Question

I want the button on click it never change the background color, by default the color will change to light blue grey color.

So this is my code

JButton b = new JButton();
b.setBackground(SystemColor.control);

I want the button when on click it will never change the background color.

Answer 1

The painting of the button depends on LAF. You can do one of the following:

1. Define your own UI delegate and assign it to the button.
   Disadvantages: complex, breaks LAF.
2. Extend JButton and implement paintComponent().
   Disadvantages: You will need to paint button’s label yourself.
3. Remove the button’s background painting altogether by invoking setContentAreaFilled(false) and then add the button in the opaque panel with the needed background color.
   Advantages: button is unchanged, LAF isn’t broken.
   Disadvantages: you need to create a panel for each button, and adjust it to fit the button exactly, which can be quite difficult, depending on the layout.