java - Visibility issue of JInternalFrame -

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i having 1 application form.

i designed using java swing.

i used many swing components menubar,jpanel,jdesktoppane,jinternalframe , many more.

on click event of 1 jbutton launched jinternalframe inside jdesktoppane.

but whenever click on jinternalframe frame becomes invisible or part of frame available.

here share snap hope helpful.

can tell me why happens?and how solve bug? enter image description here

here jinternalframe visible. enter image description here

here when clicked on calendar component parts become invisible , parts of frame visible.

some times whole frame goes invisible.

how can solve issue?

edit:-

after solving visibility problem how make jdesktoppane transparent? enter image description here


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