How to reload an Application in JavaFX?

Question

I have a small game which has New Game button. There are many variables which need reset when the New Game button is pressed. Is there any method which can easily reload the whole application or any alternative to refresh the scene, stage or variables? I just want to bring the application to it's initial stage when It's first loaded.

I went through different topics on internet and read many questions and answers here also, but I there is no easy method to implement it. Most of the answers suggest to reuse the whole code or put the whole code in class and reload it.

Questions reviewed:

Oliver Jan Krylow · Accepted Answer · 2018-06-25T14:30:12.517

13

I would certainly recommend a clean approach as discussed in the questions you linked.

A quick and dirty way however might be the following:

restartButton.setOnAction( __ ->
{
  System.out.println( "Restarting app!" );
  primaryStage.close();
  Platform.runLater( () -> new ReloadApp().start( new Stage() ) );
} );

Close the main stage, create a new one and pass it to a new instance of your App. I cannot make any guarantees about the memory behavior of this hack. Use it carefully.

Full example: https://gist.github.com/bugabinga/ce9e0ae2328ba34133bd

edited Jun 25 '18 at 14:30

answered Mar 08 '16 at 09:05

Oliver Jan Krylow

1,758
15
22

1

Thanks, 2 years later, this has really helped in implementing a `debug` toggle switch. I agree with your "use it carefully" caveat! – StuPointerException Jun 24 '18 at 20:55
Kool :) definitly let us now when this blows up ;P – Oliver Jan Krylow Jun 25 '18 at 14:31

score 0 · Answer 2 · answered Aug 08 '17 at 08:22

0

for reload application you must create new instance of your main class and call the start method of it with stage parameter.for example

restartButton.setOnAction(e->{yourAPP app=new yourApp();
app.start(yourStage);});

answered Aug 08 '17 at 08:22

user3235815

91
7

How to reload an Application in JavaFX?

2 Answers2

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