Java Tutorial/SWT/TabSequence

Focus Traversal: organize tab sequence in Control.setTabList(Control[] c)

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.rubo;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class FocusTraversal {
  public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    
    shell.setLayout(new RowLayout());
    
    Composite composite1 = new Composite(shell, SWT.BORDER);
    composite1.setLayout(new RowLayout());
    composite1.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
    
    Button button1 = new Button(composite1, SWT.PUSH);
    button1.setText("Button1");
    
    Button button3 = new Button(composite1, SWT.PUSH);
    button3.setText("Button3");
    
    Button radioButton1 = new Button(composite1, SWT.RADIO);
    radioButton1.setText("radio-1");
    Button radioButton2 = new Button(composite1, SWT.RADIO);
    radioButton2.setText("radio-2");
    
    Composite composite2 = new Composite(shell, SWT.BORDER);
    composite2.setLayout(new RowLayout());
    composite2.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
    
    Button button2 = new Button(composite2, SWT.PUSH);
    button2.setText("Button2");
    
    Combo combo = new Combo(composite2, SWT.DROP_DOWN);
    combo.add("combo");
    combo.select(0);
    
    composite1.setTabList(new Control[]{button1, button3});
    composite2.setTabList(new Control[]{button2, combo});
    
    shell.setTabList(new Control[]{composite2, composite1});
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
  }
}