Really?  When I run this code on Windows, the
taskbar appears over the top of the bottom part
of the JFrame.

<sscce>
import java.awt.*;
import javax.swing.*;

class FullScreenFrame {
 public static void main(String[] args) {
   JFrame f = new JFrame("Big");
   f.setDefaultCloseOperation(
     JFrame.EXIT_ON_CLOSE);
   f.setExtendedState(Frame.MAXIMIZED_BOTH);
   f.setVisible(true);
 }
}
</sscce>

"Goofball" <yuriytkach@gmail.com> wrote in news:1176306362.928077.52620
@e65g2000hsc.googlegroups.com:

Try this :
import java.awt.*;
import javax.swing.*;

public class TestMaxJFrame extends JFrame {
 public TestMaxJFrame() {
  GraphicsEnvironment env =
    GraphicsEnvironment.getLocalGraphicsEnvironment();
  /*
    The next line determines if the taskbar (win) is covered.
  */
  this.setMaximizedBounds
             (env.getMaximumWindowBounds()); // taskbar not covered
  this.setExtendedState(this.getExtendedState() | this.MAXIMIZED_BOTH);
 }

 public static void main(String[] args) {
  JFrame.setDefaultLookAndFeelDecorated(true);
  TestMaxJFrame t = new TestMaxJFrame();
  t.setVisible(true);
 }
}

Bye.