Fokus auf eine Combobox in einem JTable setzen

[lazydog]

Hallo,

ich finde ums verrecken keine Möglichkeit, den Fokus auf eine Combobox innerhalb eines JTables zu setzen. Hat jemand einen Tipp? Beispielcode anbei:

import java.awt.Component;
import java.awt.FlowLayout;
import java.util.EventObject;
import java.util.Hashtable;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.CellEditorListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class testframe extends JFrame{

	private JComboBox combo; 	
	private JTable table;
	
	public testframe() {
		super("Testframe");
		this.setSize(600,400);
		this.setLayout(new FlowLayout());
	}
		
	/**
	* Create the GUI and show it
	*/
	private static void createAndShowGUI() {
		
		//Create and set up the window.
		testframe frame = new testframe();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		//setup the table
		frame.buildTable();
		
		//Display the window.
		frame.setVisible(true);
		
		// Hier nun soll der Fokus auf die Combobox!
		// ...

	}
	
	/**
	 * setup the combo
	 */
	public JComboBox getCombo(){
		JComboBox combo = new JComboBox();
		
		combo.addItem("lazy");
		combo.addItem("dog");
		combo.addItem("lazydog");
		
		return combo;
	}
	
	/**
	 * setup the table
	 */
	public void buildTable(){
		
		combo = getCombo();	
		myTableModel tableModel = new myTableModel();
		tableModel.setValueAt("firstVal", 0, 0);
		tableModel.setValueAt("secondVal", 0, 1);
		tableModel.setValueAt(combo, 0, 2);
		
		table = new JTable(tableModel, null);
		
		TableColumn tc = table.getColumn(table.getColumnName(2));
		tc.setCellRenderer(new comboRenderer());
		tc.setCellEditor(new comboEditor());
		
		this.getContentPane().add(new JScrollPane(table));
		
	}
	
	/**
	 * renderer for the comboCells 
	 */
	class comboRenderer implements TableCellRenderer{

		public Component getTableCellRendererComponent(JTable table, Object value, 
				boolean isSelected, boolean hasFocus, int row, int column) {
			
		    return (Component)value;
			
		}
		
	}
	
	/**
	 * editor for the comboCells 
	 */
	class comboEditor implements TableCellEditor{
		public CellEditorListener cl;
		
		public Component getTableCellEditorComponent(JTable table, Object value,
				   boolean isSelected, int row, int column) {
			return (Component)value;
		}		

		public Object getCellEditorValue() {
			return null;
		}

		public boolean isCellEditable(EventObject arg0) {
			return true;
		}

		public boolean shouldSelectCell(EventObject arg0) {
			return false;
		}

		public boolean stopCellEditing() {
			return true;
		}

		public void cancelCellEditing() {
			;
		}

		public void addCellEditorListener(CellEditorListener arg0) {
			;
		}

		public void removeCellEditorListener(CellEditorListener arg0) {
			;
		}
		
	}
	
	/**
	 * model to control the table
	 */
	class myTableModel extends AbstractTableModel{

		private Hashtable data = new Hashtable();
		private int rowCount = 0, colCount = 0;
		
		public int getRowCount() {
			return rowCount;
		}

		public int getColumnCount() {
			return colCount;
		}

		public void setValueAt(Object o, int row, int col) {
			String key = "["+row+","+col+"]";
			
			if (row+1 > rowCount) rowCount = row+1;
			if (col+1 > colCount) colCount = col+1; 
			
			data.put(key, o);
		}
		
		public Object getValueAt(int row, int col) {
			String key = "["+row+","+col+"]";
			return this.data.get(key);
		}
		
		public boolean isCellEditable(int arg0, int arg1){
			return true;
		}
		
	}
    
	public static void main(String[] args) {
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				createAndShowGUI();
			}
		});
	}
}

vielen Dank im voraus
lazydog