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Scala for Java Developers

Scala for Java Developers

By : Thomas Alexandre
4.3 (16)
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Scala for Java Developers

Scala for Java Developers

4.3 (16)
By: Thomas Alexandre

Overview of this book

Table of Contents (19 chapters)
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Scala for Java Developers
Scala for Java Developers
Credits
Credits
Foreword
Foreword
About the Author
About the Author
Acknowledgments
Acknowledgments
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Programming Interactively within Your Project
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Programming Interactively within Your Project
Advantages of using Scala for Java projects
Learning Scala through the REPL
Operations on collections
Summary
2
Code Integration
Code Integration
Creating a REST API from an existing database
Adding a test in Scala
Setting up Scala within a Java Maven project
Scala and Java collaboration
Differences in style between Java and Scala code
Summary
3
Understanding the Scala Ecosystem
Understanding the Scala Ecosystem
Inheriting Java Integrated Development Environments (IDEs)
Building with Simple Build Tool (SBT)
Experimenting with Scala Worksheets
Working with HTTP
Taking advantage of Typesafe Activator
The REPL as a scripting engine
Summary
4
Testing Tools
Testing Tools
Writing tests with ScalaTest
Testing with ScalaCheck
Summary
5
Getting Started with the Play Framework
Getting Started with the Play Framework
Getting started with the classic Play distribution
Getting started with the Typesafe Activator
Architecture of a Play application
Playing with authentication
Practical tips when using Play
Summary
6
Database Access and the Future of ORM
Database Access and the Future of ORM
Integrating an existing ORM – Hibernate and JPA
Dealing with persistence in the Play Framework
Replacing ORM
Learning about Slick
Scaffolding a Play application
Summary
7
Working with Integration and Web Services
Working with Integration and Web Services
Binding XML data in Scala
Working with XML and JSON
Handling Play requests with XML and JSON
Summary
8
Essential Properties of Modern Applications – Asynchrony and Concurrency
Essential Properties of Modern Applications – Asynchrony and Concurrency
The pillars of Concurrency
The Async library – SIP-22-Async
Getting started with Akka
Summary
9
Building Reactive Web Applications
Building Reactive Web Applications
Describing reactive applications
Handling streams reactively
Experimenting with WebSockets and Iteratees in Play
Learning from activator templates
Playing with Actor Room
Summary
10
Scala Goodies
Scala Goodies
Exploring MongoDB
Scratching the surface of Big Data
Introducing DSLs in Scala
Introducing Scala.js
Final tips
Summary
Index
Index

Chapter 1. Programming Interactively within Your Project

Moving away from a well established and mature language such as Java requires some pretty good reasons. Before pragmatically trying out some of the apparent differences between Java and Scala in order to get acquainted with the Scala syntax, we are going to clarify what makes Scala so attractive.

In this chapter, we will cover the following topics:

  • The advantages of using Scala for Java projects

  • Getting familiar with the syntax of the language through a crash course following an interactive session, including case classes, operations on collections, and a glimpse of some useful features such as options, tuples, maps, pattern matching, and string interpolation

End of Section 1
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