PJC - Loading Images from JAR Files

I'm developing a PJC class that involves loading images. I would like to be able to find and use an image contained in a JAR file just like the built-in Forms items do; not the JAR file where my class is contained but any external ones defined in the server archive settings.
I have seen the loadImage method in the demo RolloverButton class but this only loads images from the class's JAR and not any others.
Is there a VButton method or an Oracle loader class for finding image resources from the defined JAR archives? If not, could someone supply some code for achieving this.
Thank you.

Hi,
the jar file name the images are in shouldn't matter for the code as long as the package name is preserved. If you want to see it with your own eyes, do the following
1. Back up demo90.jar
2. Create a copy of it and call it demo90img.jar
3. Open demo90.jar in winzip and remove all images
4. Open demo90img.jar and remove all Java classes
5. add ,/forms90demo/jars/demo90img.jar to the archive_jini tag of a demo you want to test this on
6. Run the application and see the images despite the fact they are now in a separate jar file. Note in the Jinitiator console that the new jar files are downloaded and replace the existing, cached, jars
7. Run an application that doesn't have demo90img.jar configured to see that the images are missing.
Frank

Similar Messages

Problem loading image from jar file referenced by jar file

First, I searched this one and no, I didn't find an answer. Loading images from jar files has been pretty much done to death but my problem is different. Please read on.
I have my application, a straight up executable running from Eclipse. It uses a jar file, call it JarA. JarA launches a GUI that is located in another jar file. Call it JarB. To recap:
My application calls JarA -> JarA loads classes from JarB -> JarB looks for images to place in a GUI it wants to show on the screen
When JarB goes to load an image the following happens:
java.lang.NullPointerException
     at sun.misc.URLClassPath$3.run(URLClassPath.java:316)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.misc.URLClassPath.getLoader(URLClassPath.java:313)
     at sun.misc.URLClassPath.getLoader(URLClassPath.java:290)
     at sun.misc.URLClassPath.findResource(URLClassPath.java:141)
     at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
     at java.lang.ClassLoader.getResource(ClassLoader.java:977)
     at org.cubrc.gmshell.gui.MainWin.preInit(MainWin.java:152)
     at org.cubrc.gmshell.gui.MainWin.<init>(MainWin.java:135)
The code from JarB that loads the image looks like this:
          URL[] oSearch = {Main.class.getResource("images/")};
          URLClassLoader oLoader = new URLClassLoader(oSearch);
          imgIcon = new ImageIcon(oLoader.getResource("icon.gif"));
          imgMatchRunning = new ImageIcon(oLoader.getResource("gears.gif"));
          imgMatchStill = new ImageIcon(oLoader.getResource("gears-still.gif"));
          imgMagnify = new ImageIcon(oLoader.getResource("magnify.gif"));This looks right to me and JarB certainly has an images directory with those files. But I'm in hell right now because I don't know where to place the images to make this work or if you can even attempt to load images with a dependency chain like this.
Any help very appreciated!

Have you tried to move your image-files out of the jar file and place them in the sam folder as the jar-file? I think that would help.
When you try to load the image-file you get the NullPointerException because the program tries to read a file it can't find. Remember that a jar file IS a file and not a directory.
If you want to read somthing inside the jar-file you need to encode it first.
Have you tried to read the jar-file with winRar. It makes it easy to add and remove files in your jar-file.

Loading images from jar file

i use the instruction below to load image contained in my jar file for distribution application but the image doesn't appear
icon = new ImageIcon("images/logo_tunisiana.GIF");
the jar file contain the image under a subdirectory called images.
Witch code sample have i to use ?
thanks in advance

I have an applet that is packaged in a jar file with images. I can access the images using:
aIcon = new ImageIcon(KeyboardApplet.class.getResource("images/keyimages/a.jpg"));

Loading image from jars only once in oracle forms 10g

Hi,
I have an oracle forms 10g application which loads image from a jar. Every time i click on a button "A" that loads the image "image" on another button "B" in the same screen, a message is displayed in the java console "Loaded image: jar:https://+IP+/forms/java/+myjar+.jar!/image.gif". So after 10 clicks, i get the same message displayed 10 times. In the form, i've called:
SET_CUSTOM_PROPERTY(p_object_name, 1, 'IMAGE_NAME_ON', '/'||p_image_name);My question is the following:
- is there a way to load this image once and use it later without having to load it every time i clik on "A"? if yes, how?
P.S.: if this thread shouldn't be posted in this forum, please redirect me to the right one.
Thanks in advance

