Add images in jar file

how to add images in jar file?

Check this article in ADF code corner:
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/86-images-from-jar-427953.pdf
Thanks,
Navaneeth

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.

How to add one poi jar file into webdynpro project

Hi all:
We would like to add one poi jar file into one webdynpro project, however, what should we do ?
Its one external 3rd party jar file.

Hi,
To add a jar file you need to have an external library DC.
Hope the below link will help you:
[http://help.sap.com/saphelp_nw70/helpdata/en/46/3ce3e4df201d63e10000000a11466f/frameset.htm]
thanks & regards,
Manoj

Applet : How to use Images in Jar file

I want to put all images into a jar file to improve speed of loading.
But how to invoke images from Jar file?
Thanks.

@Op. It's very important for a developer to know how to find information, and that skill usually comes with experience. Google is one of the best ways to find information and solutions to the most common problems.
Kaj

How to add the mail.jar file to my CLASSPATH ?

Hi;
I wish to Instal JavaMail 1.2
To use the JavaMail 1.2 API, i unbundle the javamail-1_3_1-upd.zip file.....and now, i would like to add the mail.jar file to your CLASSPATH.
My question is: how do you do this ?
- ok i did that for CATALINA_HOME & JAVA_HOME but how to add the mail.jar file to my CLASSPATH ??
1000 thanks.

I think you're looking for "developer support", not packaged application support. different server, different batch of groups. . .
Since I have very little contact with devopers, I don't truly know.

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

Images in Jar files

Hi,
I am creating a recipe book application. Everything is exactly how I want to so I am trying to make a jar file with it.
On the first screen that loads there is one image, when I make the jar file it doesn't seem to be able to find the image once I am outside of eclipse and running the jar.
I have created a folder in called resources in my scr folder (src/resources) this is where I am storing the image.
The method near the bottom (private void addPic()) is where I am having troubles.
package recipe1_5;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import javax.imageio.*;
import java.awt.image.*;
* This provides an entry point into the program
* as well as the first window
* the main() function is at the bottom
public class Main implements ActionListener {
     JFrame f = new JFrame();
     Container p = f.getContentPane();
     JButton newR = new JButton("Add a New Recipe");
     JButton oldR = new JButton("Look Up An Old Recipe");
     JLabel title = new JLabel("Please make a selection");
     public void actionPerformed(ActionEvent e){
          String whichButton = e.getActionCommand();
          if(whichButton.equals("Add a New Recipe")){
               @SuppressWarnings("unused")
               Recipe newRecipe = new Recipe();
               f.setVisible(false);
               f.dispose();
          if(whichButton.equals("Look Up An Old Recipe")){
               @SuppressWarnings("unused")
               OldRecipeChooser orc = new OldRecipeChooser();
               f.setVisible(false);
               f.dispose();
     }//END actionPerformed
     public Main(){
          f.setSize(200,300);
          f.setLocation(500,100);
          f.setTitle("Recipe Magic");
          p.setLayout(new FlowLayout());
          p.add(title);
          p.add(newR);
          p.add(oldR);
          newR.addActionListener(this);
          oldR.addActionListener(this);
          addPic();
          f.setVisible(true);
          f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     }//END contr ChooseWindow()
     private void addPic(){
          try{
               String imgLocal = System.getProperty("user.dir");
               if(System.getProperty("os.name").contains("Windows")){
                    imgLocal += "\\RecipeMagic1_5.gif";
                    JOptionPane.showMessageDialog(null, imgLocal);
               else
                    imgLocal += "/RecipeMagic1_5.gif";
               BufferedImage image = ImageIO.read(new File(System.getProperty("user.dir" + imgLocal)));
               JLabel pic = new JLabel(new ImageIcon(image));
               p.add(pic);
          catch(Exception e){
               JOptionPane.showMessageDialog(null, "Image Load Error","ERROR", JOptionPane.ERROR_MESSAGE);
               e.printStackTrace();
     public static void main(String args[]){
          Main m = new Main();
}//END class ChooseWindowI have tryed this two different ways. The first how it is. And the second with something like this:
ImageIcon ii = new ImageIcon(getClass().getResource("resources/RecipeMagic1_5"));Any insight on how to get the image from inside of the jar file would be great
Forgot to add, it either throws a NullPointerException or a FileNotFoundException in the catch clause of addPic()
Edited by: tyelford on Dec 15, 2010 11:46 AM

Ok, so it works good on Mac, but if I try to use it on Windows it will not load the image,
Here is the code that works on Mac but not windows:
private void addPic(){
          try{
               String imgLocal = System.getProperty("user.dir");
               if(System.getProperty("os.name").contains("Windows")){
                    imgLocal = "resources\\RecipeMagic1_5\\RecipeMagic1_5.gif";
               else
                    imgLocal = "resources/RecipeMagic1_5/RecipeMagic1_5.gif";
               ImageIcon ii = new ImageIcon(getClass().getResource(imgLocal));
               JLabel pic = new JLabel(ii);
               p.add(pic);
          catch(Exception e){
               JOptionPane.showMessageDialog(null, "Image Load Error","ERROR", JOptionPane.ERROR_MESSAGE);
               e.printStackTrace();
     }I get an Image Load Error on Windows, but the same file on Mac runs perfect

Images in jar file, Please help!!

