Problem in JTable,Kindly help very urgent

Question

I am trying to add /remove rows from JTable whose first column is JButton and others are JComboBox's.If no rows are selected,new row is added at the end.If user selects some row & then presses insert button,new row is added below it.Rows can only be deleted if user has made some selection.I am also using Icon for the button of currently active row.But i am getting exception(ArrayIndexBounds)when i try to add/delete.May be proper refreshing is not taking place.Kindly help me,where i am making mistake.If any function is to be used.My code is as follows....It is running code
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.util.*;
public class JButtonTableExample extends JFrame implements ActionListener,TableModelListener
JComboBox mComboLHSType = new JComboBox();
JComboBox mComboRHSType = new JComboBox();
JLabel mLabelLHSType = new JLabel("LHS Type");
JLabel mLabelRHSType = new JLabel("RHS Type");
JButton mButtonDelete = new JButton("Delete");
JButton mButtonInsert = new JButton("Insert");
JButton check = new JButton("check");
JPanel mPanelButton = new JPanel();
JPanel mPanelScroll = new JPanel();
JPanel mPanelCombo = new JPanel();
DefaultTableModel dm ;
TableColumnModel modelCol;
JTable table;
JScrollPane scroll;
int currentRow = -1;
static int mSelectedRow = -1;
EachRowEditor rowEditor;
public JButtonTableExample()
super( "JButtonTable Example" );
makeForm();
setSize( 410, 222 );
setVisible(true);
private void makeForm()
     this.getContentPane().setLayout(null);
     mLabelLHSType.setBounds(new Rectangle(26,5,71,22));
     mComboLHSType.setBounds(new Rectangle(83,5,100,22));
     mLabelRHSType.setBounds(new Rectangle(232,5,71,22));
     mComboRHSType.setBounds(new Rectangle(292,5,100,22));
     mPanelCombo.setLayout(null);
     mPanelCombo.setBorder(new LineBorder(Color.red));
     mPanelCombo.setBounds(new Rectangle(1,1,400,30));
     mComboRHSType.addItem("Constant");
mComboRHSType.addItem("Variable");
mComboRHSType.setSelectedIndex(0);
mComboRHSType.addActionListener(this);
mPanelCombo.add(mLabelLHSType,null);
mPanelCombo.add(mComboLHSType,null);
mPanelCombo.add(mLabelRHSType,null);
mPanelCombo.add(mComboRHSType,null);
     mPanelButton.setLayout(null);
     mPanelButton.setBorder(new LineBorder(Color.green));
     mPanelButton.setBounds(new Rectangle(1,165,400,30));
     mButtonInsert.setBounds(new Rectangle(120,5,71,22));
     mButtonDelete.setBounds(new Rectangle(202,5,71,22));
     mButtonDelete.addActionListener(this);
mButtonInsert.addActionListener(this);
check.setBounds(new Rectangle(3,3,71,22));
check.addActionListener(this);
mPanelButton.add(mButtonDelete,null);
mPanelButton.add(mButtonInsert,null);
mPanelButton.add(check,null);
     dm = new DefaultTableModel()
          public boolean isCellEditable(int row, int col)
          if(row == 0 && col ==1)
               return false;
          return true;
     dm.addTableModelListener(this);
     //dm.setDataVector(null,
                         //new Object[]{"Button","Join","LHS","Operator","RHS"});
     dm.setDataVector(new Object[][]{{"","","","",""}},
                         new Object[]{"","Join","LHS","Operator","RHS"});
     table = new JTable(dm);
     table.getTableHeader().setReorderingAllowed(false);
     table.setRowHeight(25);
     table.setRowSelectionInterval(0,0);
     rowEditor = new EachRowEditor(table);
     int columnWidth[] = {20,45,95,95,95};
     mPanelScroll.setLayout(null);
     mPanelScroll.setBorder(new LineBorder(Color.blue));
     mPanelScroll.setBounds(new Rectangle(1,28,400,135));
     scroll = new JScrollPane(table);
scroll.setBounds(new Rectangle(1,1,400,133));
mPanelScroll.add(scroll,null);
     modelCol = table.getColumnModel();
     for (int i=0;i<5;i++)
     modelCol.getColumn(i).setPreferredWidth(columnWidth);
     setCellTypes();
this.getContentPane().add(mPanelCombo,null);
this.getContentPane().add(mPanelScroll,null);
this.getContentPane().add(mPanelButton,null);
}//end of makeForm()
private void setCellTypes()
     modelCol.getColumn(0).setCellRenderer(new ButtonCR());
     modelCol.getColumn(0).setCellEditor(new ButtonCE(new JCheckBox()));
     modelCol.getColumn(0).setResizable(false);
     setUpJoinColumn(modelCol.getColumn(1));
     setUpLHSColumn(modelCol.getColumn(2));
     setUpOperColumn(modelCol.getColumn(3));
     setUpRHSColumn(modelCol.getColumn(4));//By Default contains JTextField
