import java.awt.*;

class ScreenRes {
public static void main(String args[]) {
new ScreenRes().doit();
}

public void doit() {
Frame frame = new Frame();
GraphicsDevice device;
device =
GraphicsEnvironment.
getLocalGraphicsEnvironment().
getDefaultScreenDevice();
if ( device.isFullScreenSupported() ) {
device.setFullScreenWindow(frame);
if (device.isDisplayChangeSupported()) {
device.setDisplayMode(
new DisplayMode( 0,0,
8, // bitDepth - 8 bits 256 colors
DisplayMode.REFRESH_RATE_UNKNOWN ));

}
else {
System.err.println("Change display mode not supported");
}
}
else {
System.err.println("Full screen not supported");
}
}
}