Updating database table from JTable

Hey and Good for all of u guys,

Here are some questions which I am in of help !!
I am developing a database application using Oracle 9i as back end and neatbeans 5.5 as an IDE.
1)

It is a database question from the java environment
I want to display(by retreiveing from Database table) rows in a jtable and then edit them there in the jtabl after that I want to click the update button and see the effect of the work in the table.
How could I do this (How to insert values from JTable to Database)?

2) How Can I programme a Jtable to hold and fit with dynamically generated values from a database?

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Originally Posted by yesjava

Hey and Good for all of u guys,

2) How Can I programme a Jtable to hold and fit with dynamically generated values from a database?

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How extraordinary!! exactly what I'm trying to do....
In fact I searched for "Java forums" in google to discuss what my code is presently doing is the right way because Swing(update JTable with each query) isn't thread safe.