Developers play a pivotal role in the Information Technology (IT) landscape, especially within the Software Development Life Cycle (SDLC). They are the minds behind the code that powers software applications, websites, and systems we use daily. Without developers, there would be no programs, apps, or platforms. This post will explore their responsibilities, skills, and how […]
If you’re just starting to learn JavaScript, choosing the right environment to write and run your code is important. Let’s look at three popular tools: JSBin, Visual Studio Code (VS Code), and Replit. Each of these platforms has its unique strengths and can help you practice coding more effectively. 1. JSBin: Simple and Easy-to-Use JSBin
Coding Playground: JSBin, VS Code, and Replit for JavaScript Read Post »
Black Box and White Box Testing are two fundamental approaches used in software testing to ensure quality, functionality, and reliability. Each method has its unique perspective and application, involving different roles within a software development team, such as Developers, Business Analysts (BAs), Product Owners (POs), and Scrum Masters. Understanding Black Box Testing Black Box Testing
When it comes to career progression, Business Analysts (BAs) often find themselves at a crossroads between technical fields such as Java programming and cybersecurity. Each field offers its own set of opportunities, challenges, and long-term benefits. This post will help you explore both paths, considering aspects such as job roles, responsibilities, required skills, and the
Constructors are a fundamental concept in Java, used to initialize objects. When you create an instance of a class, a constructor is automatically called. This special method sets the initial state of the object, assigning values to its fields and preparing it for use. Unlike regular methods, constructors don’t have a return type, not even
Polymorphism and Extensibility are two key principles of Object-Oriented Programming (OOP) in Java that allow for more flexible, scalable, and maintainable code. Let’s break down these concepts to understand how they work and why they’re essential for developers. What is Polymorphism? Polymorphism comes from the Greek words “poly” (many) and “morph” (forms). In Java, it
Java Inheritance is a core concept of Object-Oriented Programming (OOP) that allows a class (child) to acquire the properties and behaviors (methods) of another class (parent). This makes the code more reusable, organized, and easy to maintain. When you define a new class in Java, you can make it inherit from an existing class to
What is a Java HashMap? A HashMap in Java is a data structure that stores data in the form of key-value pairs. This means that each piece of data (a value) is associated with a unique identifier (a key). For example, imagine you have a list of student names and their corresponding grades. The names
Java ArrayLists are one of the most flexible and commonly used data structures. They allow you to store elements dynamically, meaning you can add or remove elements without worrying about the initial size of the list. This makes them much more versatile compared to traditional arrays, which have a fixed size. What is an ArrayList?
When writing code, visual feedback can make a big difference in readability and debugging. That’s where color coding comes in, particularly when working in the terminal. By using ANSI color codes, you can enhance your program’s output by adding a splash of color, making it easier to identify certain messages, like errors, warnings, or important
Ascending Sequences with JUnit 5 Testing Understanding Ascending Sequences An ascending sequence is a list of numbers arranged in increasing order. For example, 1, 2, 3, 4 is an ascending sequence. This concept is often used in programming to manage data, track progress, or order tasks logically. Writing a Test for Ascending Sequences with JUnit
For Business Analysts (BAs), understanding technical domains is crucial for effectively bridging the gap between business needs and IT solutions. Two key areas BAs may encounter are Java (a versatile programming language) and Cybersecurity (ensuring the safety of digital systems). This post will compare these domains, highlighting how they influence a Business Analyst’s role and
Object-Oriented Programming (OOP) is a well-established programming paradigm that allows developers to model complex systems by organizing code into reusable, maintainable components. OOP is based on four key principles: Abstraction, Encapsulation, Inheritance, and Polymorphism. Each of these concepts is designed to handle real-world challenges, making software development more efficient and scalable. Comparison Table of OOP
Why Java? Java is one of the most popular programming languages in the world. It is known for its platform independence, reliability, and versatility. Java applications can run on any device that supports the Java Virtual Machine (JVM), making it a preferred choice for developing web, mobile, and enterprise applications. Java for Developers, Testers, and
JavaScript values can be easier to understand when we relate them to everyday scenarios. Let’s explore some of the basic values in JavaScript using simple, real-life examples: 1. NaN (Not a Number) Imagine you’re trying to calculate the average age of a group, but one person mistakenly enters “hello” instead of their age. This error
In JavaScript, two common methods for outputting information are document.write and console.log. Although both can display data, they function differently and are suitable for different scenarios. Let’s break down these differences to understand when to use each. document.write Purpose: document.write adds content directly to the HTML document. When called, it inserts the specified content into
Differences Between document.write and console.log Read Post »
JavaScript strings can sometimes be tricky, especially when it comes to backslashes (\). Let’s explore how this affects drawing a simple tree and learn about string escaping. The Problematic Code console.log(‘ /’); console.log(‘ / ‘); console.log(‘ / ‘); console.log(‘ / ‘); console.log(‘ ——‘); console.log(‘ ||’); At first glance, this code might look correct. However, if
Drawing a Fir Tree in JavaScript & Understanding String Escaping Read Post »
When working with JavaScript, it’s important to know how to declare and use variables. Different keywords (var, let, const, global, and undefined) affect how variables behave in your code. Let’s explore each one. 1. var Declaration: var variableName; Example: function exampleFunction() { var x = 10; var x = 20; // Redeclaration is allowed within
When starting with JavaScript (JS), you’ll quickly notice it has different uses, especially in frontend development and testing. Let’s dive into these two paths to understand what they entail, the tools you can use, and some practical examples to get you started. 1. JS for Frontend Development Frontend development with JavaScript is all about creating
In JavaScript, variables go through a simple lifecycle consisting of three stages: Declaration, Initialization, and Usage. Understanding these stages helps you manage your variables effectively, ensuring your code runs smoothly. Let’s explore each step. 1. Declaration When you declare a variable, you’re telling JavaScript to create a spot in memory for that variable. This is
What is JavaScript? JavaScript (JS) is a popular programming language that runs in web browsers. It helps make websites interactive, like adding animations, forms, and buttons that respond when clicked. When you open a webpage, there’s a good chance JavaScript is working behind the scenes to make the page dynamic and responsive. JavaScript is a