JTable cell not editing

Question

I'm using a JTable and I only want columns 0 and 3 to be editable. Column 0 works fine, but when I go to edit column 3, it returns true that it is editable, but does not allow me to enter new text or fire setValueAt(...).

I do have some click events, which I remarked out and using a custom renderer, which I disabled, but nothing seems to help. What else should I look at for a problem? It's not throwing any errors.

Do I need to set a cell editor? I've tried some examples I've found but none seem to work properly. Column 0 is a boolean (checkbox, which works fine) and the rest are strings.

public boolean isCellEditable(int row, int col) {
        //Note that the data/cell address is constant,
        //no matter where the cell appears onscreen.
        if (col == 0) {
            return true;
        }else if(col == 3) {
            return true;
        } else {
            return false;
        }
    }
    
   
    /*
     * Don't need to implement this method unless your table's
     * data can change.
     */
    public void setValueAt(Object value, int row, int col) {
        if (DEBUG) {
            System.out.println("Setting value at " + row + "," + col
                               + " to " + value
                               + " (an instance of "
                               + value.getClass() + ")");
        }

        data[row][col] = value;            
        fireTableCellUpdated(row, col);
        int ch;
        int dab;
        try {
            if (col == 0) {
                ch = Integer.valueOf(String.valueOf(data[row][1]));
                dab = Integer.valueOf(String.valueOf(data[row][2]))-1;
                plot.dab[ch].get(dab).visible = (boolean) value;
            }
            if (col == 3) {
                ch = Integer.valueOf(String.valueOf(data[row][1]));
                dab = Integer.valueOf(String.valueOf(data[row][2]))-1;
                plot.dab[ch].get(dab).desc = String.valueOf(value);
                
            }
            plot.repaintCall();
        } catch (NumberFormatException e) {e.printStackTrace();}
      //  System.out.println(ch + "   " + dab);
        if (DEBUG) {
            System.out.println("New value of data:");
            printDebugData();
        }
    }