Key Event Not Firing For JTable

I am adding comboBoxes and Button for j
AddComboBoxForJTable(
Integer.parseInt(AddedCols_Name_Pos.elementAt(r).g et(0)) - 1,
Id_Val_Identifier_TableName_ForCombo.get(r), selectedRow, currentFormObj, currentJScrollPane);
// Adding Combo Column

jtbl_General.getColumn(AddedCols_Name_Pos.elementA t(r).get(1)).setCellRenderer(new ButtonRenderer_Utility(
Id_Val_Identifier_TableName_ForCombo.elementAt(r). get(4), dbName));
// Adding Button Renderer
jtbl_General.getColumn(AddedCols_Name_Pos.elementA t(r).get(1)).setCellEditor(
new ButtonEditor_Utility(new JCheckBox(), this, Id_Val_Identifier_TableName_ForCombo.get(r), selectedRow, currentFormObj, currentJScrollPane, dbName));
// Adding Button Column
Please tell how my the keyEvent for jtable respond to the inputs

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