Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Java 9 Programming By Example
  • Table Of Contents Toc
Java 9 Programming By Example

Java 9 Programming By Example

By : Peter Verhas
4.5 (2)
Buy this Book
close
close
Java 9 Programming By Example

Java 9 Programming By Example

4.5 (2)
By: Peter Verhas
Buy this Book

Overview of this book

This book gets you started with essential software development easily and quickly, guiding you through Java’s different facets. By adopting this approach, you can bridge the gap between learning and doing immediately. You will learn the new features of Java 9 quickly and experience a simple and powerful approach to software development. You will be able to use the Java runtime tools, understand the Java environment, and create Java programs. We then cover more simple examples to build your foundation before diving to some complex data structure problems that will solidify your Java 9 skills. With a special focus on modularity and HTTP 2.0, this book will guide you to get employed as a top notch Java developer. By the end of the book, you will have a firm foundation to continue your journey towards becoming a professional Java developer.
Table of Contents (11 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
Getting Started with Java 9
Icon
Getting Started with Java 9
Icon
Getting started with Java
Icon
Installing Java
Icon
Executing jshell
Icon
Packaging classes into a JAR file
Icon
Managing the running Java application
Icon
Using an IDE
Icon
Summary
2
The First Real Java Program - Sorting Names
Icon
The First Real Java Program - Sorting Names
Icon
Getting started with sorting
Icon
Getting started with project structure and build tools
Icon
Setting up the project with Maven
Icon
Coding the sort
Icon
Understanding the algorithm and language constructs
Icon
Compiling and running the program
Icon
Summary
3
Optimizing the Sort - Making Code Professional
Icon
Optimizing the Sort - Making Code Professional
Icon
The general sorting program
Icon
A brief overview of various sorting algorithms
Icon
Project structure and build tools
Icon
Code the sort
Icon
Creating unit tests
Icon
Collections with wrong elements
Icon
Handling exceptions
Icon
Generics
Icon
Test Driven Development
Icon
Implementing QuickSort
Icon
Creating modules
Icon
Summary
4
Mastermind - Creating a Game
Icon
Mastermind - Creating a Game
Icon
The Game
Icon
The model of the game
Icon
Java collections
Icon
Dependency injection
Icon
Implementing the game
Icon
The Game class
Icon
Creating an integration test
Icon
Summary
5
Extending the Game - Run Parallel, Run Faster
chevron up
Icon
Extending the Game - Run Parallel, Run Faster
Icon
How to make Mastermind parallel
Icon
Refactoring
Icon
Processes
Icon
Threads
Icon
Fibers
Icon
java.lang.Thread
Icon
Pitfalls
Icon
ExecutorService
Icon
Variable access
Icon
The CPU heartbeat
Icon
Volatile variables
Icon
Synchronized block
Icon
Wait and notify
Icon
Lock
Icon
Atomic classes
Icon
BlockingQueue
Icon
IntervalGuesser
Icon
ParallelGamePlayer
Icon
Microbenchmarking
Icon
Summary
6
Making Our Game Professional - Do it as a Webapp
Icon
Making Our Game Professional - Do it as a Webapp
Icon
Web and network
Icon
The HTTP protocol
Icon
HTTP/2.0
Icon
Cookies
Icon
Client server and web architecture
Icon
Writing servlets
Icon
Java Server Pages
Icon
HTML, CSS, and JavaScript
Icon
Mastermind servlet
Icon
Running the Jetty web servlet
Icon
Logging
Icon
Other technologies
Icon
Summary
7
Building a Commercial Web Application Using REST
Icon
Building a Commercial Web Application Using REST
Icon
The MyBusiness web shop
Icon
Sample business architecture
Icon
Microservices
Icon
Service interface design
Icon
JSON
Icon
REST
Icon
Model View Controller
Icon
Spring framework
Icon
Service classes
Icon
Compiling and running the application
Icon
Testing the application
Icon
Servlet filters
Icon
Audit logging and AOP
Icon
Dynamic proxy-based AOP
Icon
Summary
8
Extending Our E-Commerce Application
Icon
Extending Our E-Commerce Application
Icon
The MyBusiness ordering
Icon
Setting up the project
Icon
Order controller and DTOs
Icon
Consistency checker
Icon
Annotations
Icon
Using reflection
Icon
Functional programming in Java
Icon
Scripting in Java 9
Icon
Summary
9
Building an Accounting Application Using Reactive Programming
Icon
Building an Accounting Application Using Reactive Programming
Icon
Reactive... what?
Icon
Reactive programming in a nutshell
Icon
Reactive systems
Icon
Reactive streams
Icon
Reactive programming in Java
Icon
Summary
10
Finalizing Java Knowledge to a Professional Level
Icon
Finalizing Java Knowledge to a Professional Level
Icon
Java deep technologies
Icon
Programming in the enterprise
Icon
Summary

Variable access

Now that we can start threads and create code that runs parallel, it is time to talk a little bit about how these threads can exchange data between each other. At first glimpse, it seems fairly simple. The threads use the same shared memory; therefore, they all can read and write all the variables that the Java access protection allows them. This is true, except that some threads may just decide not to read the memory. After all, if they have just recently read the value of some variable, why read it again from the memory to the registers if it was not modified? Who would have modified them? Let's see the following short example:

package packt.java9.by.example.thread; 
  
 public class VolatileDemonstration implements Runnable { 
     private Object o = null; 
     private static final Object NON_NULL = new Object(); 
     @Override 
     public void run() { 
         while( o == null ); 
         System.out.println("o is not null"); 
     } 
     public static void main(String...
Visually different images
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Java 9 Programming By Example
End of Section 5
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist download Download options
font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon