The readAndDispatch reads events from the operating system's event queue and then dispatches them appropriately.
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class SWTEventHandlingDisplay {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Hello, world!");
shell.open();
while(! shell.isDisposed()) { // Event loop.
if(! display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}