public void actionPerformed(ActionEvent ae)
     if (ae.getSource() == mButtonInsert)
          int currentRow = table.getSelectedRow();
          if(currentRow == -1)
               int rowCount = dm.getRowCount();
               if(rowCount == 0)
                    table.clearSelection();
                    dm.insertRow(0,new Object[]{"","","","",""});
                    mComboRHSType.setEnabled(true);
                    mButtonDelete.setEnabled(true);
                    dm.fireTableDataChanged();
                    table.setRowSelectionInterval(0,0);
               else
                    table.clearSelection();
                    dm.insertRow(rowCount,new Object[]{"","","","",""});
                    dm.fireTableDataChanged();
                    table.setRowSelectionInterval(rowCount,rowCount);
          else
               table.clearSelection();
               dm.insertRow(currentRow+1,new Object[]{"","","","",""});
               dm.fireTableDataChanged();
               table.setRowSelectionInterval(currentRow+1,currentRow+1);
if(table.getRowCount()>0)
     table.setValueAt(new String(""),0,1);
     if(ae.getSource() == mButtonDelete)
int currentRow = table.getSelectedRow();
if(currentRow != -1)
table.clearSelection();
               dm.removeRow(currentRow);
               if(dm.getRowCount() == 0)
                    mComboRHSType.setEnabled(false);
                    mButtonDelete.setEnabled(false);
               dm.fireTableDataChanged();
          else
          JOptionPane.showMessageDialog(null, "Select row first", "alert", JOptionPane.ERROR_MESSAGE);
//always the first cell is empty and disabled
if(table.getRowCount()>0)
     table.setValueAt(new String(""),0,1);
     if(ae.getSource() == check)
          int r = table.getSelectedRow();
          for(int i=1;i<5;i++)
               Object obj = table.getValueAt(r,i);
               System.out.println("Value is"+obj.toString());
     if(ae.getSource()==mComboRHSType)
          System.out.println(mComboRHSType.getSelectedItem().toString());
          if(table.getSelectedRow() == -1)
                    JOptionPane.showMessageDialog(null, "Select row first", "alert", JOptionPane.ERROR_MESSAGE);
                    mComboRHSType.setSelectedIndex(0);
               else
                    if((mComboRHSType.getSelectedItem().toString()).equalsIgnoreCase("Constant"))
                         rowEditor.stopCellEditing();
                         table.setValueAt("",table.getSelectedRow(),4);
                         rowEditor.setEditorAt(table.getSelectedRow(), new DefaultCellEditor(new JTextField()));
                         table.getColumn("RHS").setCellEditor(rowEditor);
                    else if((mComboRHSType.getSelectedItem().toString()).equalsIgnoreCase("Variable"))
                    JComboBox comboBox = new JComboBox();
                    comboBox.addItem("Variable1");
                    comboBox.addItem("Constant1");
                    comboBox.addItem("Constant2");
                    rowEditor.stopCellEditing();
                    table.setValueAt("",table.getSelectedRow(),4);
                    rowEditor.setEditorAt(table.getSelectedRow(), new DefaultCellEditor(comboBox));
                    table.getColumn("RHS").setCellEditor(rowEditor);
}//end of actionPerformed()
public void tableChanged(TableModelEvent e)
          if(e.getType()==e.DELETE)
               System.out.println("DELETE CALEED called##################)");
          if(e.getType()==e.INSERT)
               System.out.println("INSERT CALEED called##################)");
public void setUpJoinColumn(TableColumn joinColumn)
JComboBox comboBox = new JComboBox();
comboBox.addItem("AND");
comboBox.addItem("OR");
comboBox.addItem("NOT");
joinColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
joinColumn.setCellRenderer(renderer);
//Set up tool tip for the header.
TableCellRenderer headerRenderer = joinColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer)
((DefaultTableCellRenderer)headerRenderer).setToolTipText("Click to see list of Join Conditions");
public void setUpLHSColumn(TableColumn LHSColumn)
JComboBox comboBox = new JComboBox();
comboBox.addItem("Participant1");
comboBox.addItem("Participant2");
comboBox.addItem("Variable1");
LHSColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
LHSColumn.setCellRenderer(renderer);
//Set up tool tip for the header.
