Below you'll find a list of all posts that have been tagged as “Java”
Logging is an important topic in software development, especially if you need to analyze bugs and other unexpected events in your production environment. Implementing your logging often seems easy. But as you probably experienced yourself, logging is far more complex than it might seem. That’s why you can find lots of articles about it here on the blog. As an …
What Is SLF4J and What are the Benefits of Using It? One of the most important aspects of developing an efficient system is to have clean, helpful logs that will help you understand what errors are being triggered, and what information is being processed. When you are first creating an application, you might not know what logging framework will be …
If you want to write a Java web application, the first thing you’ll need to do is make a difficult decision: choosing the Java application server on which your application will run. This is a tough choice because there are many outstanding ones out there, and the differences between them aren’t always obvious. It’s easy to wind up in a state of …
If you ever had to analyze an issue in production, I’m sure you know how important it is to have good logging. Good logging requires three things: The log messages need to provide the required information to understand what the application does internally. Writing log messages has to be as efficient as possible so that it doesn’t affect the performance …
Java is an object-oriented programming language. It provides support for various mechanisms such as exception handling. This feature of Java enables developers to manage the runtime errors caused by the exceptions. In this article, you will learn about exceptions in Java. You will also learn about different types of exceptions in Java. Exceptions are the unwanted errors or bugs or …
One of the biggest nightmares for all developers is to debug their code. Debugging code written in Java is a tough task. Debugging is the process of determining and fixing bugs or errors present in the code, project, or application. Debugging your application helps you improve the quality of the code. It is a must-have skill for every Java programmer. …
If you want to be a developer, create applications, or learn how to code, then Java is the best programming language to work with. In this article, we will introduce some of the best Java tutorials for beginners as well as advanced programmers. These tutorials will help you to learn and nourish your programming skills in Java. But first, we’ll …
There are numerous database systems that take a non-tabular NoSQL approach to handle data management. One of the most popular is MongoDB, which is used in various industries. While MongoDB is only the playground for Ruby on Rails or Node.js developers, using MongoDB with a modern Java framework like Spring Boot results in a powerful tool in the problem-solving arsenal. …
Java 10 overview March 2018 saw the latest semi-annual release of Java: Java 10. In this article, we’ll examine the big changes introduced in this version, as well as talk about some of the smaller improvements that will make life easier for developers and ops alike. Java 10: Big changes The two big stories in Java 10 are: the new …
While we all started to learn how to code with HTML, developing a sophisticated app requires a more advanced language. Java and Python are two of the hottest programming languages in the market right now because of their versatility, efficiency, and automation capabilities. Both languages have their merits and their flaws, but the main difference is that Java is statically …
The service locator pattern is a relatively old pattern that was very popular with Java EE. Martin Fowler described it in 2004 on his blog. The goal of this pattern is to improve the modularity of your application by removing the dependency between the client and the implementation of an interface. Interfaces are one of the most flexible and powerful …
When developing an application, chances are that it won’t perform as expected on the first run. In order to check what went wrong, developers in general use debuggers. But experienced developers know that if it happens in production, most debuggers won’t be available. Hence, they pepper the source code with logging statements to help their future self debug the next …
The SOLID design principles were promoted by Robert C. Martin and are some of the best-known design principles in object-oriented software development. SOLID is a mnemonic acronym for the following five principles: Single Responsibility Principle Open/Closed Principle Liskov Substitution Principle Interface Segregation Principle Dependency Inversion Principle Each of these principles can stand on its own and has the goal to …
Introduction to optional parameters in Java Unlike some languages such as Kotlin and Python, Java doesn’t provide built-in support for optional parameter values. Callers of a method must supply all of the variables defined in the method declaration. In this article, we’ll explore some strategies for dealing with optional parameters in Java. We’ll look at the strengths and weaknesses of …
Stack traces are probably one of the most common things you’re regularly running into while working as a Java developer. When unhandled exceptions are thrown, stack traces are simply printed to the console by default. Nevertheless, it’s easy to only have a surface-level understanding of what these are and how to use them. This article will shed light on the …
The Interface Segregation Principle is one of Robert C. Martin’s SOLID design principles. Even though these principles are several years old, they are still as important as they were when he published them for the first time. You might even argue that the microservices architectural style increased their importance because you can apply these principles also to microservices. Robert C. …
The Open/Closed Principle, which I explained in a previous article, is one of the key concepts in OOP that enables you to write robust, maintainable and reusable software components. But following the rules of that principle alone is not enough to ensure that you can change one part of your system without breaking other parts. Your classes and interfaces also …
A Brief History of EJB By 1996, Java had already become popular among developer for its friendly APIs and automated Garbage Collection and was starting to be widely used in back-end systems. One problem, however, was that most of these systems needed the same set of standard capabilities – such as persistence, transaction integrity, and concurrency control – which the …
The Open/Closed Principle is one of five design principles for object-oriented software development described by Robert C. Martin. They are best known as the SOLID principles: Single Responsibility Principle Open/Closed Principle Liskov Substitution Principle Interface Segregation Principle Dependency Inversion All 5 of these design principles are broadly used, and all experienced software developers should be familiar with them. But don’t worry, …
