You can use several strategies but the simplest one would be to use
TableLayout roughly like this:
TableLayout tl = new TableLayout(NUMBER_OF_BUTTONS, 1);
Container f1 = new Container(tl);
f1.add(tl.cc().ha(CENTER).wp(100), play);
f1.add(tl.cc().ha(CENTER), movie);
Notice the other lines
Maybe you should use BorderLayout so you can place the f1 container in the
center of it.
https://www.codenameone.com/javadoc/com/codename1/ui/layouts/BorderLayout.html
Container f1 = new Container(BoxLayout.y());
Container blContainer = new Container(new BorderLayout());
Button
