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  • Book Overview & Buying Learning Java by Building Android  Games
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Learning Java by Building Android  Games

Learning Java by Building Android Games - Second Edition

By : John Horton
4.1 (11)
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Learning Java by Building Android  Games

Learning Java by Building Android Games

4.1 (11)
By: John Horton

Overview of this book

Android is one of the most popular mobile operating systems presently. It uses the most popular programming language, Java, as the primary language for building apps of all types. However, this book is unlike other Android books in that it doesn’t assume that you already have Java proficiency. This new and expanded second edition of Learning Java by Building Android Games shows you how to start building Android games from scratch. The difficulty level will grow steadily as you explore key Java topics, such as variables, loops, methods, object oriented programming, and design patterns, including code and examples that are written for Java 9 and Android P. At each stage, you will put what you’ve learned into practice by developing a game. You will build games such as Minesweeper, Retro Pong, Bullet Hell, and Classic Snake and Scrolling Shooter games. In the later chapters, you will create a time-trial, open-world platform game. By the end of the book, you will not only have grasped Java and Android but will also have developed six cool games for the Android platform.
Table of Contents (28 chapters)
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27
Index

Java Variables

I have already mentioned that variables are our data. Data is simply, values. We can think of a variable as a named storage box. We choose a name, perhaps livesRemaining. These names are kind of like our programmer's window into the memory of the user's Android device.

Variables are values in computer memory ready to be used or altered when necessary by using the name they were given.

Computer memory has a highly complex system of addressing, which fortunately we do not need to interact with because it is handled by the operating system. Java variables allow us to devise our own convenient names for all the data we need our program to work with.

The DVM (Dalvik Virtual Machine) will handle all the technicalities of interacting with the operating system, and the operating system will, in turn, interact with the physical memory, the RAM microchips.

So, we can think of our Android device's memory as a huge warehouse just waiting for us to add our variables. When...

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