Threading refers to the practice of executing programming processes concurrently to improve application performance. While it's not that common to work with threads directly in business applications, they're used all the time in Java frameworks. As an example, frameworks that process a large volume of information use threads to manage data. Manipulating threads or CPU processes concurrently improves performance, resulting in faster, more efficient programs. This article introduces you to some basics of traditional Java threads and thread execution in the Java virtual machine. See the InfoWorld ..read more

Java 22 introduces stream gatherers, a new mechanism for manipulating streams of data. Stream gatherers are the delivered feature for JEP 461, allowing developers to create custom intermediate operators that simplify complex operations. At first glance, stream gatherers seem a bit complex and obscure, and you might wonder why you'd need them. But when you are confronted with a situation that requires a certain kind of stream manipulation, gatherers become an obvious and welcome addition to the Stream API. To read this article in full, please click here ..read more

The OpenJDK’s Project Leyden, an effort to improve the startup time, time to peak performance, and footprint of Java programs, has published its first early-access build. Accessible from java.jdk.net, the initial Project Leyden release focuses on improving application startup time, according to a June 24 bulletin on the Oracle Java team’s Inside Java website. Other Leyden optimizations will be explored in future releases. The easiest way to start with Leyden features is by using the java program in the Leyden Early Access Release with the -XX:CacheDataStore flag. Project Leyden is sponsored by ..read more

Not long ago, we looked at how to build an HTMX application with JavaScript. HTMX also works with Java, so now we'll try that out using Spring Boot and Thymeleaf. This awesome stack gives you all the power and versatility of Java with Spring, combined with the ingenious simplicity of HTMX. HTMX: A rising star HTMX is a newer technology that takes plain old HTML and gives it extra powers like Ajax and DOM swaps. It’s included in my personal list of good ideas because it eliminates a whole realm of complexity from the typical web app. HTMX works by converting back and forth between JSON and ..read more

Polymorphism—or an object's ability to execute specialized actions based on its type—is what makes Java code flexible. Many design patterns created by the Gang Of Four rely on some form of polymorphism, including the Command pattern. In this article, you will learn the basics of Java polymorphism and how to use it in your programs. Things to know about Java polymorphism Polymorphism and Java inheritance Why polymorphism is important Polymorphism in method overriding Polymorphism with the core Java classes Polymorphic method calls and casting Reserved keywords and polymorphism Common mistakes ..read more

Java’s sun.misc.Unsafe class has been in use since 2002. It provides essential low-level methods that framework developers use to deliver otherwise unobtainable features and performance. Unfortunately, Unsafe also has long-standing problems related to JVM maintainability. And, as the name implies, it isn't exactly safe to use. A newer JEP proposes to remove sun.misc.Unsafe's memory access methods in a future Java release. But what will replace them? To read this article in full, please click here ..read more

In this tutorial, you will learn how to write expressions for your Java programs. In many cases, you'll use operators to write your Java expressions, and there are many operator types to know how to use. I'll briefly introduce Java's operator types, including the additive, bitwise, logical, conditional, shift, and equality types and their operands. You'll also learn about operator overloading and operator precedence, and you'll see a demonstration of primitive-type conversion. I'll conclude with a small Java program that you can use to practice primitive-type conversions on your ..read more

When the browser began, it was just a window for displaying some text and maybe a few images. It was just a new way to distribute the same kind of documents that you might find on a coffee table, like magazines or books. Java, JavaScript, and CSS changed all that. Just adding a bit of Turing-complete functionality was all it took, and clever programmers found ways to duplicate word processors, games, and more inside what once was a container for words and pictures sitting still. To read this article in full, please click here ..read more

Many programming languages allow passing objects by reference or by value. In Java, we can only pass object parameters by value. This imposes limits and also raises questions. For instance, if the parameter value is changed in the method, what happens to the value following method execution? You may also wonder how Java manages object values in the memory heap. This article helps you resolve these and other common questions about object references in Java. Passing object references in Java In this article you'll learn the difference between passing by reference and passing by value i ..read more

Quarkus 3.11, the latest version of the Red Hat-sponsored Kubernetes-native Java framework, has been released. The update introduces dev extensions for observability and an experimental WebSockets extension. Quarkus 3.11 was announced May 29. Developers can update by using the latest version of the Quarkus CLI and running quarkus update. Discussing the dev extensions for observability in a blog post, Red Hat software engineer Guillaume Smet noted efforts have been made to simplify the setup of development resources for observability, including resources for Grafana, Jaeger, OTel, and VictoriaM ..read more