Tag: Java

Computing power and performance have skyrocketed since their invention. The number of cores and their potentials are like nothing before, giving your application infinite possibilities. Despite the vast improvement, a single-threaded application can only utilize a maximum of one core and cannot bene...

JavaScript : Tricks You Should Know The ternary operator let hungry = true; let eat; if (hungry === true) { eat = 'yes'; } else { eat = 'no'; }   Read More

JetBrains, the genius folks who gave us IntelliJ IDEA, pulls back the curtain on Kotlin — a fresh-faced, eager programming language ready to take on the world. Fast-forward a decade, and this rookie has carved out a niche in the coding big leagues, securing a spot in the TIOBE Index&rs...

I started learning Java in 1997. I thought initially Java would be a fad and that Smalltalk would emerge as the victor in the battle for object-oriented programmer productivity over C++. I was wrong. In the great object-oriented battles in the 1990s between C++ and Smalltalk, Java emerged as the vic...

Java 21 brings in a lot of cool features, and one of them is the String Templates. While it serves more purposes than just classic String interpolation, for us Java developers, it’s yet another way to concatenate Strings in a “proper” way. What is proper, though? I pok...

In this overview, I want to show you some of the tools I use daily and find very useful. Some of them are strictly related to development in Java some are more general, so even if you don’t use Java, there is a hope that you will find something interesting here! Integrated Development Envir...

Security is a paramount concern for any application. Ensuring that your system’s resources are accessed only by the right people is essential. In the Java Spring framework, several annotations enable developers to handle security. One of them is the @RolesAllowed annotation, which pr...

Secrets of Clean Code: A Journey through Java Best Practices for Ongoing Coding Mastery   Writing professional and clean Java code is essential for any Java developer who wants to unleash the full potential of their software. I’ll be discussing seemingly small details, yet they h...

“Everything Bad is Good for You” is a pop culture book that points out that some things we assume are bad (like TV) have tremendous benefits to our well-being. I love the premise of disrupting the conventional narrative and was reminded of that constantly when debating some of ...

JetBrains, the genius folks who gave us IntelliJ IDEA, pulls back the curtain on Kotlin — a fresh-faced, eager programming language ready to take on the world. Fast-forward a decade, and this rookie has carved out a niche in the coding big leagues, securing a spot in the TIOBE Index&rs...

Writing professional and clean Java code is essential for any Java developer who wants to unleash the full potential of their software. I’ll be discussing seemingly small details, yet they hold tremendous importance and have the potential to transform you into a highly efficient engineer. ...

Sometimes, You’re on Your Own Every once in a while, we are required as application developers to roll up our sleeves and find ways to squeeze performance or memory savings beyond the built-in capabilities of our language and libraries. I started programming professionally in DOS/Clipper...

A typical use case for nested ifs: you want to perform all sorts of checks on some data to make sure it’s valid before finally doing something useful with it. Don’t do this! : // JavaScript function sendMoney(account, amount) { if (account.balance > amount) { if (am...

In the swiftly evolving realm of mobile app creation, the choices you make regarding technology wield substantial influence over your project’s triumph and efficiency. Within the domain of Android app development, a handful of alternatives rise to prominence: Java, Kotlin, Flutter, and Re...

In the world of Android app development, making network requests to fetch data from APIs is a common task. Retrofit is a powerful and popular library that simplifies this process by providing a clean and efficient way to make API calls. In this tutorial, we’ll walk through how to use Retrofit ...

Add gradle.properties android.useAndroidX=true android.nonTransitiveRClass=true android.enableJetifier=true 2. Add in app build.gradle dependencies implementation 'com.google.android.exoplayer:exoplayer:r2.4.0' implementation 'com.google.android.exoplayer:exoplayer-c...

In the 2017 Google I/O conference, Kotlin was announced as an official language for Android app development. it is a powerful and versatile language that is well-suited for a variety of development tasks. Also, Kotlin is interoperable with Java, making it easy to convert existing Java code...

Kotlin is an influential programming language that combines both the functional and object-oriented programming paradigms. It is notably known for its succinct syntax and its seamless interoperability with Java. This has made Kotlin a popular choice for Android development. If you’re preparing...

Java was first released, and over the years, it has undergone significant changes. I started working with Java in the early 2000s, using J2SE 1.3, which lacked features that are now commonplace. Java 5 introduced generics, “for each” loops, annotations, autoboxing, and unboxing, resultin...

