Hi guys can you help me on java.

I want to add some data on a jcombobox from mysql database.

I created 2 comboboxes.

After I retrieve the necessary data from the database it will automatically fill up the first combobox.

And then in the first combobox the user chooses the data he wants to, and that particular data selected by the user will automatically fill up the second jcombobox.

E.g (1st combobox) I select grade level 1 and on the (2nd combobox) the advisers on that particular grade will show. It will not show the advisers from other grade levels..

How can I do that.
I am very noob. T_T
Please help me.
Thanks in advance.