How to set a background color of a JButton in Java?

Question

I am developing a Java Desktop Application. In it I have 4 JButtons on a JPanel. Now I want that whenever a button is clicked its background color

Answer 1

Here's a cross-section of "Button.background" based on this example:

*** Metal javax.swing.plaf.metal.MetalLookAndFeel 636 entries
Button.background: javax.swing.plaf.ColorUIResource[r=238,g=238,b=238]

*** Nimbus com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel 1052 entries
Button.background: com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel$NimbusProperty@60961dff

*** CDE/Motif com.sun.java.swing.plaf.motif.MotifLookAndFeel 550 entries
Button.background: javax.swing.plaf.ColorUIResource[r=174,g=178,b=195]

*** Mac OS X com.apple.laf.AquaLookAndFeel 705 entries
Button.background: com.apple.laf.AquaNativeResources$CColorPaintUIResource[r=238,g=238,b=238]