugins. I cover transitive…
16/07/2021 1 min read

Block RESTAPI access to your WordPress site
03/07/2021 10 min read

Practice: Build a CLI Calculator in Java

Executive Summary: This practice project builds a single-file Java CLI calculator with one-shot and interactive modes and switch-expression…
30/05/2021 8 min read

Arrays and Strings in Java (with StringBuilder)

Executive Summary: Java arrays are fixed-length containers with helpers in java.util.Arrays, and Strings are immutable. I cover creating,…
09/05/2021 8 min read

Methods in Java: Parameters, Return Values, and Overloading

Executive Summary: Java methods are defined by a signature and a body, and Java passes everything by value,…
21/03/2021 9 min read

Control Flow in Java: if, switch, Loops, and Modern switch Expressions

Executive Summary: Java control flow covers sequence, branching, loops, and switch. Here I show when to use each…
07/03/2021 9 min read

Variables, Primitive Types, and Operators in Java

Executive Summary: Java variables are statically typed, and the language has eight primitive types with fixed sizes on…
13/02/2021 8 min read

Installing JDK, Setting Up IntelliJ IDEA, and Your First Java Program

Executive Summary: I’ll set up a Java development environment: install JDK 21 from a distribution like Eclipse Temurin,…