setBackground not working in Swing or AWT

Jitendra — Fri, 27 Aug 2010 04:23:49 +0000

I tried to change the background color of the JLabel control.

I tried lots of time, gone through JAVA documentation but it doesn’t helped much. After digging i found that few controls in JAVA have transparent background color and therefore controls having transparent background does not work for the setBackground() property.

To set the background color of such controls, we need to explicitly set the Opaque to true.

JLabel lblMousePointer.setBackground(Color.white);

lblMousePointer.setOpaque(true);

setBounds method not working

Jitendra — Fri, 27 Aug 2010 04:01:16 +0000

While working on Swings and AWT, i used the setBounds(int x,int y,int width,int height) method of control as per API documentation.
However soon i realized that this method is not working as per expected.
After few try i found that setBounds() method only works if the Layout of container of control is null.

The layout of the container can be set null like below code:

frame.getContentPane().setLayout(null);

AWT – Jitendra Zaa

setBackground not working in Swing or AWT

setBounds method not working