SWT Jface Eclipse Java

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 29, 2004 10:12:41 AM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
public class GridLayoutSample {
  Display display = new Display();
  Shell shell = new Shell(display);
  public GridLayoutSample() {
    
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 2;
    gridLayout.makeColumnsEqualWidth = true;
    
    shell.setLayout(gridLayout);
    Button button1 = new Button(shell, SWT.PUSH);
    button1.setText("button1");
    button1.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
    
    List list = new List(shell, SWT.BORDER);
    list.add("item 1");
    list.add("item 2");
    list.add("item 3");
    list.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_CENTER));
    
    Button button2 = new Button(shell, SWT.PUSH);
    button2.setText("button #2");  
    GridData gridData = new GridData(GridData.VERTICAL_ALIGN_END);
    gridData.horizontalIndent = 5;
    button2.setLayoutData(gridData);
    
    Button button3 = new Button(shell, SWT.PUSH);
    button3.setText("3");
    button3.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL));
    
    
    shell.pack();
    shell.open();
    //textUser.forceFocus();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }
    display.dispose();
  }
  private void init() {
  }
  public static void main(String[] args) {
    new GridLayoutSample();
  }
}