How to set Focus on a Cell in a Table

I have a column for which i set the table editor in the following way :
DateTextField contractStarts = new DateTextField();
itemTable.getColumnModel().getColumn(9).setCellEditor(new DefaultCellEditor(contractStarts);
When the focus is brought to a cell in 9th column thru tab key I want the cursor displayed and invariably invoking the cell editor without clicking the cell.
If i don't click on the cell the cell editor (contractStarts) implementation does not seem to work or otherwise does very well. Since normally a user would manoeuvre using tab key.
Can this be done. I am searching for possible clues to this.
Regards
Shomal

OK well I tried your example again and it does work in my Chrome and Firefox browser. IE10 still won't let me type into the fields.
I borrowed some of your code and changed your input to fit with mine.
    if (typeof oItem.getCells()[1].$().find('input').selectionStart === "number") {
oItem.getCells()[1].$().find('input').selectionStart =
     oItem.getCells()[1].$().find('input').selectionEnd =
  oItem.getCells()[1].$().find('input').value.length;
    } else if (typeof oItem.getCells()[1].$().find('input').createTextRange !== "undefined") {
oItem.getCells()[1].$().find('input').focus();
var range = oItem.getCells()[1].$().find('input').createTextRange();
range.collapse(false);
range.select();
In debugger when I evaluate:
oItem.getCells()[1].$().find('input').selectionStart
it is undefined.

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