Inner classes should appear in jar?

Question

At first thanks for answering my question: I did resolve the problem of excluding files, so the .java and .html are not present anymore�.. but the problem stays: I do see the applet in the applet viewer but not on the safari (mac Version 3.0.4) browser. The tag, I think is ok:
<applet code="Slides.class" width="500" height="500" archive="slides.jar"></applet>
A second question related to this problem might be, that the two inner class files that show up in the build/class file are not present in the jar. The application consists of just one single class (I already moved some initialization stuff from the constructor to the init). The class is called Slides.class and the compiler generates the Slides$1, Slides$xxx and Slides$yyyy. Should they all be included in the jar I only so the main class.
Thanks a lot
willemjav
The (still dirty) code is here (you need a folder with images files called xxxx#img01 etc.) and a first image called firstpic.jpg
* Slides
* Created on February 3, 2008, 10:25 PM
* The application does an applet slide show
* of a list of images files set in the folder
* Imagestore each 7 seconds changes the picture
* see DURATION
* still to do an image list check on file extentions
* and a fade in/ out
* @author wdragstra
import java.awt.*;
import java.awt.Image;
import java.awt.event.*;
import java.text.DecimalFormat;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.net.URL;
import java.io.*;
import java.awt.image.BufferedImage;
public class Slides2 extends JPanel implements ActionListener {
private int count, maxcount, x, y, duration,
textposx, textposy, imgwidth, imgheight;
static int framew, frameh;
private boolean intro;
private static final int LOAD = 7000, PAUSE=4000; // animation duration
private static final String FILE_NAME="Imagestore"; // the image file name in work directory
private File directory; // File object referring to the directory.
private String[] picfilenames; // Array of file names in the directory.
private JOptionPane infoPane;
private JPanel picttextPanel;
private JLabel textLabel;
private Timer load, timer, pause;
private Image firstpic;
private BufferedImage OSC;
public Slides2() { // construtor
framew = 350; // frame size to be set
frameh = 390;
textposx = 130; // text position to be set
textposy = 20;
duration = 9000; // image duration to be set
count=0; // image and textstring counters
maxcount = 0;
load = new Timer(LOAD, this); // the three animation timers
readImageFilelist(FILE_NAME); // get the content of the image folder
firstpic = downloadImage("firstpic.jpg");
orderImages();
timer = new Timer(duration, this);
infoPane = new JOptionPane(); // containing the 1) firstpic.jpg the
picttextPanel = new JPanel(); // first picture or only picture
textLabel = new JLabel(" INFO ", JLabel.CENTER); // 2) the parameter file called
this.setLayout(null); // imageanimater.txt 3) the imgefiles
textLabel.setBounds(textposy,textposx, 300 , 50); // with name xxxxx#img01 - 99
add(textLabel);
intro = true;
load.start();
public void actionPerformed(ActionEvent evt) { // timer listner
if (evt.getSource() == load) { // first timer only ones for first picture
// second timer for image duration
load.stop();
timer.start();
intro=false;
repaint();
if (evt.getSource() == timer) {
if (count == maxcount)
count = 0;
repaint();
count++;
void readImageFilelist(String dirname) { // gets the list of images
directory = new File(dirname); // of folder imagestore
if (directory.isDirectory() == false) { // in work directory
if (directory.exists() == false)
JOptionPane.showMessageDialog(infoPane,
" there is no directory called " + directory);
else
JOptionPane.showMessageDialog(infoPane, directory +
" is not a directory. ");
else {
picfilenames = directory.list(); // stores the list of file names
for (int i = 0; i < picfilenames.length; i++) {
if (imageNamecheck(picfilenames)) { // check correct file extension #img
picfilenamesmaxcount = picfilenames; // eliminate the incorrect ones
maxcount++;
if (maxcount == 0)
JOptionPane.showMessageDialog(infoPane,
"no valid files present ");
