JComboBox content disappear once I select one

Question

I have a JCombobox whose content is populated this way:

List<MyClass> l = getList();
for(MyClass ll : l)
  combo.addItem(ll.toString());
combo.setSelectedIndex(0);

Everything's ok till I click on combo in order to show item list: when I click selected item disappears (but list appears) when I select an item on list whole combobox disappears!! Why?

Show us more code. We cannot guess what is going on just from these 4 lines. — Dan D., Aug 22 '12 at 09:49

score 1 · Answer 1 · edited Aug 22 '12 at 11:12

1

For JComboBoxs (add, remove, manage) Items to use is the ComboBoxModel.
JComboBox and its Model is based on arrays Vector<> or Object[], since Java2.
All updates (JComboBox and its Model) must be done on Event Dispatch Thread.

edited Aug 22 '12 at 11:12

trashgod

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answered Aug 22 '12 at 09:56

mKorbel

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score 1 · Accepted Answer · edited May 23 '17 at 10:24

1

Problem was related to another problem I had and this answer Panel components disappear when I minimize frame

solved both!

edited May 23 '17 at 10:24

Community

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answered Aug 22 '12 at 10:50

user1610075

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JComboBox content disappear once I select one

2 Answers2