Ah okay.
I'm using the rolloverbutton.jar (RollOver Button PJC) [RolloverButton.java -> authors: Steve Button, Duncan Mills].
Here is the part concerning the IMAGE_NAME_ON function:
// make sure we are in rollover mode
enableRollover();
log("setProperty - IMAGE_NAME_ON value=" + value.toString());
// load the requested image
m_imageNameOn = (String) value;
loadImage(ON,m_imageNameOn);
// reset the currrently drawn image if needed
setImage(ON,m_state);
return true;where loadImage function is:
    URL imageURL = null;
    boolean loadSuccess = false;
    //JAR
    log("Searching JAR for " + imageName);
    imageURL = getClass().getResource(imageName);
    if (imageURL != null)
      log("URL: " + imageURL.toString());
      try
        m_images[which] = Toolkit.getDefaultToolkit().getImage(imageURL);
        loadSuccess = true;
        log("Image found: " + imageURL.toString());
      catch (Exception ilex)
        log("Error loading image from JAR: " + ilex.toString());
    else
      log("Unable to find " + imageName + " in JAR");
    //DOCBASE
    if (loadSuccess == false)
      log("Searching docbase for " + imageName);
      try
        if (imageName.toLowerCase().startsWith("http://")||imageName.toLowerCase().startsWith("https://"))
          imageURL = new URL(imageName);
        else
          imageURL = new URL(m_codeBase.getProtocol() + "://" + m_codeBase.getHost() + ":" + m_codeBase.getPort() + imageName);
        log("Constructed URL: " + imageURL.toString());
        try
          m_images[which] = createImage((java.awt.image.ImageProducer) imageURL.getContent());
          loadSuccess = true;
          log("Image found: " + imageURL.toString());
        catch (Exception ilex)
          log("Error reading image - " + ilex.toString());
      catch (java.net.MalformedURLException urlex)
        log("Error creating URL - " + urlex.toString());
    //CODEBASE
    if (loadSuccess == false)
      log("Searching codebase for " + imageName);
      try
        imageURL = new URL(m_codeBase, imageName);
        log("Constructed URL: " + imageURL.toString());
        try
          m_images[which] = createImage((java.awt.image.ImageProducer) imageURL.getContent());
          loadSuccess = true;
          log("Image found: " + imageURL.toString());
        catch (Exception ilex)
                log("Error reading image - " + ilex.toString());
      catch (java.net.MalformedURLException urlex)
        log("Error creating URL - " + urlex.toString());
    if (loadSuccess == false)
      log("Error image " + imageName + " could not be located");In this case, what shall i modify?
Thanks in advance

