The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...

Nested classes are classes that are declared as members of other classes or scopes. Nesting classes is one way to better organize your code. For example, say you have a non-nested class (also known as ...

Java is one of the most in-demand programming languages today and is used for the Internet of Things, APIs, in big data technologies, e-commerce websites, scientific applications, and more. It's even ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Jinsong Yu shares deep architectural insights ...

As an alternative to rewriting the same code, many software development environments provide a library tool that organizes frequently used code. Once developers finish debugging some reusable code, ...

Separating localized resources from the source code where they are used is a well-known and approved design. Java's ResourceBundle class from the java.util package provides a straightforward way to ...

Why, of course, by virtually starting up the Java class and pushing the buttons, so to speak. You test a Java class by calling methods on it from another Java class. The following Java source file is ...

A total of 24 JEPs in JDK 24 extend stream processing, introduce quantum-resistant algorithms and provide an API for accessing class files. Java 24 has been released at the start of the JavaOne 2025 ...

Many companies have both Java and .NET developers on code projects, but there’s often a significant communication gap between the two camps. JNBridgePro helps developers bridge that gap. It generates ...

Writing a Java application (see Android) that consumes a JSON API usually involves mapping the JSON objects to Java classes for use in the software. This is a tedious and repetitive task to say the ...