java - Closing stage on key release -

i have created vbox in javafx comes pop on application based on hot key combination alt + j. want close vbox when release key combination alt + j. piece of code

final stage dialog = new stage(); eventhandler handler = new eventhandler<keyevent>() {     public void handle( keyevent event )     {         if ( event.isaltdown() && event.getcode() == keycode.j )         {             dialog.initstyle( stagestyle.undecorated );             // dialog.initmodality(modality.application_modal);             vbox dialogvbox = new vbox( 25 );             dialogvbox.getchildren().add( new text( "abc" ) );             scene dialogscene = new scene( dialogvbox, 300, 200 );             dialog.setscene( dialogscene );             dialog.show();         }         else if ( keyevent.key_released.equals( eventrel.isaltdown() && eventrel.getcode() == keycode.j ) )         {             dialog.hide();         }     } };  scene.addeventhandler( keyevent.key_pressed, handler ); 

but not close expected. please guide me vbox close on key release

as per comment created separate handler key release : did not close vbox

eventhandler handlerrel = new eventhandler<keyevent>() {         public void handle(keyevent eventrel) {         //event.consume();                if(keyevent.key_released.equals(eventrel.isaltdown() && eventrel.getcode() == keycode.j))                 {                     system.out.println("inside released");                     dialog.hide();                 }               }};                scene.addeventhandler(keyevent.key_released, handlerrel); 

thanks

you attaching 2 handlers same scene. however, once 2nd scene created, namely dialogscene, becomes active , scene receiving events. therefore, fix solution attach key_released event handler dialogscene , not original scene.

                dialogscene.addeventhandler(keyevent.key_released, event -> {                     if (event.isaltdown() && event.getcode() == keycode.j )                     {                         dialog.hide();                     }                 });