Java / Swing -> Creating a notification JFrame, and the error “The frame is displayable”

Question

Ok, I am not that versed in Java / Swing, and I am running into a problem. My application is throwing this error: \"Exception in thread \"AWT-EventQueue-0\" java.awt.Illegal

Answer 1

The error you are getting is calling setUndecorated(true) after the frame is made displayable by calling pack(). Call setUndecorated before pack and it should work.