Download E-books Scala for Java Developers PDF

Posted On February 2, 2017 at 1:18 am by / Comments Off on Download E-books Scala for Java Developers PDF

By Thomas Alexandre

Build reactive, scalable functions and combine Java code with the ability of Scala

About This Book

  • Learn the syntax interactively to easily transition to Scala by means of reusing your Java code
  • Leverage the entire energy of contemporary net programming via development scalable and reactive applications
  • Easy to keep on with directions and genuine international examples that will help you combine java code and take on sizeable facts challenges

Who This e-book Is For

If you're a Java developer or a Java architect operating with Java EE-based suggestions and need to begin utilizing Scala on your day-by-day programming, then this publication is perfect for you. This publication gets you up and operating fast by way of adopting a practical procedure with real-world code samples. No earlier wisdom of Scala is required.

What you are going to Learn

  • Apply and keep watch over the Scala Ecosystem
  • Migrate Java code to Scala
  • Discover Play Framework internet development
  • Test information utilizing Scala's trying out frameworks
  • Manipulate XML and JSON in Scala
  • Learn the Scala syntax interactively
  • Integrate Java tasks in Scala
  • Build reactive net apps utilizing the Typesafe stack
  • Use new platforms together with the Akka framework, the Play net framework, and the rising Slick framework
  • Tackle titanic information challenges

In Detail

Scala for Java builders is a step by step consultant jam-packed with easy-to-follow code taken from real-world examples explaining the migration and integration of Scala in a Java project.

With this ebook, you'll first get pleased with the Scala syntax and its Java-like surroundings, after which dive into new methods of creating reactive internet apps utilizing the Typesafe stack together with the actor-based Akka framework, the Play net framework, and the rising Slick framework for patience. The publication will then train you the way to check worthy instruments for unit, integration, and practical checking out; show how integrating with exterior structures applies to the Scala international and what its advantages are.

From studying the Scala syntax interactively to writing sleek, scalable, reactive purposes, this ebook might help you to take your talents to the subsequent point through fixing complicated difficulties in a concise and maintainable way.

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Github. mpeltonen" % "sbt-idea" % "1. 6. 0-SNAPSHOT") [ sixty three ] Understanding the Scala surroundings considering that Scala model 2. 10+, NetBeans additionally has its plugin: addSbtPlugin("org. netbeans. nbsbt" % "nbsbt-plugin" % "1. zero. 2") The plugin itself should be downloaded and equipped from a GitHub repository as follows: > git clone git@github. com:dcaoyuan/nbsbt. git > cd nbsbt > sbt fresh bring together publish-local The publish-local command will install it in the community in your filesystem. Then, developing the records to your venture is finished utilizing the subsequent command: > sbt netbeans we will proceed the bankruptcy adopting Eclipse as our IDE, yet many of the instruments must also paintings lower than the opposite IDEs. in addition, if you would like extra integration with different editors reminiscent of ENSIME and elegant textual content, browse the documentation at http://www. scala-sbt. org. as soon as the undertaking is imported into Eclipse, you will note that the dossier constitution is equal to for Maven initiatives; resource documents have the default directories src/main/scala and src/test/scala, and this is often an analogous constitution for Java too. making a internet program that runs on a servlet box one of the transforming into record of accessible SBT plugins is the xsbt-web-plugin (available at https://github. com/JamesEarlDouglas/xsbt-web-plugin), an invaluable plugin to create conventional net apps that runs on a servlet box (such as Jetty). As for the plugins we've got formerly visible, set up comprises including unmarried line to the plugins. sbt dossier as follows: addSbtPlugin("com. earldouglas" % "xsbt-web-plugin" % "0. four. 2") Then, upload the subsequent line to the construct. sbt dossier: seq(webSettings :_*) We additionally have to contain Jetty within the box classpath as follows: libraryDependencies += "org. mortbay. jetty" % "jetty" % "6. 1. 22" % "container" [ sixty four ] Chapter three the entire minimum construct. sbt dossier is given as a precis, as follows: identify := "SampleProject" association := "com. samples" model := "1. zero" scalaVersion := "2. 10. three" seq(webSettings :_*) libraryDependencies += "org. mortbay. jetty" % "jetty" % "6. 1. 22" % "container" libraryDependencies += "javax. servlet" % "servlet-api" % "2. five" % "provided" As we've got up to date our construct dossier with new dependencies, we have to rerun sbteclipse to replace the Eclipse documents for our undertaking. This operation should be completed by means of re-entering from the SBT command urged: > eclipse Let's now write a tiny servlet in Scala within the IDE to show our small pattern good judgment, which mimics the Java syntax. Right-click at the root of the undertaking within the package deal Explorer window, and choose Refresh to ensure the hot dependencies are picked up. the complete constitution of the undertaking is proven within the following screenshot: [ sixty five ] Understanding the Scala atmosphere we will now begin enhancing a brand new Scala dossier lower than src/main/scala (in a brand new com. samples package deal) as follows: package deal com. samples import scala. xml. NodeSeq import javax. servlet. http. _ classification SimpleServlet extends HttpServlet { override def doGet(request: HttpServletRequest, reaction: HttpServletResponse) { reaction.

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