Tableview and database table binding problems in javafx.

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for example, the information in the database cannot be bound. I tried to pass a database object to the constructor of the class bound to ObservableList (called student), and then when I constructed the student object, I called the add method in the database object, and the add method added a student to the database with other parameters passed to the student ().
but encountered an alarm.

Database javafx

Mar.10,2022

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