import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class Test {

  public static void main(String[] args) {
    Display display = Display.getDefault();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Text t = new Text(shell, SWT.BORDER | SWT.CENTER);

    new Thread(new Runnable() {
      public void run() {
        int i = 0;
        while (true) {
          i++;
          t.setText(String.valueOf(i));
          try {
            Thread.sleep(1000);
          } catch (InterruptedException e) {
            e.printStackTrace();
          }
        }
      }
    }).start();

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
  }
}