package controllers;

import play.*;
import play.mvc.*;
import play.db.jpa.*;

import views.html.*;

public class Application extends Controller {
    public Result index() {
        return ok(index.render("System started"));
    }

}

package controllers;

import play.*;
import play.mvc.*;
import play.db.jpa.*;

import views.html.*;

public class Application extends Controller {
    public Result index() {
        return ok(index.render("Hello World!"));
    }

}

--- 
+++ 
@@ -8,7 +8,7 @@
 
 public class Application extends Controller {
     public Result index() {
-        return ok(index.render("Hello World!"));
+        return ok(index.render("System started"));
     }
 
 }
Replace Hello World with something more professional
