Draft JEP for new Packaging Tool (replacement for javapackager)

[Mario Ivankovits]

Hi!

Just for the records: My test included the JVM startup time. Yours start counting in main() where the JVM is already up - and probably some of the classpath scanning already took place because of the inheritance from „javafx.application.Application“ .
Your test shows „showing: 298 shown: 468“ on my machine.

A „native“ splash screen usually should start up at the very first, before the JVM starts.


Best regards,
Mario


> Am 05.06.2018 um 19:04 schrieb Weiqi Gao <weiqigao at gmail.com>:
> 
> Here's a more accurate (but still rough) timing application:
> 
> import javafx.application.Application;
> import javafx.stage.Stage;
> import javafx.scene.Scene;
> import javafx.scene.control.*;
> import javafx.scene.layout.*;
> 
> public class Main extends Application {
>    private static long t1;
>    private static long t2;
>    private static long t3;
>    private static long t4;
> 
>    public void start(Stage stage) {
>        t2 = System.currentTimeMillis();
>        Label l1 = new Label("main:    " + t1);
>        Label l2 = new Label("start:   " + (t2 - t1));
>        Label l3 = new Label("");
>        Label l4 = new Label("");
>        VBox vbox = new VBox(l1, l2, l3, l4);
>        Scene scene = new Scene(vbox);
>        stage.setScene(scene);
>        stage.setTitle("Timing Demo");
>        stage.setOnShowing(e -> {
>            t3 = System.currentTimeMillis();
>            l3.setText("showing: " + (t3 - t2) + ", " + (t3 - t1));
>        });
>        stage.setOnShown(e -> {
>            t4 = System.currentTimeMillis();
>            l4.setText("shown:   " + (t4 - t3) + ", " + (t4 - t1));
>        });
>        stage.show();
>    }
> 
>    public static void main(String[] args) {
>        t1 = System.currentTimeMillis();
>        launch(args);
>    }
> }
> 
> The result of running it on my Dell laptop with Intel Core i7-6820HQ
> @2.70GHz,CPU and NVIDIA Quadro M1000M display adapter is attached:
> 
> Essentially, it took less than half a second for a dead simple JavaFX Stage
> to be visible.
> 
> Here's the timing number for 10 consecutive runs: 422, 440, 426, 442, 418,
> 441, 432, 444, 470, 453
> 
> --
> Weiqi Gao
> weiqigao at gmail.com
> 
> On Tue, Jun 5, 2018 at 10:46 AM, Scott Palmer <swpalmer at gmail.com> wrote:
> 
>> Yes, my only comment was that if we can get a window up using standard Java
>> GUI frameworks fast enough, then the complexity of adding splashscreen
>> support to the launcher isn't justified.
>> Mario's example shows that is it 1-2 seconds to get a window up.  That is a
>> bit high.  If it was under 1s then I would suggest not bothering, it isn't,
>> so keep it on the list of desired features.
>> 
>> Scott
>> 
>> On Tue, Jun 5, 2018 at 8:21 AM Pedro Duque Vieira <
>> pedro.duquevieira at gmail.com> wrote:
>> 
>>> Sorry, perhaps it was I who misunderstood the debate..
>>> 
>>> On Mon, Jun 4, 2018 at 4:06 PM, Michael Paus <mp at jugs.org> wrote:
>>> 
>>>> Maybe I misunderstood the question but to my opinion the real question
>> is
>>>> whether the new java packager has to provide the support for a splash
>>>> screen
>>>> or not. This has nothing to do with the question whether applications
>>>> should
>>>> have a splash screen or not because if we find that todays Java is fast
>>>> enough
>>>> to display a simple window in less than a second or so, then the Java
>> GUI
>>>> (Swing or JavaFX) could provide a splash screen itself. There is then
>> no
>>>> need
>>>> for an additional mechanism provided my the packager.
>>>> 
>>>> Am 04.06.18 um 16:44 schrieb Pedro Duque Vieira:
>>>> 
>>>> Hi,
>>>>> 
>>>>> I agree with Johan and others, a splash screen is valuable and needed.
>>>>> 
>>>>> Microsoft applications that run on Windows itself (think Word, Excel,
>>>>> etc),
>>>>> they have a splash screen, Intelllij has a splash screen (it's swing
>>> based
>>>>> AFAIK), etc.. If a Microsoft application running on its own operating
>>>>> system needs a splash screen then chances are pretty high that there
>>> will
>>>>> be Java apps that'll need a splash screen.
>>>>> 
>>>>> Cheers,
>>>>> 
>>>>> 
>>>>> 
>>>> 
>>> 
>>> 
>>> --
>>> Pedro Duque Vieira
>>> 
>> 
> 
> 
> 
> -- 
> Weiqi Gao (高为奇)
> weiqigao at gmail.com
> http://weiqigao.blogspot.com/