Java JScrollPane - several components

.

, , , paintComponent(), BackgroundPanel . , , . , JLabel ImageIcon.

, , , , .

, , , , --- > JLayeredPane. , JLayeredPane, , . , , .. SetBounds() .

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;

public class PaintInScroll
{
    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                try
                {
                    Image backgroundImage = new ImageIcon(new URL(
                            "http://www.jvsearch.com/adidocs7_images/JAVAORANGE.JPG")).getImage();
                    BackgroundPanel bP = new BackgroundPanel(backgroundImage);
                    bP.setLayout(new BorderLayout());
                    bP.setPreferredSize(new Dimension(500, 500));
                    JLabel label = new JLabel(new ImageIcon(new URL(
                            "https://blogs.oracle.com/theplanetarium/resource/thumb-java-duke-guitar.png")));
                    bP.add(label, BorderLayout.CENTER);
                    JScrollPane scrollPane = new JScrollPane(bP);
                    scrollPane.setPreferredSize(new Dimension(300, 400));
                    JPanel contentPane = new JPanel();
                    contentPane.add(scrollPane);
                    JFrame f = new JFrame();
                    f.setContentPane(contentPane);
                    f.setSize(800, 600);
                    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    f.setVisible(true);
                }catch(MalformedURLException ex)
                {
                    Logger.getLogger(PaintInScroll.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }
}

class BackgroundPanel extends JPanel
{
    private Image image;

    public BackgroundPanel(Image image)
    {
        this.image = image;
    }
    private static final long serialVersionUID = 1L;

    @Override
    protected void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.drawImage(image, 0, 0, this.getWidth(), this.getHeight(), null);
    }
}

. - URL-, i-net.

EDIT1: , , JLayeredPane .

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;

public class PaintInScrollRespectingLayoutManagers extends JPanel
{
    private static final long serialVersionUID = 1L;
    private JLayeredPane layeredPane;
    private JLabel imageContainer = new JLabel();
    private JButton infoB = new JButton("i");
    private JScrollPane scrollPane;

    public PaintInScrollRespectingLayoutManagers(ImageIcon image)
    {
        super();
        this.imageContainer.setIcon(image);
        scrollPane = new JScrollPane(imageContainer);
        scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
        scrollPane.setPreferredSize(new Dimension(125, 90));
        JPanel iSPP = new JPanel();//image scroll pane panel
        iSPP.setOpaque(false);
        iSPP.add(scrollPane);
        JPanel iBP = new JPanel();//info button panel
        iBP.setOpaque(false);
        iBP.add(infoB);
        this.layeredPane = new JLayeredPane();
        layeredPane.add(iSPP, new Integer(50));
        layeredPane.add(iBP, new Integer(100));
        this.setLayout(new BorderLayout());
        this.add(layeredPane, BorderLayout.CENTER);
        this.add(new JButton("A button"), BorderLayout.SOUTH);
        layeredPane.addComponentListener(layeredPaneCL);
        setPreferredSize(new Dimension(300, 300));
    }
    private ComponentListener layeredPaneCL = new ComponentAdapter()
    {
        @Override
        public void componentResized(ComponentEvent e)
        {
            super.componentResized(e);
            System.out.println("componentResized");
            for(Component c : layeredPane.getComponents())
                c.setSize(layeredPane.getSize());
        }
    };

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                try
                {
                    JFrame frame = new JFrame();
                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    frame.add(new PaintInScrollRespectingLayoutManagers(new ImageIcon(new URL(
                            "http://www.prodeveloper.org/wp-content/uploads/2008/10/stackoverflow-logo-250.png"))));
                    frame.pack();
                    frame.setVisible(true);
                }catch(MalformedURLException ex)
                {
                    Logger.getLogger(PaintInScrollRespectingLayoutManagers.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }
}

NOTE 2: The only reason scrollbars have the SetPrefferedSize parameter, so you can see the scroll bars. Otherwise, do not use it to make the layout control the scroll bar.