Problem with comboBox editor

Question

Hi experts,
i am keeping a combobox renderer and editor in my JTable for 2 columns say 5th column and 7th column.
In renderer no Problem.
But while i am editing ,whenever i am choosing a perticular item from the drop down in the first row of table,it is affecting the remaining set of rows.,not all the rows also.
for example,next 5 rows are getting the same selected value.
next some 2 rows are getting affected.
the below 2 class are my renderer and editor.public class ComboBoxRenderer extends JComboBox implements TableCellRenderer {
        public ComboBoxRenderer(String[] items) {
                        super(items);
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
                if (isSelected) {
                // Select the current value
                setSelectedItem(value);
                return this;
}My ComboBox editor is public class ComboBoxEditor extends DefaultCellEditor {
        public ComboBoxEditor(String[] items) {
               super(new JComboBox(items));
}so i am using this render and editor in my swing screen by the following codeString strSP[] = {"P", "O", "H", " "};
column5.setCellEditor(new ComboBoxEditor(strSP));
column5.setCellRenderer(new ComboBoxRenderer(strSP));I am sure like the problem with my renderer and editoronly,but i am helpless.
Please if someone help me to come out of this problem,it will be much helpful for me .
thanks

Answer 1

Hi,
Thanks for u'r reply
I tried in so many ways.
I tried with u'r editor,and sun forum examples also.
I brief what i want.
I am having table with 3 column.
The zeroth col, and the 2 col is a combo box.so i am rendering.
when i choose a one from zeroth col combo Box ,the 2nd col ComboBox value has to change into YES
when i choose a apart from one from zeroth col combo Box ,the 2nd col combo Box value has to change into NO.
Here my Problem is
When ever i am choosing the particular value from the 1st combo box,it is affecting the all the combobox values below(set of values,not all)..To solve that i kept the commented line in the renderer but it is creating the new problem.
I am very seriously working to solve this problem,if any one suggest to solve this,it will be very much helpful to me.
I am posting my code belowimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.*;
public class TableComboBox extends JFrame implements TableModelListener
     public JTable table;
        DefaultTableModel model = null;
        JComboBox editor2 = null;
     public TableComboBox()
          Object[][] data = { {" ", "A" , " "}, {" ", "B", " "}, {" ", "C", " "}, {" ", "D", " "}, {" ", "E", " "}, {" ", "F", " "}, {" ", "G", " "}, {" ", "H", " "}  };
                String[] columnNames = {"FIRST","SECOND", "THIRD" };
                String[] column0Items = { "one", "two", "three", "four" };
                String column2Items[] = {"YES","NO"};
          model = new DefaultTableModel(data, columnNames);
                model.addTableModelListener(this);
          table = new JTable(model);
          //  Set the Zeroth column to use a combobox as its editor,renderer
                table.getColumnModel().getColumn(0).setCellRenderer(new ComboBoxRenderer(column0Items));
          table.getColumnModel().getColumn(0).setCellEditor(new ComboBoxEditor(column0Items));
                //  Set the second column to use a combobox as its editor,renderer
                table.getColumnModel().getColumn(2).setCellRenderer(new ComboBoxRenderer(column2Items));
          table.getColumnModel().getColumn(2).setCellEditor(new ComboBoxEditor(column2Items));
                JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
         public void tableChanged(TableModelEvent e) {
                int row = e.getFirstRow();
                int column = e.getColumn();
                if(e.getType() == TableModelEvent.INSERT) {
                if (e.getType() == TableModelEvent.UPDATE) {
                        if(table.getEditingRow() != table.getSelectedRow())
                                ((DefaultCellEditor)table.getCellEditor()).cancelCellEditing();                      
               if ( column == 0 ) {
                                if(model.getValueAt(row, 0).equals("one")) {
                                        model.setValueAt("YES", row, 2);
                                } else if(model.getValueAt(row, 0).equals("two")){
                                        model.setValueAt("NO", row, 2);
                                } else if(model.getValueAt(row, 0) == "three"){
                                        model.setValueAt("NO", row, 2);
                                } else if(model.getValueAt(row, 0) == "four"){
                                        model.setValueAt("NO", row, 2);
                       }else{
                                //do nothing
     public static void main(String[] args)
          final TableComboBox frame = new TableComboBox();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
        class ComboBoxRenderer extends JComboBox implements TableCellRenderer {
                String items[];
                public ComboBoxRenderer(String[] items) {
                                super(items);
                                this.items = items;
                public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
                               if(isSelected){
                                        setSelectedItem(value.toString());
                                        return this;
                                }/*else{
                                        setSelectedItem(items[0]));
                        return this;
        class ComboBoxEditor extends DefaultCellEditor {
                public ComboBoxEditor(String[] items) {
                       super(new JComboBox(items));
        }