Review the code below.Events from the operating system's event queue are read by readAndDispatch and then dispatches them appropriately.

Java Code:
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!");;

    while(! shell.isDisposed()) { // Event loop.
        if(! display.readAndDispatch())