private boolean imageNamecheck(String st) {
int pos = st.indexOf("#img");
if (pos == -1)
return false;
else return true;
private int imagePos(String st) {
int posnmb=0; // convert string-number into int
int pos = st.indexOf("#img"); // when no image present returns -1
if (pos==-1) {
JOptionPane.showMessageDialog(infoPane,
"The file has�t the correct format #img01-#img99 ");
return 0;
else
return pos+4;
private void orderImages() { // sort de file list of images 00-99
int lastarray = maxcount-1;
int trynmb=0, maxnmb=0, index=0, pos=0;
String tempfl="";
while(lastarray != 0) {
index = 0;
pos = imagePos(picfilenames[0]);
try { maxnmb = Integer.parseInt(picfilenames[0].substring(pos, pos+2));
catch ( NumberFormatException e ) {
JOptionPane.showMessageDialog(infoPane,
"File format: #img01-#img99 " + e);
for (int i = 1; i <= lastarray; i++) {
pos = imagePos(picfilenames);
try { trynmb = Integer.parseInt(picfilenames.substring(pos, pos+2));
catch ( NumberFormatException e ) {
JOptionPane.showMessageDialog(infoPane,
"File format: #img01-#img99 " + e);
if (trynmb>maxnmb) {
maxnmb = trynmb;
index=i;
tempfl = picfilenameslastarray;
picfilenameslastarray = picfilenamesindex;
picfilenamesindex = tempfl;
lastarray--;
// for (int i = 0; i < maxcount; i++) {
//JOptionPane.showMessageDialog(infoPane,
// "last array " + i + " filename " + picfilenames);
private Image scaleImage(BufferedImage bimg) { // scale buffered image into image fill
try {
imgwidth = bimg.getWidth(this);
catch (Exception e) {
JOptionPane.showMessageDialog(infoPane, "can not get image width " + e);
try {
imgheight = bimg.getHeight(this);
catch (Exception e) {
JOptionPane.showMessageDialog(infoPane, "can not get image height " + e);
double scalerate = calcScale(imgwidth, imgheight); // calls the actual scaling method
imgwidth = (int)(imgwidth * scalerate);
imgheight = (int)(imgheight * scalerate);
x = (int)(framew - imgwidth)/2;
y = (int)(frameh - imgheight)/2;
DecimalFormat myFormatter = new DecimalFormat("######.##");
String xx = myFormatter.format(scalerate);
String yy = myFormatter.format(scalerate);
//JOptionPane.showMessageDialog(infoPane,
// "image size " + imgwidth + " / " + imgheight + " new size " + newidth + " / " + newheight + " scalerate " + xx
// + " insets " + insetw + " / " + inseth );
try {
Image img = bimg.getScaledInstance(imgwidth, imgheight, bimg.SCALE_FAST); // the actual scaling
return img;
catch (IllegalArgumentException e) {
JOptionPane.showMessageDialog(infoPane, " can not scale the image " + bimg + " " + e);
return null;
private double calcScale(int imgwidth, int imgheight) {
double sc=0, x=0;
if ((double)framew-imgwidth < frameh-imgheight) { // gets the smallest side of the picture
sc = (double)framew/imgwidth; // to scale to frame size (sc)
else {
sc = (double)frameh/imgheight;
return sc;
private Image downloadImage(String filename) { //downloads image and call the scaling
BufferedImage bufimg=null;
Image img=null;
ClassLoader cl = Slides2.class.getClassLoader();
URL imageURL = cl.getResource(filename);
try {
bufimg = ImageIO.read(imageURL);
img=scaleImage(bufimg);
catch (Exception e){
JOptionPane.showMessageDialog(infoPane, " can not download " + filename + " " + e);
return img;
private void displayText(int cnt) {
textLabel.setFont(new Font("Serif", Font.BOLD, 18));
textLabel.setForeground(Color.RED);
textLabel.setText("xcount maxcount " + count + " / " + maxcount);
public void paintComponent(Graphics g) { // the timer calls the component
// to draw the pictures
if (intro) { // the first pic and its display time
g.drawImage(firstpic,0, 0, imgwidth, imgheight, this);
else {
//g.drawImage(img, dest_x1, dest_y1, dest_x2, dest_y2,
// source_x1, source_y1, source_x2, source_y2, imageObserver); x=width y=height
g.setColor(Color.WHITE);
g.fillRect(0, 0, framew+10, frameh+10);
g.drawImage(downloadImage(picfilenamescount),x, y, imgwidth, imgheight,this);
//g.drawImage(firstpic,0, 0, imgwidth, imgheight, this);
displayText(7);
}

Answer 1

If the application is expecting to find an inner class in the jar - then yes, it must be there.
Put it in there and see what happens - it is probably needed there.