java How to center align all elements inside a jframe to center in java?

[Shammikit]

Im making a ATM enter PIN screen using java.i have written the code to make it appear full screen when i run it but all the other elements such as the jtextfield,labels and buttons are still at the top left corner of the screen.How can i get them all to the center of my screen? . 

[vorticalbox]

maybe a dynamic layout? Set its location based on height and width of the frame.

[Shammikit]

2 hours ago, vorticalbox said:

maybe a dynamic layout? Set its location based on height and width of the frame.

this is the code that i have used to make it go fullscreen;

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        setBounds(0,0,screenSize.width,screenSize.height);
        setVisible(true);

i think it adjust height and width according to the screen size of the device.if i assign height and width according to my device and try to view it at a another device with a larger screen it will not align properly like in mine right