How do I lose focus on a JComboBox?

Question

I have a JComboBox with an key listener.

When I hit <enter>, I fire off some action, and then I need to to lose focus on the JComboBox!

To focus on it, I can do JComboBoxObject.grabFocus();

But doing transferFocus() to get the focus to a next element (I don't care WHERE the focus goes, just away from combo box) does NOT work.

Doing grabFocus() from another combo box works, but seems like a pretty annoying hack to me. Is there a better solution?

unrelated: sigh ... don't use keylisteners .. related: transferFocus (used on the currently focused compoent) should work, if it doesn't better show a SSCCE demonstrating what _exactly_ you are doing/trying to achieve. BTW, you did read the tutorial on how to use JComboBox, didn't you? It has something to say on low-level listeners and (potentially - you can't really know) compound components :-) — kleopatra, Aug 07 '13 at 19:20

score 3 · Answer 1 · edited May 23 '17 at 11:53

3

Updated: Starting from this two-combo example, adding either of these lines to the actionPerformed() implementation seems to do what you want.

combo1.transferFocus();
combo2.requestFocusInWindow();

edited May 23 '17 at 11:53

Community

1
1

answered Aug 07 '13 at 18:55

trashgod

203,806
29
246
1,045

you don't really recommend hard-coding the other component, do you :-) – kleopatra Aug 07 '13 at 19:23
@kleopatra is right: I took "don't care" a bit too literally; you should ask the `FocusTraversalPolicy` of the enclosing `Container`, as the deprecated `getNextFocusableComponent()` API suggests. – trashgod Aug 07 '13 at 19:32
2

actually, asking the traversalPolicy is too low-level (you would have to walk up until you find the one that's applicable, also checking the isTraversalPolicyProvider properties and other thingies that I don't remember) - component.transferFocus should just work fine. – kleopatra Aug 07 '13 at 19:40

MMujtabaRoohani · Accepted Answer · 2013-08-07T21:24:41.917

3

I can suggest you to first use the

.getNextFocusableComponent()

and then use the

.requestFocusInWindow()

that means Implementing it like this,

JComboBox.getNextFocusableComponent().requestFocusInWindow();

One important note is that .getNextFocusableComponent() has become obsolete but it can work really better, you can use it but If you have any other solution, I would prefer not using this.

edited Aug 07 '13 at 21:24

answered Aug 07 '13 at 19:08

MMujtabaRoohani

483
4
19

How do I lose focus on a JComboBox?

2 Answers2