How to detect if an item of JComboBox is highlighted?

Good day.
How to detect if the selected item of a JComboBox is highlighted or not?
Thanks for your response.

the above code can only detect a highlight if an item is selected from the combo box.
But when the focus is transfered to other Combo box it can no longer keep track if the item was highlighted or not.
for example:
combo box 1 combo box 2
item item2
Highlight should be detected wheneverr the focus is transfered from combo box 1 to combo box 2 or vice versa.
case:
Combo box 1 item is highlighted before transfering the focus to combo box 2 item. by the time the focus is transfered , highlight in combox 1 item should be detected.
The main problem here is how to detect if the previously focused item is highlighted or not.
thank you for your time.

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