How to load images from css file in JavaFX 8

I have this css file which loads images in JavaFX 8 application:
#pill-left {
    -fx-padding: 5;
     -fx-border-image-source: url("/com/dx57dc/images/left-btn.png");
    -fx-border-image-slice: 4 4 4 4 fill;
    -fx-border-image-width: 4 4 4 4;
    -fx-border-image-insets: 0;
    -fx-border-image-repeat: stretch;
     -fx-background-color: null !important;
#pill-left:selected { -fx-border-image-source: url("/com/dx57dc/images/left-btn-selected.png"); }
#pill-left .label {
    -fx-text-fill: #d3d3d3;
    -fx-effect: dropshadow( one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1 );
#pill-left:selected .label {
    /* -fx-text-fill: black; */
    -fx-text-fill: white;
    -fx-effect: dropshadow( one-pass-box , white , 0, 0.0 , 0 , 1 );
#pill-center {
    -fx-padding: 5;
     -fx-border-image-source: url("/com/dx57dc/images/center-btn.png");
    -fx-border-image-slice: 4 4 4 4 fill;
    -fx-border-image-width: 4 4 4 4;
    -fx-border-image-insets: 0;
    -fx-border-image-repeat: stretch;
     -fx-background-color: null !important;
#pill-center:selected { -fx-border-image-source: url("/com/dx57dc/images/center-btn-selected.png"); }
#pill-center .label {
    -fx-text-fill: #d3d3d3;
     -fx-effect: dropshadow( one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1 );
#pill-center:selected .label {
    -fx-text-fill: black;
    -fx-effect: dropshadow( one-pass-box , white , 0, 0.0 , 0 , 1 );
#pill-right {
    -fx-padding: 5;
    -fx-border-image-source: url("/com/dx57dc/images/right-btn.png");
    -fx-border-image-slice: 4 4 4 4 fill;
    -fx-border-image-width: 4 4 4 4;
    -fx-border-image-insets: 0;
     -fx-border-image-repeat: stretch;
    -fx-background-color: null !important;
#pill-right:selected { -fx-border-image-source: url("/com/dx57dc/images/right-btn-selected.png"); }
#pill-right .label {
     -fx-text-fill: #d3d3d3;
    -fx-effect: dropshadow( one-pass-box , rgba(0,0,0,0.75) , 0, 0.0 , 0 , -1 );
#pill-right:selected .label {
    -fx-text-fill: black;
    -fx-effect: dropshadow( one-pass-box , white , 0, 0.0 , 0 , 1 );
The images are located at the Java package com.dx57dc.images
In Java 7_25 this code works as expected but in JavaFX 8 b99 I get this error:
ava.lang.NullPointerException
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1129)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:233)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:199)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1249)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:233)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:199)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1249)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1598)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1520)
at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:99)
at com.sun.javafx.tk.quantum.AbstractPainter.paintImpl(AbstractPainter.java:210)
at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:95)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
at java.lang.Thread.run(Thread.java:724)
D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total
20 total resources being managed
4 permanent resources (20.0%)
1 resources locked (5.0%)
7 resources contain interesting data (35.0%)
0 resources disappeared (0.0%)
D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total
20 total resources being managed
4 permanent resources (20.0%)
1 resources locked (5.0%)
7 resources contain interesting data (35.0%)
0 resources disappeared (0.0%)
D3D Vram Pool: 13,331,480 used (5.0%), 13,331,480 managed (5.0%), 268,435,456 total
20 total resources being managed
4 permanent resources (20.0%)
1 resources locked (5.0%)
7 resources contain interesting data (35.0%)
0 resources disappeared (0.0%)
What is the proper way to load images from css in Java 8?
Ref
How to load images from css file in JavaFX 8 - Stack Overflow

There is nothing special to do - you execute the statement from your program just like any other SQL statement. The only thing to be aware of are the privilege/permission issues:
When loading from a file on a client computer:
READ CLIENT FILE privilege is also required for the database user.
Read privileges are required on the directory being read from.
The allow_read_client_file database option must be enabled.
The read_client_file secure feature must be enabled.
Revoking these privileges is also the only way you can prevent a user from executing the statement.

Reading Images from JAR Files

Hi,
I am having a very difficult time being able to read images from a JAR file via my Applet. I have tried everything that I know about with no luck. The only way I can get this to work is to store the images individually in a sub directory of public_html on the websever. This works, but I would like the images to come down in a JAR file for performance reasons.
I am using Internet Explorer 5.5 for my browser. I checked the options and everything seems to be in order, but......
I would appreciate any feedback that anyone might have on this topic..........
Thank You....

once in a jar file i inserted a image
the jar file on clicking starts an frame.
so the image was for getting that image at the icon place at top and at minimized window
i could not get that image from jar file by new imageicon().getimage();
but i get the image if it is in the directory in which jar file is.....
can one explain the reason

Loading library from jar file

Hi all,
My question is can we load library from jar file using System.load() method.
ex:
myJar.jar
|
|----com.test.common.Util
which conatins a method to load library from jar file itself, before that i used to load from File
|---libraries/MozillaParser/......
Iam able load from Local system,
File parserLibraryFile = new File("libraries/MozillaParser" + EnviromentController.getSharedLibraryExtension());
File mozillaDistBinDirectory = new File("libraries/mozilla.dist.bin."+EnviromentController.getOperatingSystemName());
MozillaParser.init(parserLibraryFile.getAbsolutePath() , mozillaDistBinDirectory.getAbsolutePath());
but i am unable to load from jar file
URL url = ClassLoader.getSystemClassLoader().getResource("libraries/MozillaParser" + EnviromentController.getSharedLibraryExtension());
URL url1 = ClassLoader.getSystemClassLoader().getResource("libraries/mozilla.dist.bin."+EnviromentController.getOperatingSystemName());
MozillaParser.init(url.toString(), url1.toString());
Thanks in advance.

