Question

I am using a DAO Factory to get my Data from the database. When i am running my program the data is showing in the printline so he is getting it out of the database. But i want it to show in my JTable but this one is empty and i dont know how to fill it.

Code JFrame:

package View;

import java.awt.Container;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionListener;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.WindowConstants;
import javax.swing.table.TableModel;

import Controller.VerwijderController;
import Model.OefeningenListModel;
import Model.OefeningenTableModel;

public class VerwijderenHome extends JFrame {

    private JList LijstOefening;
    private JScrollPane jScrollPane1;
    private Container window = getContentPane();
    private JButton delete;
    private VerwijderController Controller;
    private JTable tabel;

    public VerwijderenHome()
    {
        initGUI();
    }

    public void addDeleteListener(ActionListener a){
        delete.addActionListener(a);
    }

    private void initGUI() {
        setPreferredSize(new Dimension(800, 600));
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setLayout(null);
        setVisible(true);

        JTable table = new JTable(new OefeningenTableModel());              
        JScrollPane scrollPane = new JScrollPane(table);  
        scrollPane.setBounds(50, 50, 300, 60);
        window.add(scrollPane);

        delete = new JButton("Delete");
        delete.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
        delete.setBounds(50, 265, 100, 30);
        window.add(delete);

        pack();


        Controller = new VerwijderController();
        addDeleteListener(Controller);

    }

    public JButton getDelete(){
        return delete;
    }

    public JList getLijst()
    {
        return LijstOefening;


}
    }

Code DefaultTableModel?? (Dont know if i must use this one)

package Model;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Vector;

import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;

import datapackage.DAOFactory;

public class OefeningenTableModel extends DefaultTableModel {

      ArrayList<Oefening> oefeningen;

      public OefeningenTableModel(){

          oefeningen = DAOFactory.getFactory(0).getIDAOOefening().load();

      }




    }

Answer 1

The DefaultTableModel is backed by a Vector representing the columns and rows of the table model.

You’ve provided your own ArrayList of objects, but you’ve not overridden the methods you will require to supply that data back to the table. The DefaultTableModel has no idea of your ArrayList

Try overridding some of the following;

public class OefeningenTableModel extends AbstractTableModel {

    ArrayList<Oefening> oefeningen;

    public OefeningenTableModel(){
        oefeningen = DAOFactory.getFactory(0).getIDAOOefening().load();
    }    

    @Override
    public int getRowCount() {
        return oefeningen.getSize();
    }

    @Override
    public int getColumnCount() {
        // You'll need to fill this out to meet your requirements
    }

    @Override
    public String getColumnName(ing column) {
        // You'll need to fill this out to meet your requirements
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        // You'll need to fill this out to meet your requirements
    }

}

Take the time to have read through How to use Tables.