JScrollPane не появляется полоса прокрутки

jPanel2.setSize(jPanel2.getWidth(), 1000);

jPanel1.setViewportView(jPanel2);
//jPanel1 - JScrollPane

TexturesLoad_panel = new javax.swing.JScrollPane();
TexturesLoad_panel.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
TexturesLoad_panel.setViewportView(jPanel2);

public static void main(final String [] args) throws Exception {
    final JPanel view = new JPanel();
 
    final JScrollPane scrollPane = new JScrollPane();
    scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    scrollPane.setViewportView(view);
 
    final JButton button = new JButton("+1000");
    button.addActionListener(new ActionListener() {
 
        @Override
        public void actionPerformed(final ActionEvent e) {
            final Dimension d = new Dimension(view.getWidth(), view.getHeight() + 1000);
            view.setPreferredSize(d);
            view.revalidate();
        }
 
    });
    final JPanel contentPane = new JPanel(new BorderLayout());
    contentPane.add(scrollPane, BorderLayout.CENTER);
    contentPane.add(button, BorderLayout.NORTH);
 
    final JFrame f = new JFrame("test");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setContentPane(contentPane);
    f.pack();
 
    f.setVisible(true);
}