How to get value from a textfield which is inside a table

Hi, I have a table with 9 columns and one row. Table row is made of 9 individual textfield for each column and user has an option to add another row which means adding 9 individual textfiled. How to get the values from those textfields by row number?

here is my code…

Tabel tb = new Table();
Textfiled tf = new Textfiled();
String colName = new String {A, B, C, D, E, F, G, H, I };

for(String s : colName)
tb.addContainerProperty(s, String.class, “”);