Eclipse SWT Slider and Spinner

SWT Widgets

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Slider;
import org.eclipse.swt.widgets.Spinner;

public class Main extends Composite {

  private Spinner spinner = null;
  private Slider slider = null;

  public static void main(String[] args) {
 
    Display display = Display.getDefault();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    shell.setSize(new Point(300, 200));
    new Main(shell, SWT.NONE);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }

  public Main(Composite parent, int style) {
    super(parent, style);
    initialize();
  }

  private void initialize() {
    this.setBounds(new Rectangle(0, 0, 300, 100));
    FillLayout fillLayout = new FillLayout();
    fillLayout.type = org.eclipse.swt.SWT.VERTICAL;
    spinner = new Spinner(this, SWT.NONE);
    spinner.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {      
      slider.setSelection(spinner.getSelection());
     }
    });
    slider = new Slider(this, SWT.NONE);    
    slider.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
      spinner.setSelection(slider.getSelection());
     }
    });
    this.setLayout(fillLayout);
  }

}