swing パネルにラベルを付ける際に座標を指定して付ける方法

javaのswingでパネルにラベルを座標指定で設定したいのですがわかりません。
コードも込みで教えていただけるとありがたいです。

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.*;

import javax.swing.*;
import javax.swing.border.LineBorder;

public class Layout5 extends JFrame {
    JLabel label1;
    JLabel label2;
    JLabel label3;
    JLabel label4;
    JPanel panel1;
    JPanel panel2;
    JPanel panel3;
    CardLayout layout;

    public static void main(String[] args) {
        Layout5 frame = new Layout5("例");
        frame.setVisible(true);
    }

    Layout5(String title) {
        setTitle("例");
        setBounds(100, 100, 250, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        label1 = new JLabel("1");
        panel1 = new JPanel();
        label1.setBorder(new LineBorder(Color.blue, 2, true));
        panel1.setPreferredSize(new Dimension(200,100));
        label1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                layout.show(getContentPane(), "panel2");
            }
        });
        //座標指定
        Dimension d = label1.getPreferredSize();
        label1.setBounds(50, 100, d.width, d.height);
        panel1.add(label1);

        panel2 = new JPanel();
        label2 = new JLabel("2");
        label2.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                layout.show(getContentPane(), "panel3");
            }
        });
        panel2.add(label2);

        panel3 = new JPanel();
        label3 = new JLabel("3");
        label3.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                layout.show(getContentPane(), "panel1");
            }
        });
        panel3.add(label3);

        label4 = new JLabel("4");
        label4.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                layout.show(getContentPane(), "panel3");
            }
        });
        panel1.add(label4);
        label4.setBorder(new LineBorder(Color.blue, 2, true));

        layout = new CardLayout();

        Container contentPane = getContentPane();
        contentPane.setLayout(layout);

        JScrollPane scrollpane1 = new JScrollPane(panel1);
        scrollpane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

        JScrollPane scrollpane2 = new JScrollPane(panel2);
        scrollpane2.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane2.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

        JScrollPane scrollpane3 = new JScrollPane(panel3);
        scrollpane3.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane3.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
        panel3.setPreferredSize(new Dimension(1000,1000) );

        contentPane.add(scrollpane1,"panel1");
        contentPane.add(scrollpane2, "panel2");
        contentPane.add(scrollpane3, "panel3");
    }

}