That's a really confusing post.
The easiest way to make sure you can use the classes in a jar file is to copy the jar file to the "/jre/lib/ext" subfolder of your JDK. These classes will be visible to all applications.

Problem loading Applets from Jar files on 64 bit machine

I am developing an applet (extends Applet but uses swing components) using JDK 1.6 (Though these problems still happen in JDK 1.7) and I am unable to get the applet to load on a 64 bit machine in most cases. The web server(s) are running on localhost and I am connecting on the same machine using a local network ip address (such as 192.168.*.*)
Below are all of my test results. Can someone provide a suggestion for repairing this? The Windows Server machine is a clients computer I access to it via remote desktop but I can't do much with it though I do have administrator rights. The Windows 7 machine is my development platform so I have been able to do extensive testing on it.
This problem is presenting in the following environments when trying to load an applet from JAR files in a HTML document using the Applet or Object tag.
Windows Server 2008 (Intel Chipset)
Tested Browsers:
Internet Explorer 9 (32 bit) - Shows it is blocked by default then simply shows an x when loaded from a web page, same result when loading from local drive.
Windows 7 Home Premium (AMD Chipset)
Tested Browsers:
Firefox 6.0.1 (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
Internet Explorer 9 (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
Internet Explorer 9 (64 bit) - Java logo shows with spinner and most of the windows desktop manager freezes, keyboard is the only thing that responds so you can alt-tab to another app to regain control of the desktop.
Chrome (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
The only way I have been able to get a Java applet to run on a 64 bit machine are the following ways.
Firefox 9 nightly (64 bit) works perfectly! Go Firefox!
Internet Explorer 9 (32 bit) loading directly from drive (c:\...)
Chrome (32 bit) loading directly from drive (c:\...)
Firefox 6.0.1 (32 bit) loading directly from drive (c:\....)
Can someone please help! I've been fighting with this bug for over a week and I can't find anything that will solve it, I have noticed that in some cases if my jar has very little code in it than it will run on the server, but the minute I start adding things to it the jar won't load anymore.

jschell wrote:
rritoch wrote:
I am developing an applet (extends Applet but uses swing components) using JDK 1.6 (Though these problems still happen in JDK 1.7) and I am unable to get the applet to load on a 64 bit machine in most cases.
To clarify...
1. You have tried it on 32 bit machine? Exactly which OS?I tested this on Windows Vista Business which is in 32 bit mode and the applets run without any problems
>
2. Your only 64 bit tests have involved 2008/Win7?
If so then I would suspect something with windows not java. Probably permissions.
The web server(s) are running on localhost and I am connecting on the same machine using a local network ip address (such as 192.168.*.*)
Yes, I haven't tried running the jars on other operating systems.
>
I don't understand that. If you are running on localhost then you should connect to localhost. If running on an IP then you should connect to that. Perhaps you meant that you have tested using both of those?I'm testing using the lan ip address but I'm connecting from the same machine. I've tried localhost and that didn't work so I tried lan ip since that will likely have a different java security context than localhost. At first I was blaming the IIS server but I downloaded the jar directly and using HTTP fox was able to verify that the jar is being sent with the correct mime-type and that the server can upload the jar file without a problem. This leaves me to believe the problem is with Java.

Cannot load component from JAR file.

I got the message : cannot load component ... from JAR file. The class must be compiled and must be on the classpath of the project...
I just add a javabean from a JAR file from Palette manager, then drag and drop it, then got this message.
Can anyone tell me what i was wrong ? Thank you.

Hi,
You should paste your error log here to easy for other to help you.
For your scenario, it is a big chance you didn't include the jar file into your classpath, please check.
Thanks.