TableCellRenderer headerRenderer = LHSColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer)
((DefaultTableCellRenderer)headerRenderer).setToolTipText("Click the sport to see Participants or Variables");
public void setUpOperColumn(TableColumn operColumn)
JComboBox comboBox = new JComboBox();
comboBox.addItem("=");
comboBox.addItem("!=");
comboBox.addItem("Contains");
operColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
operColumn.setCellRenderer(renderer);
//Set up tool tip for header.
TableCellRenderer headerRenderer = operColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer)
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click to see a list of operators");
public void setUpRHSColumn(TableColumn rhsColumn)
          rowEditor.setEditorAt(table.getSelectedRow(), new DefaultCellEditor(new JTextField()));
          rhsColumn.setCellEditor(rowEditor);
//Set up tool tips
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
rhsColumn.setCellRenderer(renderer);
public static void main(String[] args)
JButtonTableExample frame = new JButtonTableExample();
frame.addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
}//end of program
//Button as a renderer for the table cells
class ButtonCR implements TableCellRenderer
     JButton btnSelect;
     public ButtonCR()
          btnSelect = new JButton();
          btnSelect.setMargin(new Insets(0,0,0,0));
     public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column)
          if (column != 0) return null; //meany !!!
          return btnSelect;
}//end fo ButtonCR
//Default Editor for table
class ButtonCE extends DefaultCellEditor implements ActionListener
     JButton btnSelect;
     JTable table;
     static int selectedRow = -1;
     public ButtonCE(JCheckBox whoCares)
          super(whoCares);
          btnSelect = new JButton();
          btnSelect.setMargin(new Insets(0,0,0,0));
          btnSelect.addActionListener(this);
          setClickCountToStart(1);
     public Component getTableCellEditorComponent(JTable     table,Object value,boolean isSelected,int row,int column)
          if (column != 0) return null; //meany !!!
          this.selectedRow = row;
          this.table = table;
          System.out.println("Inside getTableCellEditorComponent");
          return btnSelect;
     //public Object getCellEditorValue()
          //return val;
     public void actionPerformed(ActionEvent e)
          // Your Code Here...
          System.out.println("Inside actionPerformed");
          System.out.println("Action performed Row selected "+selectedRow);
          btnSelect.setIcon(new ImageIcon("capsigma.gif"));
}//end of ButtonCE
class EachRowEditor implements TableCellEditor
     protected Hashtable editors;
protected TableCellEditor editor, defaultEditor;
JTable table;
* Constructs a EachRowEditor.
* create default editor
* @see TableCellEditor
* @see DefaultCellEditor
public EachRowEditor(JTable table)
          this.table = table;
     editors = new Hashtable();
     defaultEditor = new DefaultCellEditor(new JTextField());
     editor = defaultEditor;
     * @param row table row
     * @param editor table cell editor
     public void setEditorAt(int row, TableCellEditor editor)
     editors.put(new Integer(row),editor);
public Component getTableCellEditorComponent(JTable table,Object value, boolean isSelected, int row, int column)
     //editor = (TableCellEditor)editors.get(new Integer(row));
     //if (editor == null)
     //     editor = defaultEditor;
     return editor.getTableCellEditorComponent(table,value, isSelected, row, column);
     public Object getCellEditorValue()
     System.out.println("getCellEditoeValue");
     return editor.getCellEditorValue();
     public boolean stopCellEditing()
     System.out.println("stopCellEditing");
     return editor.stopCellEditing();
     public void cancelCellEditing()
     System.out.println("cancelCellEditing");
     editor.cancelCellEditing();
public boolean isCellEditable(EventObject anEvent)
System.out.println("isCellEditable");
selectEditor((MouseEvent)anEvent);
return editor.isCellEditable(anEvent);
public void addCellEditorListener(CellEditorListener l)
System.out.println("addCellEditorListener");
editor.addCellEditorListener(l);
public void removeCellEditorListener(CellEditorListener l)
     System.out.println("removeCellEditorListener");
editor.removeCellEditorListener(l);
public boolean shouldSelectCell(EventObject anEvent)
System.out.println("shouldSelect");
selectEditor((MouseEvent)anEvent);
return editor.shouldSelectCell(anEvent);
protected void selectEditor(MouseEvent e) {
int row;
if (e == null) {
row = table.getSelectionModel().getAnchorSelectionIndex();
} else {
row = table.rowAtPoint(e.getPoint());
editor = (TableCellEditor)editors.get(new Integer(row));
if (editor == null) {
editor = defaultEditor;
}//end of EachRowEditor

Answer 1

Hello!
Catch the exception in your event handler:
try {
} catch(Exception ex) { ex.printStackTrace(); }
You can now isolate the wrong line ^;
Next time if you post such a large code please use code and /code
enclosed in brackets : []; (See http://forum.java.sun.com/faq.jsp#format)
class A extends B {
      public void niceCode() {