Buttons highlighted already in my Java GUI

Buttons highlighted already in my Java GUI

References

Reference NO 1

http://stackoverflow.com/questions/13656416/buttons-highlighted-already-in-my-java-gui

Reference NO 2

http://stackoverflow.com/questions/16755831/java-swing-gui-changing-colour-on-mouse-over

Reference NO 3

http://stackoverflow.com/questions/4172940/how-to-set-background-color-of-a-button-in-java-gui

Reference NO 4

http://stackoverflow.com/questions/15498233/java-gui-up-and-down-buttons

Reference NO 5

http://stackoverflow.com/questions/8156253/how-action-a-button-to-open-a-new-pane-in-java-for-a-gui

Reference NO 6

#EANF#

Reference NO 7

#EANF#

Reference NO 8

#EANF#