Ok, here it is with the "CellEditor" again

[Ben Zung]

Sorry I have to repost this as a new topic. And I have put up a working example here. please copy and paste and then let me know where you find the
table cellEditor gets lost.
Thanks a lot.
Please click on "check table cell editor" after the frame shows up.

 import java.awt.*;
import java.io.*;
import java.util.*;
import java.text.*;
import javax.swing.*;
import javax.swing.event.*; 
import javax.swing.border.*; 
import java.awt.event.*;
import javax.swing.table.*;

public class Question extends JFrame{
MyTable myTable;
public static void main(String[] s){
new Question();
}
public Question(){
super();
setSize(500,500);
setLocation(100,100);
myTable = new MyTable();
JOptionPane.showMessageDialog(this, "Initializing. Here is"
+ " the table's cell editor: " 
+ (DefaultCellEditor)myTable.getCellEditor());
getContentPane().add("Center",new JScrollPane(myTable));

JButton check = new JButton("check table cell editor");
getContentPane().add("South",new JPanel().add(check));
setVisible(true);
check.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
myTable.stopEditingTableCell();
}
});
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent event){
System.exit(0);
}
}); 
}

class MyTable extends JTable{

/**column identifier
*/
private Vector columns;

/**create a new MyTable ojbect
*/
public MyTable(){
super();
columns = new Vector();
for (int i = 0; i < 5; i ++)
columns.addElement("Column " + i);
DefaultTableModel model = new DefaultTableModel(columns,0);
setModel(model);
setDefaultRenderer(model.getColumnClass(0),
new MyCellRenderer()); 
setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
setRowHeight(getRowHeight()+5);
setRowMargin(getRowMargin()+5);
setSelectionBackground(java.awt.Color.yellow);
JTableHeader header = getTableHeader();
header.setDefaultRenderer(new MyHeaderRenderer());
JTextField editor = new JTextField(10);
DefaultCellEditor cellEditor = new DefaultCellEditor(editor);
setCellEditor(cellEditor);
}
public void stopEditingTableCell(){
DefaultCellEditor cellEditor = (DefaultCellEditor)getCellEditor();
if (cellEditor != null){
cellEditor.stopCellEditing();
JOptionPane.showMessageDialog(Question.this,"Yes, Sir. editing stopped");
}
else
JOptionPane.showMessageDialog(Question.this,"Boooom, no cell editor");
}
}
/**MyCellRenerer class
*/
   class MyCellRenderer extends DefaultTableCellRenderer{
public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int col) {
//System.out.println("table: " + table.getSelectionBackground());
setText((String)value);
if (isSelected){
setBackground(table.getSelectionBackground());
}
else
setBackground(java.awt.Color.white);
if (col < 3)
super.setHorizontalAlignment(SwingConstants.LEFT);
else
super.setHorizontalAlignment(SwingConstants.RIGHT);
return this;
}
    }
class MyHeaderRenderer extends DefaultTableCellRenderer{
public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int col) {
//System.out.println("table: " + table.getSelectionBackground());
setText((String)value);
Font font1 = table.getTableHeader().getFont();
Font font2 = new Font(font1.getName(),Font.BOLD,font1.getSize()+1);
setFont(font2);
super.setHorizontalAlignment(SwingConstants.CENTER);
return this;
}
    }
}
 

puzzled, lost Bing

[Ben Zung]

(Big sigh)
Ok, just in case anyone else would wondering the same thing, here is the
answer to my posted question:
The getCellEditor in JTable returns the cellEditor only when there is data
in the table and the cellEditor is being edited -- ie, getting the focus by
double click on the cell.


bing