need opinion on how to implent data validation on jTable

Hi,

I have developed an application that does a great deal of data entry and manipulation through JTables.

However, I have been asked to perform some validation on the data contained in the cells.

Before doing so, I need to know if it is better for me to implement the validation on the fly (e.g. while JTable setValueAt or TableModel.getValueAt()) or by using a simple button on the GUI that performs the validation manually and informs the user accordingly.

I am afraid that "on-the-fly" validation may cause a great overhead while manual validation may let the user add data while not knowing that something is wrong...

any advice would be greatly appreciated!

[702 byte] By [xpantaa] at [2007-11-27 8:24:37]