private static void closeSplashScreen() {

		// we have another Java window shown, hide this splash screen so that we
		// don't obscure modal dialogs
		if (splashWindow != null) {
			splashWindow.setVisible(false);
			splashWindow.dispose();
			splashWindow = null;
		}
	}
Show the splash screen on the Swing thread now.  This will block.
@return the new splash screen
Ghidra/Framework/Docking/src/main/java/docking/framework/SplashScreen.java