Loading images from jar

Found a good solution that works from running in command line, i.e java -jar or normally or using web start and not getting missing image URL loading from jar
It deserves some dukes :) Also, someone can improve on it to make sure it's 100%
Asume the function is in a package AWTUtilities class
Many forums provide close solution but they all forget the vital replacing back slash with forward slash when reading from jar!! :)
That's what got me stump for a good day trying to figure why it should load the images, but it's not...
Regards
Abraham Khalil
   // The subtlety in getResource() is that it uses the
   // Class loader of the class used to get the rousource.
   // This means that if you want to load a resource from
   // your JAR file, then you better use a class in the
   // JAR file.
   public static Image getImageResource( String name ) throws java.io.IOException {
      return getImageResource( AWTUtilities.class, name );
   public static Image getImageResource(Class base, String name ) throws java.io.IOException {
      if (name != null) {
         Image result = null;
         // A must, else won't pick the path properly within the jar!!
         // For file system forward or backward slash is not an issue
         name = name.replace('\\', '/');
         // For loading from file system using getResource via base class
         URL imageURL = base.getResource( name );
         // For loading from jar starting from root path using getResource via base class
         if (imageURL == null) {
            imageURL = base.getResource("/" + name );
         // For loading from file system using getSystemResource
         if (imageURL == null) {
            imageURL = ClassLoader.getSystemResource( name );
         // For loading from jar starting from root path using getSystemResource
         if (imageURL == null) {
            imageURL = ClassLoader.getSystemResource("/" + name );
         // Found the image url? If so, create the image and return it...
         if ( imageURL != null ) {
            Toolkit tk = Toolkit.getDefaultToolkit();
            result = tk.createImage( (ImageProducer) imageURL.getContent() );
         return result;
      else {
         return null;

The problem is that you use the wrong classloader. The system default classloader is the one that launched the webstart utility. It doesn't contain your classes or jars. You have to get hold of the classloader for your classes.
Here's my solution as a schetch: probably it won't compile but you get the idea:
// 1: get hold of the classloader for my classes:
// - this class cannot possibly be loaded by anyone else:
Object dummy = new Object(){
public String toString() { return super.toString(); }
ClassLoader cl = dummy.getClass().getClassLoader();
// 2: get an inputstream to read resource from from jar:
InputStream is = cl.getResourceAsStream("images/myimage.gif");
// 3: create image from inputstream
// can be done in many different ways using tmp-files etc.
ImageIcon icon = new ImageIcon(is);
Image img = icon.getImage();

Loading icons from jar file

Hello,
i am trying to load ALL imagefiles from my jar file. i do the following:
Class clazz = Class.forName("com.xxx.IconSelectionDialog");
String me = clazz.getName().replace(".", "/") + ".class";
dirURL = clazz.getClassLoader().getResource(me);
if (dirURL.getProtocol().equals("jar")) {
String jarPath = dirURL.getPath().substring(6, dirURL.getPath().indexOf("!")); //strip out only the JAR file
JarFile jar = new JarFile(jarPath );
Enumeration<JarEntry> entries = jar.entries(); //gives ALL entries in jar
while (entries.hasMoreElements()) {
JarEntry nextEntry = entries.nextElement();
String jarEntryName = nextEntry.getName();
this works fine with my debug local jws installation. when i try to run it online starting i get an error:
java.io.FileNotFoundException: xentis.jar (Das System kann die angegebene Datei nicht finden)
     at java.util.zip.ZipFile.open(Native Method)
     at java.util.zip.ZipFile.<init>(ZipFile.java:114)
     at java.util.jar.JarFile.<init>(JarFile.java:133)
     at java.util.jar.JarFile.<init>(JarFile.java:70)
how can i load ALL icons from a jar (without knowing the filename) ?
is there a generic way to iterate over all entries of a jarfile ?
thank you
michael

Look at "Loading Images Using getResource" on this page
http://java.sun.com/docs/books/tutorial/uiswing/components/icon.html
It should provide some ideas.

Loading images from Jar - Please help!

