package logiled; import javafx.application.HostServices; public class Mediator{ private HostServices hostServices; public static Mediator getInstance(){ return MediatorHolder.INSTANCE; } public void setInstance(HostServices hostServices){ this.hostServices = hostServices; } private static class MediatorHolder{ private static final Mediator INSTANCE = new Mediator(); } public HostServices getHostServices() { return hostServices; } }