How to put a JButton at a specific location?

I know that there are already very similar questions to my question on stackoverflow, but neither one of them answers my question. I want to put my JButton on a specific location on my JFrame in JAVA. Here is my Code:

public class DetectMotion extends JFrame {

private JLabel label = null;

public DetectMotionExample() {

    JPanel pnlButton = new JPanel();
    label = new JLabel(nothing);
    JButton btn = new JButton("Close");

    pnlButton.setLayout(new BorderLayout());

    setTitle("Motion Detector");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLayout(new FlowLayout());

    btn.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e) {
            if (e.getActionCommand().equals("Close")) {
                //TO-DO
            }
        }
    });

    WebcamPanel panel = new WebcamPanel(webcam);

    add(panel);
    pnlButton.add(btn,BorderLayout.SOUTH);
    pnlButton.add(label,BorderLayout.NORTH);
    add(pnlButton);

    pack();
    setVisible(true);
}

}

I have a panel on my JFrame (webcamPanel) and a JPanel called pnlButton that includes the JButton (btn) and JLabel (label).

Now, how can I specifically change the location of my button instead of just using BorderLayout.NORTH?

Thanks!