How can I put a scroll bar on a frame?

Hello,
I have a class that extends JFrame, and I need the Frame have a scroll bar. How can I do so?

JFrame frame = new JFrame() ;
JScrollPane scrollpane = new JScrollPane() ;
JPanel panel=new JPanel();
JLabel label=new JLabel("Hello!");
label.setPreferredSize(new Dimension(2000,2000));
panel.add(label);
scrollpane.add(panel);
frame.setContentPane(scrollpane);
Does that work for you?
PS:scroll bar as needed is the default setting, so you don't actually need them. And yeah, your panel must be big enough to let the scroll bars show themselves.

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