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YOUR NEW APPLICATION IS READY.


WELCOME TO PLAY

Congratulations, you’ve just created a new Play application. This page will help
you with the next few steps.

> You’re using Play 2.8.2


WHY DO YOU SEE THIS PAGE?

The conf/routes file defines a route that tells Play to invoke the
HomeController.index action whenever a browser requests the / URI using the GET
method:

# Home page
GET     /               controllers.HomeController.index

Play has invoked the controllers.HomeController.index method:

public Result index() {
    return ok(index.render("Your new application is ready."));
}

An action method handles the incoming HTTP request, and returns the HTTP result
to send back to the web client. Here we send a 200 OK response, using a template
to fill its content.

The template is defined in the app/views/index.scala.html file and compiled as a
standard Java class.

@(message: String)

  @main("Welcome to Play") {

  @play20.welcome(message, style = "Java")

}

The first line of the template defines the function signature. Here it just
takes a single String parameter. Then this template calls another function
defined in app/views/main.scala.html which displays the HTML layout, and another
function that displays this welcome message. You can freely add any HTML
fragment mixed with Scala code in this file.

> Note that Scala is fully compatible with Java, so if you don’t know Scala
> don’t panic, a Scala statement is very similar to a Java one.

You can read more about Twirl, the template language used by Play, and how Play
handles actions.


ASYNC CONTROLLER

Now that you've seen how Play renders a page, take a look at
AsyncController.java, which shows how to do asynchronous programming when
handling a request. The code is almost exactly the same as HomeController.java,
but instead of returning Result, the action returns CompletionStage<Result> to
Play. When the execution completes, Play can use a thread to render the result
without blocking the thread in the mean time.

Click here for the AsyncController action!

You can read more about asynchronous actions in the documentation.


COUNT CONTROLLER

Both the HomeController and AsyncController are very simple, and typically
controllers present the results of the interaction of several services. As an
example, see the CountController, which shows how to inject a component into a
controller and use the component when handling requests. The count controller
increments every time you click on it, so keep clicking to see the numbers go
up.

You can read more about dependency injection in the documentation.


NEED MORE INFO ON THE CONSOLE?

For more information on the various commands you can run on Play, i.e. running
tests and packaging applications for production, see Using the Play console.


NEED TO SET UP AN IDE?

You can start hacking your application right now using any text editor. Any
changes will be automatically reloaded at each page refresh, including
modifications made to Scala source files.

If you want to set-up your application in IntelliJ IDEA or any other Java IDE,
check the Setting up your preferred IDE page.


NEED MORE DOCUMENTATION?

Play documentation is available at https://www.playframework.com/documentation.

Play comes with lots of example templates showcasing various bits of Play
functionality at https://www.playframework.com/download#examples.


NEED MORE HELP?

Play questions are asked and answered on Stackoverflow using the "playframework"
tag: https://stackoverflow.com/questions/tagged/playframework

The Play Google Group is where Play users come to seek help, announce projects,
and discuss issues and new features. If you don’t have a Google account, you can
still join the mailing list by sending an e-mail to
play-framework+subscribe@googlegroups.com.

Gitter is a real time chat channel, like IRC. The playframework/playframework
channel is used by Play users to discuss the ins and outs of writing great Play
applications.


BROWSE

 * Documentation
 * Browse the Java API


START HERE

 * Using the Play console
 * Setting up your preferred IDE
 * Example Projects


HELP HERE

 * Stack Overflow
 * Mailing List
 * Gitter Channel