How to make a JFrame really fullscreen?

Question

In my Java application I try to make a JFrame really fullscreen by using this code:

public class MainFrame extends JFrame {

    private static final long se         


        

Answer 1

private Dimension screenSize; /* class level vars */
private swidth , sheight;

/*In GUI creating method:put this code: */
screenSize = Toolkit.getDefaultToolkit().getScreenSize();
sheight = screenSize.height;
swidth = screenSize.width;
setBounds(0, 0, swidth, sheight-40);

NB: using swidth, sheight vars give you the liberty to further adjust.
Best way is to use int vars in place of - 40 e.g sheight/swidth - margin etc.
Here margin should come from parameter table. Getting full control of situation.
Direct usage also possible as: setBounds(0,0,screenSize.width, screenSize.height);