Android Authority

Java tutorial for beginners: Write a simple app with no previous experience

Java is one of the most in-demand programming languages in the world and one of the two official programming languages used in Android development (the other being Kotlin). Developers familiar with ...
Android Authority

Java tutorial for beginners, part 2

In part 1 of this series, Gary uploaded an awesome post and video explaining the basics of Java programming. Java is the official programming language of Android; so if you want to build fully-fledged ...
TheServerSide

Java records tutorial

The most significant addition to the Java language since Sun Microsystems rewrote the collections API for Java 5 is the introduction of Java records. Java records address two significant pain points ...
TheServerSide

Java, JDBC and the HSQLDB database tutorial

Community driven content discussing all aspects of software development from DevOps to design patterns. The easiest way for a Java developer to learn Java Database Connectivity (JDBC) is to experiment ...
InfoWorld

Class and object initialization in Java

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...
InfoWorld

Regular Expressions in Groovy (via Java)

The people who attended my presentations at RMOUG Training Days 2010 asked several good questions. One question that was asked in the Groovy presentation that I really wish I had included a slide on ...