JButton disappear after minimizing the window

Hello,
I am working on a project where user can create JButton dynamically using drag-and-drop. Now the issue is that when I minimize the window and then maximize it, the dynamically created JButton disappear whereas the static ones remain as it is. Is there a way by which I can solve the issue of the dynamically created buttons.
Thanks.

Is there a way by which I can solve the issue of the dynamically created buttons.[_Probably_|http://catb.org/~esr/faqs/smart-questions.html].
db

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