BAEL-3059: Update Play Framework (#7674)

* Implementation of Introduction to Play Framework in Java

* Implementation of Introduction to Play Framework in Java

* Implementation of Introduction to Play Framework in Java

* Implementation of the tutorial for Introduction to Play Framework.

* Updated code for Play Routing to 2.7.3

* Updated code for Play Routing to 2.7.3

* Initial Commit

* Added request object to create end point

* Finished implementing student-api

* Finished implementing student-api

* Implementation of the tutorial for Introduction to Play Framework.

* Updated test names

* Removed Lombok dependency

* Corrected isSuccessful spelling and removed the +1 on student ids

play-framework/introduction/app/controllers/HomeController.java

@@ -1,14 +1,25 @@
 package controllers;
 
+import play.libs.concurrent.HttpExecutionContext;
 import play.mvc.*;
+import play.twirl.api.Html;
 
-import views.html.*;
+import javax.inject.Inject;
+import java.util.concurrent.CompletionStage;
+
+import static java.util.concurrent.CompletableFuture.supplyAsync;
 
 /**
  * This controller contains an action to handle HTTP requests
  * to the application's home page.
  */
 public class HomeController extends Controller {
+    private HttpExecutionContext ec;
+
+    @Inject
+    public HomeController(HttpExecutionContext ec) {
+        this.ec = ec;
+    }
 
     /**
      * An action that renders an HTML page with a welcome message.
@@ -17,7 +28,41 @@ public class HomeController extends Controller {
      * <code>GET</code> request with a path of <code>/</code>.
      */
     public Result index() {
-        return ok(index.render("Your new application is ready."));
+        return ok(views.html.index.render());
     }
 
+    public Result applyHtml() {
+        return ok(Html.apply("<h1>This text will appear as a heading 1</h1>"));
+    }
+
+    public Result badRequestPage() {
+        return badRequest("Your request data has issues.");
+    }
+
+    public Result notFoundPage() {
+        return notFound("Could not find the page you requested.");
+    }
+
+    public Result customContentType() {
+        return ok("This is some text content").as("text/html");
+    }
+
+    public CompletionStage<Result> asyncOperation() {
+        return supplyAsync(() -> {
+            return longRunningTask();
+        }, ec.current())
+                .thenApplyAsync(s -> {
+                    return ok("Got result -> " + s);
+                }, ec.current());
+    }
+
+    private String longRunningTask() {
+        return "Long running task has completed";
+    }
+
+    public Result setHeaders() {
+        return ok("This is some text content")
+                .as("text/html")
+                .withHeader("Header-Key", "Some value");
+    }
 }