public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new RowLayout()); DateTime calendar = new DateTime(shell, SWT.CALENDAR); calendar.addSelectionListener( new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { System.out.println("calendar date changed"); } }); DateTime time = new DateTime(shell, SWT.TIME); time.addSelectionListener( new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { System.out.println("time changed"); } }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }