Adding java 2d graphices to a JScrollPane

Question

How can I use the graphics 2d in a Java Applet JScrollPane?
here is me code. I have a a ImageOps.java file that does a bunch of Java 2d, but I need it to fit into my applet's JScrollPane. Can anyone help me?
package louis.tutorial;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JApplet;
import java.awt.Dimension;
import javax.swing.JInternalFrame;
import javax.swing.JButton;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Rectangle;
import java.awt.Point;
import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.JTextArea;
import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.ImageIcon;
import javax.swing.KeyStroke;
import java.awt.FileDialog;
import java.awt.Toolkit;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import javax.swing.JScrollPane;
* Place class description here
* @version 1.0
* @author llakser
public class ImageApplet extends JApplet {
private JPanel jContentPane = null;
private JPanel jpLower = null;
private JButton JBFirst = null;
private JButton JBPrevious = null;
private JButton JBNext = null;
private JButton JBLast = null;
private JButton JBZoonIn = null;
private JButton JBZoomOut = null;
private JButton JBAnimate = null;
private JButton JBPause = null;
private JButton JBAutoRepeat = null;
private JComboBox jcbFrameDelay = null;
private BufferedImage image; // the rasterized image
private Image[] numbers = new Image[10];
private Thread animate;
private MediaTracker tracker;
private int frame = 0;
private ImageIcon[] icon = null;
private JFrame f = new JFrame("ImageOps");
* This is the xxx default constructor
public ImageApplet() {
     super();
* This method initializes this
* @return void
public void init() {
     this.setSize(600, 600);
     this.setContentPane(getJContentPane());
     this.setName("");
     this.setMinimumSize(new Dimension(600, 600));
     this.setPreferredSize(new Dimension(600, 600));
// f.addWindowListener(new WindowAdapter() {
// public void windowClosing(WindowEvent e) {System.exit(0);}
ImageOps applet = new ImageOps();
//getJContentPane().add("Center", f);
getJContentPane().add("Center", applet);
//applet.add(f);
applet.init();
f.pack();
f.setSize(new Dimension(550,550));
f.setVisible(true);
public void load() {
     tracker = new MediaTracker(this);
     for (int i = 1; i < 10; i++) {
     numbers[i] = getImage (getCodeBase (), i+".jpeg");//getImage(getDocumentBase(), "Res/" + i + ".gif");
     //Image img;
     //ico[i] = new ImageIcon(getCodeBase (), i+".jpeg");
     /* if (fInBrowser)
     img = getImage (getCodeBase (), "1.jpeg");
     else
     img = Toolkit.getDefaultToolkit ().getImage (
     "1.jpeg");*/
     tracker.addImage(numbers, i);
     try {
     tracker.waitForAll();
     } catch (InterruptedException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
     int i = 1;
     // for (int i = 1; i < 10; i++)
          icon[0] = new ImageIcon ("C:/images2/1.jpeg");//getImage(getDocumentBase(), "Res/" + i + ".gif");
          //icon[0] = new ImageIcon("C:/images2/1.jpg");
          //System.out.println("Made it after icon " + ico.toString());
          //ImageIcon ii = new ImageIcon("1.jpg");
          //jLabel = new JLabel(icon);
          //jLabel.setText("JLabel");
          //jLabel.setIcon(icon[0]);
     Graphics g = null;
          //g.drawImage(numbers[1],0,0,1500,1400,jScrollPane);
     //ImageIcon ii = new ImageIcon(numbers[2]);
     //this.jScrollPane.add(new JLabel(ii));// = new JScrollPane(new JLabel(ii));
     // System.out.println("Gee I made it..");
          //scroll.paintComponents(g);
          //paintComponents(g);
public void paintComponents(Graphics g) {
super.paintComponents(g);
// Retrieve the graphics context; this object is used to paint shapes
Graphics2D g2d = (Graphics2D)g;
// Draw an oval that fills the window
int width = this.getBounds().width;
int height = this.getBounds().height;
Icon icon = new ImageIcon("C:/images2/1.jpg");
//jLabel.setIcon(icon);
//g2d.drawImage(0,0,1500,1400);
g2d.drawOval(10,20, 300,400);
// and Draw a diagonal line that fills MyPanel
g2d.drawLine(0,0,width,height);
* This method initializes jContentPane
* @return javax.swing.JPanel
private JPanel getJContentPane() {
     if (jContentPane == null) {
     jContentPane = new JPanel();
     jContentPane.setLayout(new BorderLayout());
     jContentPane.setPreferredSize(new Dimension(768, 576));
     jContentPane.setMinimumSize(new Dimension(768, 576));
     jContentPane.setName("");
     jContentPane.add(getJpLower(), BorderLayout.SOUTH);
     return jContentPane;
* This method initializes jpLower     
* @return javax.swing.JPanel     
private JPanel getJpLower() {
if (jpLower == null) {
     try {
     jpLower = new JPanel();
     jpLower.setLayout(null);
     jpLower.setPreferredSize(new Dimension(500, 100));
     jpLower.setMinimumSize(new Dimension(500, 160));
     jpLower.add(getJBFirst(), null);
     jpLower.add(getJBPrevious(), null);
     jpLower.add(getJBNext(), null);
     jpLower.add(getJBLast(), null);
     jpLower.add(getJBZoonIn(), null);
     jpLower.add(getJBZoomOut(), null);
     jpLower.add(getJBAnimate(), null);
     jpLower.add(getJBPause(), null);
     jpLower.add(getJBAutoRepeat(), null);
     jpLower.add(getJcbFrameDelay(), null);
     } catch (java.lang.Throwable e) {
     // TODO: Something
return jpLower;
* This method initializes JBFirst     
* @return javax.swing.JButton     
private JButton getJBFirst() {
if (JBFirst == null) {
     try {
     JBFirst = new JButton();
     JBFirst.setText("First");
     JBFirst.setLocation(new Point(7, 7));
     JBFirst.setSize(new Dimension(59, 26));
     JBFirst.addActionListener(new java.awt.event.ActionListener() {
     public void actionPerformed(java.awt.event.ActionEvent e) {
          System.out.println("First Button Clicked()");
     load();
          // TODO Auto-generated Event stub actionPerformed()
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBFirst;
* This method initializes JBPrevious     
* @return javax.swing.JButton     
private JButton getJBPrevious() {
if (JBPrevious == null) {
     try {
     JBPrevious = new JButton();
     JBPrevious.setText("Previous");
     JBPrevious.setLocation(new Point(69, 7));
     JBPrevious.setSize(new Dimension(94, 26));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBPrevious;
* This method initializes JBNext     
* @return javax.swing.JButton     
private JButton getJBNext() {
if (JBNext == null) {
     try {
     JBNext = new JButton();
     JBNext.setText("Next");
     JBNext.setLocation(new Point(166, 7));
     JBNext.setSize(new Dimension(66, 26));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBNext;
* This method initializes JBLast     
* @return javax.swing.JButton     
private JButton getJBLast() {
if (JBLast == null) {
     try {
     JBLast = new JButton();
     JBLast.setText("Last");
     JBLast.setLocation(new Point(235, 7));
     JBLast.setSize(new Dimension(59, 26));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBLast;
* This method initializes JBZoonIn     
* @return javax.swing.JButton     
private JButton getJBZoonIn() {
if (JBZoonIn == null) {
     try {
     JBZoonIn = new JButton();
     JBZoonIn.setText("Zoom In");
     JBZoonIn.setLocation(new Point(408, 7));
     JBZoonIn.setPreferredSize(new Dimension(90, 26));
     JBZoonIn.setSize(new Dimension(90, 26));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBZoonIn;
* This method initializes JBZoomOut     
* @return javax.swing.JButton     
private JButton getJBZoomOut() {
if (JBZoomOut == null) {
     try {
     JBZoomOut = new JButton();
     JBZoomOut.setBounds(new Rectangle(503, 7, 90, 26));
     JBZoomOut.setPreferredSize(new Dimension(90, 26));
     JBZoomOut.setText("Zoom Out");
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBZoomOut;
* This method initializes JBAnimate     
* @return javax.swing.JButton     
private JButton getJBAnimate() {
if (JBAnimate == null) {
     try {
     JBAnimate = new JButton();
     JBAnimate.setText("Animate");
     JBAnimate.setSize(new Dimension(90, 26));
     JBAnimate.setPreferredSize(new Dimension(90, 26));
     JBAnimate.setLocation(new Point(408, 36));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBAnimate;
* This method initializes JBPause     
* @return javax.swing.JButton     
private JButton getJBPause() {
if (JBPause == null) {
     try {
     JBPause = new JButton();
     JBPause.setPreferredSize(new Dimension(90, 26));
     JBPause.setLocation(new Point(503, 36));
     JBPause.setSize(new Dimension(90, 26));
     JBPause.setText("Pause");
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBPause;
* This method initializes JBAutoRepeat     
* @return javax.swing.JButton     
private JButton getJBAutoRepeat() {
if (JBAutoRepeat == null) {
     try {
     JBAutoRepeat = new JButton();
     JBAutoRepeat.setBounds(new Rectangle(446, 65, 106, 26));
     JBAutoRepeat.setText("Auto Repeat");
     } catch (java.lang.Throwable e) {
     // TODO: Something
return JBAutoRepeat;
* This method initializes jcbFrameDelay     
* @return javax.swing.JComboBox     
private JComboBox getJcbFrameDelay() {
if (jcbFrameDelay == null) {
     try {
     jcbFrameDelay = new JComboBox();
     jcbFrameDelay.setSize(new Dimension(156, 25));
     jcbFrameDelay.setName("Frame Delay");
     jcbFrameDelay.setLocation(new Point(7, 35));
     } catch (java.lang.Throwable e) {
     // TODO: Something
return jcbFrameDelay;
} // @jve:decl-index=0:visual-constraint="10,10"

Answer 1

I think you've got it:
public class ImageComponent extends JPanel { //or JComponent
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        //do your rendering here
}The fact that ImageComponent sits inside JScrollPane is accidental, right?
It should be able to function on its own, without a JScrollPane present, just as JTextArea can.
So I'm not sure what your question is. Can you post a small (<1 page)
example program demonstrating your problem.
For example, here are a very few lines demonstrating what I am trying to say:
import java.awt.*;
import javax.swing.*;
class CustomExample extends JPanel {
    public CustomExample() {
        setPreferredSize(new Dimension(800,800));
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.fillOval(0, 0, getWidth(), getHeight());
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable(){
            public void run() {
                JFrame f = new JFrame("CustomExample");
                f.getContentPane().add(new JScrollPane(new CustomExample()));
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.setSize(400,400);
                f.setLocationRelativeTo(null);
                f.setVisible(true);
}Now you post your problem in a program that is just as short.