Tried with / in front of the path or without and using both
getImageResource and getSystemImageResource methods and no images
are showing.
My jar has manifest file of:
Main-Class: com.package.MainFrame
Class-Path: j2ee.jar
- blank line -
Thanks
Abraham Khalil
   // The subtlety in getResource() is that it uses the
   // Class loader of the class used to get the rousource.
   // This means that if you want to load a resource from
   // your JAR file, then you better use a class in the
   // JAR file.
   public static Image getImageResource( String name ) throws java.io.IOException {
      return getImageResource( AWTUtilities.class, name );
   public static Image getImageResource(Class base, String name ) throws java.io.IOException {
      Image result = null;
      URL imageURL = base.getResource( name );
      if (imageURL == null) {
         imageURL = base.getResource("/" + name );
      System.out.println("imageURL: " + imageURL + " AWTUtilities.class.getResource(" + name + ");");
      if ( imageURL != null ) {
         Toolkit tk = Toolkit.getDefaultToolkit();
         result = tk.createImage( (ImageProducer) imageURL.getContent() );
      return result;
   public static Image getSystemImageResource( String name ) throws java.io.IOException {
      Image result = null;
      URL imageURL = ClassLoader.getSystemResource( name );
      if (imageURL == null) {
         imageURL = ClassLoader.getSystemResource("/" + name );
      System.out.println("imageURL: " + imageURL + " = ClassLoader.getSystemResource(" + name + ");");
      if ( imageURL != null ) {
         Toolkit tk = Toolkit.getDefaultToolkit();
         result = tk.createImage( (ImageProducer) imageURL.getContent() );
      return result;

Hello,
you must put your images files under your package :
see full doc at this tutorial.
Hope this helps,
Neo

Why can I load Image from jar?

hi,all:
I've packed all gif images into a jar file,it works well on jdk1.4.2_05 with this command:
java -jar pos.jar
but failed on other jdk versions lower than jdk1.4.2_05.
here is the package structure:
├─resource
│ ├─configfile
│ └─images
here is the code getting url:
package resource
public class ResourceLoader {
public ResourceLoader() {
public URL getResource(String fileName){
URL url=ResourceLoader.class.getResource(fileName);
if(null==url){
throw new NullPointerException(fileName+" not found");
return url;
with this url, I will use
toolkit.getImage(url);
to load the image.
exception on 1.4.1_01:
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D2835EB
Function=JNI_OnLoad+0x249
Library=C:\j2sdk1.4.1_01\jre\bin\jpeg.dll
Current Java thread:
at sun.awt.image.JPEGImageDecoder.readImage(Native Method)
at sun.awt.image.JPEGImageDecoder.produceImage(JPEGImageDecoder.java:144
at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.j
ava:257)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:168)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136)
Dynamic libraries:
0x00400000 - 0x00406000 C:\j2sdk1.4.1_01\bin\java.exe
0x77F80000 - 0x77FFA000 C:\WINNT\system32\ntdll.dll
0x77D90000 - 0x77DEB000 C:\WINNT\system32\ADVAPI32.dll
0x77E60000 - 0x77F32000 C:\WINNT\system32\KERNEL32.dll
0x786F0000 - 0x7875E000 C:\WINNT\system32\RPCRT4.dll
0x78000000 - 0x78046000 C:\WINNT\system32\MSVCRT.dll
0x6D330000 - 0x6D45A000 C:\j2sdk1.4.1_01\jre\bin\client\jvm.dll
0x77DF0000 - 0x77E4F000 C:\WINNT\system32\USER32.dll
0x77F40000 - 0x77F79000 C:\WINNT\system32\GDI32.dll
0x77530000 - 0x77560000 C:\WINNT\system32\WINMM.dll
0x75E00000 - 0x75E1A000 C:\WINNT\system32\IMM32.DLL
0x6C330000 - 0x6C338000 C:\WINNT\system32\LPK.DLL
0x65D20000 - 0x65D74000 C:\WINNT\system32\USP10.dll
0x6D1D0000 - 0x6D1D7000 C:\j2sdk1.4.1_01\jre\bin\hpi.dll
0x6D300000 - 0x6D30D000 C:\j2sdk1.4.1_01\jre\bin\verify.dll
0x6D210000 - 0x6D229000 C:\j2sdk1.4.1_01\jre\bin\java.dll
0x6D320000 - 0x6D32D000 C:\j2sdk1.4.1_01\jre\bin\zip.dll
0x6D000000 - 0x6D0FB000 C:\j2sdk1.4.1_01\jre\bin\awt.dll
0x777C0000 - 0x777DE000 C:\WINNT\system32\WINSPOOL.DRV
0x75010000 - 0x75020000 C:\WINNT\system32\MPR.dll
0x77A30000 - 0x77B1C000 C:\WINNT\system32\ole32.dll
0x6D180000 - 0x6D1D0000 C:\j2sdk1.4.1_01\jre\bin\fontmanager.dll
0x51000000 - 0x51044000 C:\WINNT\system32\ddraw.dll
0x72800000 - 0x72806000 C:\WINNT\system32\DCIMAN32.dll
0x72CF0000 - 0x72D63000 C:\WINNT\system32\D3DIM.DLL
0x6DD30000 - 0x6DD36000 C:\WINNT\system32\INDICDLL.dll
0x53000000 - 0x53007000 C:\PROGRA~1\3721\helper.dll
0x70BD0000 - 0x70C34000 C:\WINNT\system32\SHLWAPI.dll
0x37210000 - 0x3723E000 C:\WINNT\DOWNLO~1\CnsMin.dll
0x777E0000 - 0x777E7000 C:\WINNT\system32\VERSION.dll
0x75950000 - 0x75956000 C:\WINNT\system32\LZ32.DLL
0x12F10000 - 0x12F25000 D:\JBuilder7\lib\ext\jbWheel.dll
0x6D280000 - 0x6D29E000 C:\j2sdk1.4.1_01\jre\bin\jpeg.dll
0x77900000 - 0x77923000 C:\WINNT\system32\imagehlp.dll
0x72960000 - 0x7298D000 C:\WINNT\system32\DBGHELP.dll
0x687E0000 - 0x687EB000 C:\WINNT\system32\PSAPI.DLL
Local Time = Fri Jul 16 10:06:45 2004
Elapsed Time = 2
# The exception above was detected in native code outside the VM
# Java VM: Java HotSpot(TM) Client VM (1.4.1_01-b01 mixed mode)
# An error report file has been saved as hs_err_pid2320.log.
# Please refer to the file for further information.

