Question

I have a class called Database with an arrayList called applicants. Each record in the arrayList applicants is an arrayList of applicant details. (So Database class contains an arrayList of arrayLists).

I also have a class called GUI which contains a JTable:

String[] columnNames = {"Application number",
                                "Program",
                                "Name",
                                "Date",
                                "Accepted?"};

Object[][] data = {Database.applicants};

Whenever i compile it says: “Non static variable applicants cannot be referenced from a static context”

Any pointers on what i may need to do would be really appreciated.

Thanks in advance.

Answer 1

Would i need to convert the arrayList to a List?

You are trying to assign an ArrayList to an Array, so you would need to copy the data from the ArrayList to the Array.

Or another option is to create a custom TableModel that uses an ArrayList to hold the data for the model. See the section from the Swing tutorial on Creating a Table Model.