How to use JScrollPane with JPanel (Null layout)

Question

I have a JButton which generates a JPanel that contains a set of JLabel components. As you can see, the amount of labels can be a bit too much for 600x600 frame to hold. I tried adding JScrollPane, but nothing works for some reason. Changing layout manager to something other than null and adding scroll pane completely breaks the panel and frame just appears completely blank.

createTable.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        try {
            ReadFile file = new ReadFile(path);
            String[] aryLines = file.OpenFile();

            JFrame frame2 = new JFrame("Table");
            JPanel panel = new JPanel();

           // JScrollPane scrollPane = new JScrollPane(panel);

            frame2.setSize(600, 300);
            panel.setBounds(0, 0, 600, 600);

            panel.setLayout(null);
            //scrollPane.setPreferredSize(new Dimension(600,300));

            for (counter = aryLines.length; counter > 0; counter-=6) {
                JLabel jLabel1 = new JLabel("Имя: "+ aryLines[counter-6]);
                JLabel jLabel2 = new JLabel("Деталь: " +aryLines[counter-5]);
                JLabel jLabel3 = new JLabel("Дата прибытия заказа: " + aryLines[counter-3]);
                JLabel jLabel4 = new JLabel("Дата заказа детали: " + aryLines[counter-4]);

                JCheckBox jCheckBox = new JCheckBox();
                JTextArea area = new JTextArea(Integer.toString(counter));

                jLabel1.setBounds(15, 5 + (counter - 6)*30, 300, 20);
                jLabel2.setBounds(15,35 + (counter - 6)*30, 300, 20);
                jLabel3.setBounds(15, 70 + (counter - 6)*30, 300, 20);
                jLabel4.setBounds(15, 100 + (counter - 6)*30,300,20);

                //jLabel.setBackground(Color.BLACK);
                panel.add(jLabel1); panel.add(jLabel2); panel.add(jLabel3); panel.add(jLabel4);

                //panel.add(jCheckBox);
            }
           // scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
            //scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
           // frame2.getContentPane().add(scrollPane);
            frame2.add(panel);
            //panel.add(scrollPane);
            frame2.setLayout(null);
            frame2.setVisible(true);
        } catch (IOException et){System.out.println("Error in CreateTable doc parser");}
    }
});