help!!!!

Load library from JAR file

Could I ask you guys a stupid question, please?
I have a library as an JAR file. I build my application as another JAR file, which includes that library file.
My manifest file is:
Manifest-Version: 0.1.0
Class-Path: lib/mysql-connector-java-3.0.17-ga-bin.jar
Main-Class: com.myappand the build command:
jar cvfm hello.jar mymanifest -c com -c libThe result hello.jar file built OK. But when I run it, I have to copy library file to the same folder to the app file.
Could you tell me how to load the lib file from hello.jar, instead of the lib file?
Thanks in advance!
Best regards,
Lehoanq

am I right in thinking you've put the mysql jar inside your application jar? jars don't work like that, I'm afraid. it is possible to write a classloader that will load classes from within a jar-inside-a-jar, but it gets rather complicated and messy and isn't worth the hassle to be honest, anyway. we go to some lengths to keep our software modular and separate. imagine, for instance, that a bug is exposed in the mysql driver you're using, and a new release is needed to fix it. the dependency is rooted inside your application, so the whole shebang has to be re-packaged and re-deployed, whereas if your dependencies were inside a lib folder, all that would be needed is to drop the new version of the mysql driver into the lib directory. think "don't put all your eggs in one basket"
what you want to do is possible, and there are tools around to do it for you, too, but IMHO it's not worth the effort

Problem loading image (from JAR)

Hi
I was wondering why this code works when running the app in my IDE, but not once exported in a JAR file:
public static BufferedImage loadDefaultCover()
          try
               return ImageIO.read(new File("./images/default.png"));
          }catch(IOException e)
               logger.severe("Failed loading default img: "+e.getMessage());
          return null;
     }     NOTE 1: The cover is located (project root)/images/default.png
NOTE 2: It works when I have a folder named images (with the image in it) next to the JAR.
NOTE 3: I tried:
return ImageIO.read(new File("images/default.png"));
return ImageIO.read(new File("/images/default.png"));Any ideas? Thanks!
Andrew
Edited by: Andrew_ on Jan 4, 2009 12:45 PM

You can't use File references to access resources in a jar file (technically, they are not presen in the file system but part of a zip file). Instead, you can load those resources via the classloader:
return ImageIO.read(getClass().getClassLoader().getResourceAsStream("images/default.png"));

PJC - Loading Images from JAR Files

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