Java introduced the `Optional` class in Java 8 to better handle null references. Optional is a container object that may or may not hold a value. The class then provides methods to operator on the data that it may contain. An Optional can be created for any data type in Java. For primitive data t...

JetBrains, the genius folks who gave us IntelliJ IDEA, pulls back the curtain on Kotlin — a fresh-faced, eager programming language ready to take on the world. Fast-forward a decade, and this rookie has carved out a niche in the coding big leagues, securing a spot in the TIOBE Index&rs...

Java 21 brings in a lot of cool features, and one of them is the String Templates. While it serves more purposes than just classic String interpolation, for us Java developers, it’s yet another way to concatenate Strings in a “proper” way. What is proper, though? I pok...

When ever I was looking into the typescript Date class constructor implementation, I always wondered how its constructor signature worked like that, how it can have many signature, how can it work with 1st argument as number or string or an instance of itself. Every time I tried to implement the con...

Swift stands as a contemporary and robust programming language that Apple designed for crafting applications across its suite of devices. What sets Swift apart is its blend of performance and security, all wrapped in a clear and expressive syntax. Notably, it prioritizes safety through mechanisms li...

Last week, I decided to code using Rust . I’ve followed Rust since its initial version, reading many sources, and cases, and exploring its ecosystem such as any available libraries, and I have to admit, that the progress is really fast and rich. For context, I’m a programmer...

DTOs are Java classes that contain data and have no behavior. They’re used to transfer data between layers of an application, such as between a controller and a service layer. DTOs are often used to encapsulate data and provide a layer of abstraction between the layers of an application....

The Java programming language is famous for being Object Oriented, and infamous for being verbose and full of checked exceptions. When the Java language designers introduced Functional Programming abilities into the language with version 1.8, it wasn’t immediately understood how that would hel...

Java is a popular programming language that is widely used for developing complex applications. However, one of the common issues with Java programs is high memory usage, which can lead to performance issues and even crashes. Therefore, it is important to use memory-saving techniques to optimiz...

I was amazed with the amount of posts about Java 21, its new ( and severals) features, its previews, etc. some of them are very interesting and necessary, but others I saw as an unnecessary way of be more closer to other languages that have taken away a bit of the market share, for example Unnamed C...

Hi everyone. Alongside the current bootcamp I am assisting, I decided to follow along some other projects with the intention of gaining hands on experience on DevOps related tools and applications. The DevOps series I will be following can be found here: YouTube About Maven: Maven is c...

Containers bring new flexibility and agility to software development and deployment. However, they also introduce a new attack surface that malicious actors can exploit. A compromised container can give an attacker access to other containers and even the host system. Smaller images that contain fewe...

So your pretty good at Spring Boot Java development, have a good idea of how AWS EC2 instances work and now want to try a bit of automation to make things go smoother. I’ve always wanted to get away from the AWS Console to create an EC2 instance, in my perfect view I will just run a script ...

JetBrains, the genius folks who gave us IntelliJ IDEA, pulls back the curtain on Kotlin — a fresh-faced, eager programming language ready to take on the world. Fast-forward a decade, and this rookie has carved out a niche in the coding big leagues, securing a spot in the TIOBE Index&rs...

Hi everyone, I am back with another hand on DevOps lab. In this lab we will learn how to install Tomcat and deploy a Java application. In the last lab we installed, built and deployed an application using Maven. We will be building from the last lab in where we wi...

To download Java rules from an already running SonarQube instance, you typically don’t need to download the rules separately. SonarQube stores and manages its rules within its database, and you access and configure them through the SonarQube web interface. Here are the steps to access and mana...

wondering how to install Java and set up the JAVA_HOME path. Java is a versatile programming language that’s used in various applications, and having it properly installed on your macOS is essential for developers and tech enthusiasts. In this guide, we’ll walk you through the steps to g...

Introduction to JDK in Java Java is a versatile and widely-used programming language known for its portability and compatibility across various platforms. Whether you’re a seasoned developer or just starting your coding journey, understanding the fundamentals of Java Development Kit (JDK) i...

Java is a popular programming language used for developing enterprise applications, mobile applications, and web applications. With the increasing demand for Java professionals in the IT industry, it is essential to have a good understanding of advanced Java concepts. The Advanced Java course offere...