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Each component (be it a JLabel, JCheckbox, etc..) must have its font individually set....by default calling setFont on the container (applet) won't change the fonts of any added components - you must...

Call setFont with the appropriate font on all the components you wish to have a custom font.

public void entree ()

I presume you want this to be a constructor and not a method, and given it has a return value it is treated as a method (and thus never called). Remove the void and see what...

I'd suggest breaking the problem down (posting many questions with chunks of code such as this can end up getting a bit confusing on both ends). Deal with one question at a time. If the font isn't...