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I'm trying to figure out a potential solution to a future problem

In my database, I have Subjects, Pupils, Subject_has_Pupils.

Subject French English Maths

Pupils John Mary Peter

Subject_has_pupils John - French Mary - Maths

As I KNOW what the correct data to enter is I can run my own inserts fine. If I was to try Insert Peter & Spanish into into Subject_has_Pupils, the insert obviously wouldn't work. But how is the user to know what value to put in for the Subject? Is it Possible to have a JList that displays the possible options to the user, and can then be inserted into the database.

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I suggest using a JComboBox to let the user pick only what you want him to pick. The JComboBox should be filled with data you retrieve from your database. I suggest taking a look at the following link if you have never worked with JComboBoxes before: http://docs.oracle.com/javase/tutorial/uiswing/components/combobox.html

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Thanks for your answer, that is exactly what I was thinking of. That's going to be really helpful!

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