You’ve read about how linear layouts work in Android. Test your new skills with these progressive challenges involving linear layout controls and solidify...

Understanding layouts is important for good Android application design. In this tutorial, you learn all about linear layouts, which organize user interface...

You’ve read about how Strings work in Java. Test your new skills with this challenge: solve this String-based puzzle to help you solidify your knowledge of...

In this tutorial, you’ll learn to work with dates and times in Java and within Android applications. Date and time data can be determined, modified, and...

This quick tip shows you the steps to create a simple Button or ImageButton control in your Android application. First, you learn how to add button controls...

In this tutorial, you’ll become familiar with one of the most important programming data structures (types) in Java—the String. String variables can be used...

This quick lesson covers Javadoc, a helpful tool for generating documentation from your Java source files. This lesson is part of an ongoing series of...

Understanding layouts is important for good Android application design. In this tutorial, we provide an overview of how layouts fit into the Android...

This quick lesson discusses a number of tips for working with inner classes in Java. This lesson is part of an ongoing series of tutorials for developers...

In this tutorial, you’ll become familiar with the concept of inner classes in Java—those classes whose scope and definition are encompassed within another...

You’ve read about how iteration works in Java. Test your new skills with this challenge: five progressively difficult exercises that help you solidify your...

In this tutorial, you’ll become familiar with the concept of Java reflection: the ability of a class or object to examine details about its own...