How do I add a separator to a JComboBox in Java?

java swing jcombobox jseparator
Alfred B. Thordarson picture Alfred B. Thordarson · Sep 26, 2008 · Viewed 10.5k times · Source

I have a JComboBox and would like to have a separator in the list of elements. How do I do this in Java?

A sample scenario where this would come in handy is when making a combobox for font-family-selection; similar to the font-family-selection-control in Word and Excel. In this case I would like to show the most-used-fonts at the top, then a separator and finally all font-families below the separator in alphabetical order.

Can anyone help me with how to do this or is this not possible in Java?

Answer

pfranza picture pfranza · Sep 26, 2008

There is a pretty short tutorial with an example that shows how to use a custom ListCellRenderer on java2s http://www.java2s.com/Code/Java/Swing-Components/BlockComboBoxExample.htm

Basically it involves inserting a known placeholder in your list model and when you detect the placeholder in the ListCellRenderer you return an instance of 'new JSeparator(JSeparator.HORIZONTAL)'

Related questions

JComboBox Selection Change Listener?

I'm trying to get an event to fire whenever a choice is made from a JComboBox. The problem I'm having is that there is no obvious addSelectionListener() method. I've tried to use actionPerformed(), but it never fires. Short of overriding …

Read More
How to set selected index JComboBox by value

I want to set the selected index in a JComboBox by the value not the index. How to do that? Example public class ComboItem { private String value; private String label; public ComboItem(String value, String label) { this.value = value; this.…

Read More
How do I populate a JComboBox with an ArrayList?

I need to populate a JComboBox with an ArrayList. Is there any way to do this?

Read More