My JFrame always becomes a few pixels too big.

Question

I am working on this game in Java, and I just rewrote all my window related code from being based on java.awt to javax.swing. Soon after, I realized that things were a bit m

Answer 1

This is an issue related to using setResizable(false); AFTER you've tried setting the size of the window.

The problem is that (on Windows at least), the size of the frames border is different between resizable and non-resizable windows.

Call setResizable before calling pack

If you want a better (and generally more reliable) way to center your window, consider using

setLocationRelativeTo(null);

instead of

setLocation(s.width/2-getWidth()/2, s.height/2-getHeight()/2);

Toolkit.getScreenSize doesn't take into consideration the space taken up by the task bar...