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List the displays boundaries, client area

Device represents a physical device. It's an abstract class, and has two concrete subclasses: Display and Printer. import org.eclipse.swt.graphics.Device; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class DeviceDisplayBoundary {   public static void main(String[] args) {     final Display display = new Display();     final Shell shell = new Shell(display);     Device device = shell.getDisplay();          System.out.println("getBounds(): "+ device.getBounds());     System.out.println("getClientArea(): " +device.getClientArea());     while (!shell.isDisposed()) {       if (!display.readAndDispatch()) {         display.sleep();       }     }     display.dispose();   } }