Welcome to the Java 101 study guide. This guide complements " Class and Object Initialization." It provides a glossary of terms specific to that article, new homework, solutions to last month's ...

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

Maximizing code reuse in your Java programs means writing code that is easy to read, understand, and maintain. Here are eight ways to get started.

In this article, we look at the HotSpot Java Virtual Machine, and its implementation in the OpenJDK, both from a VM perspective and also in terms of its interaction with the Java class libraries.

The Mongo object comes from the Java driver written by the guys over at 10gen. This example opens a connection to a local MongoDB instance and uses the mjormIsFun database.

String s1 = new String("Hello world!"); That code will create an s1 string object and a reference variable. As noted, Java strings are immutable. Once created, a string using string class cannot be ...

Oracle has announced the release of Java 24, which adds several new features to the language, such as the availability of the Stream Gatherers API and Class-File API, and new features designed for ...

We discuss how to work with directories, sub-directories, and traverse them using Java and the DirectoryStream method. Learn more.