java - Adding a JScrollPane to a JMenu

Question

I have a JMenu which will include JMenuItems that are generated on start-up from a database. As such, it's quite likely that the menu will be too large and run off the screen.

As such, I am trying to add a JScrollPane to the JMenu.

Example, to the effect of;

JMenu employeesMenu = new JMenu("Employees");
JScrollPane emScroll = new JScrollPane();
JList contents = new JList();

contents.add(new JRadioButton("1"));
contents.add(new JRadioButton("2"));
contents.add(new JRadioButton("3"));
// ... etc

emScroll.add(contents);
employeesMenu.add(emScroll);

Now, my understanding is that a JMenu's contents are stored in a JList inside a JPopupMenu. So my question now is, what is a way of forcing that JList into a JScrollPane? Alternatively, is it possible to use a JScrollBar instead? Any input appreciated.

question from:https://stackoverflow.com/questions/65545543/how-do-i-create-a-scrolling-jmenu

Answer 1

Maybe you can use Darryl's Menu Scroller approach. It adds arrow buttons at the top/bottom of the menu when required.