Why in Idea the form is a chunk???

Question

Java

I created a form, I launch it, and sometimes instead of a full-fledged window, a piece ... If I restart it several times, then a full-fledged window finally starts ... Idea development environment, java language. Has anyone come across something similar??

Answer 1

do you setVisible(true) for the frame before adding elements or after?
If TO, then the situation is possible when the window was displayed before the elements were added and the sizes were calculated incorrectly (minimal, since there was nothing in the frame at the time of calculating the sizes).
It's also better to specify the preferred (minimum) window sizes explicitly.
And it is better not to use Swing.

Answer 2

what a piece... am I watching?!
//nothing is clear - daub