How to change background color in Java panel?

Question

Right now, the background that I am getting is gray. I want to change it to black. I tried to do something like setBackground (color.BLACK); but it didn’t work. Any suggestions?

public test() { setTitle("Adjustment Form"); setSize(670,450); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setLayout(new GridLayout(4,6,2,2)); setVisible(true); } 

Answer 1

You may call:

 getContentPane().setBackground(Color.black);
getContentPane().setBackground(Color.black); 

Or add a JPanel to the JFrame you are using. Then add your components to JPanel. This will allow you to call

 setBackground(Color.black);
setBackground(Color.black); 

on JPanel to set the background color.

Answer 2

I think he is trying to say it using getContentPane().setBackground(Color.the_Color_you_want_here)

but if you want to set the color for any other, then JFrame, you use object.setBackground(Color.the_Color_you_want_here)

For example:

 jPanel.setbackground(Color.BLUE) 

Answer 3

setBackground() is the correct method. Did you repaint it after you changed it? If you change it before making the panel (or its containing frame) visible, it should work

Answer 4

I assume we are dealing with a JFrame? Visible part in the content area - you need to use jframe.getContentPane (). SetBackground (...);