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combining two classes

 
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Hello All,
I have two classes and I want to use one class with the other class, The first class pulls out the table names from a database and puts the names into a comboBox then when the user selectes a table in the first comboBox the second comboBox list all the column names in that table.
The second class is a JTable with every cell holding a comboBox displaying in each comboBox 1,2,3 and 4,5,6.
How I can I get all the comboBoxes in the first row on the JTable to display all the TableNames that are in the comboxes in the 1st class?
Thanks Ben
1ST CLASS:

2ND CLASS:
 
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