Hello,
This is my code, I am trying to add images to buttons in ToolBar. The code along with images works if I say "java ABC", but dont work(images dont appear) when I jar the files. I have tried all the possible methods, Please help me.
          new2 = new JButton(new ImageIcon("images/new.gif"));
          /*try{
          ClassLoader loader=getClass().getClassLoader();
          URL fileLocation=loader.getResource("./images/new.gif");
          Image img=Toolkit.getDefaultToolkit().getImage(fileLocation);
          new2 = new JButton(new ImageIcon(img));
          }catch(Exception e) { e.printStackTrace(); }*/
          //new2 = new JButton(new ImageIcon(ClassLoader.getSystemResource("images/new.gif")));
          //new2 = new JButton(new ImageIcon(Toolkit.getDefaultToolkit().getImage(getClass().getResource("./images/new.gif"))));
          //ImageIcon oo = new ImageIcon();
          //new2 = new JButton(oo.setImage(getClass().getResource("images/new.gif")));
               new2.setToolTipText("New");
Thanks
James

Hello,
The code is too big to post, I am adding the code that is required to get changed, please see it
          open2 = new JButton(new ImageIcon("images/open.gif"));
               open2.setToolTipText("Open");
               open2.addActionListener(this);
               open2.addMouseListener(new MouseAdapter()
                    public void mouseEntered(MouseEvent me)
                         status.setText("Opens a file");
                    public void mouseExited(MouseEvent me)
                         status.setText("open");
Thanks
James

Including images in jar executable files. Using images in jar files.

Does anybody know what is the reason of my problem??
I created a package called test in my eclipse env. and in that package I placed folder named graph in which there is a file Help.png.
Here is all the code I run in eclipse and it runs properly. When I create a jar file (using eclipse wizard) to execute without eclipse it can not execute and shows nothing (process starts and I have to kill it by myself in OS). Maybe there is some mistake with making jar... I do not know
So let someone try tu run my class or build jar file and try to execute and share his observations (solutions) ??
package test;
import java.awt.Toolkit;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.UIManager;
public class TestWindow extends JFrame {
     private JButton jButton1 = new JButton(new JARImage().getImage("Help.png"));
     public TestWindow() {
          this.getContentPane().add(jButton1);
          this.validate();
          this.setVisible(true);
     private class JARImage {
          protected ImageIcon getImage(String imageName) {
               ImageIcon image = new ImageIcon();
               try {
                    image.setImage((Toolkit.getDefaultToolkit().getImage(getClass()
                              .getResource("graph/" + imageName))));
               } catch (Exception ex) {
                    System.out.println("Image Error: " + ex);
                    ex.printStackTrace();
               return image;
     public static void main(String[] args) {
          try {
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          } catch (Exception e) {
               e.printStackTrace();
          new TestWindow();
}

Uncaught error fetching image:
java.lang.NullPointerException
     at sun.awt.image.URLImageSource.getConnection(Unknown Source)
     at sun.awt.image.URLImageSource.getDecoder(Unknown Source)
     at sun.awt.image.InputStreamImageSource.doFetch(Unknown Source)
     at sun.awt.image.ImageFetcher.fetchloop(Unknown Source)
     at sun.awt.image.ImageFetcher.run(Unknown Source)

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

Problem with images in .jar file

Hi all!
I've got a severe problem when deploying an application via web start:
the images withhin a deployed .jar file are not found.
So far I've tried a number of things to get the images back, none of which are working.
I've found different threads concerning this topic, e.g.:
http://forum.java.sun.com/thread.jspa?threadID=396363
http://forum.java.sun.com/thread.jspa?threadID=465795&messageID=2141351
but sadly, they didn't help me out.
Here is my code I'm using:
private ImageIcon loadIconFromClassLoader(String tszRelPath)
    ImageIcon tIcon = null;
    cCat.info("tszRelPath = "+ tszRelPath);
    // this line simply leads to a crash of the whole application
    //tszRelPath = tszRelPath.replaceAll("\\", "/");
    if(!tszRelPath.startsWith("/"))
      tszRelPath = "/" + tszRelPath;
    cCat.info("modified tszRelPath = " + tszRelPath);
    URL tURL = ClassLoader.getSystemResource(tszRelPath);
    if(tURL == null)
      // this too crashes my application
      //tURL = PlainResourceProvider.class.getResource(tszRelPath);
    if(tURL != null)
      tIcon = new ImageIcon(tURL);
    return tIcon;
}I've also tried
PlainResourceProvider.class.getClassLoader().getResource()PlainResourceProvider is part of the .jar that involves the images.
Of course all the .class files in the .jar file are easily accesible
I would be so thankful, if just anyone could help me to solve this problem.
I am going crazy.
Thanks in advance, Christoph

You should take care of the directory structure according to the package structure.
I for example have this jar:
C:\source\java\ebank2_util\smsunlock>unzip -l pro-ebank_sms_unlock.jar
Archive: pro-ebank_sms_unlock.jar
Length    Date    Time    Name
      0 10-28-05 17:27   hu/
      0 10-28-05 17:27   hu/khb/
      0 10-28-05 18:17   hu/khb/smsunlock/
    256 11-07-05 16:33   hu/khb/smsunlock/DButils$MySQLException.class
   4229 11-07-05 16:33   hu/khb/smsunlock/DButils.class
   1700 11-07-05 16:33   hu/khb/smsunlock/GUI$1.class
   2318 11-07-05 16:33   hu/khb/smsunlock/GUI$2.class
    988 11-07-05 16:33   hu/khb/smsunlock/GUI$3.class
   1402 11-07-05 16:33   hu/khb/smsunlock/GUI$mywl.class
   5630 11-07-05 16:33   hu/khb/smsunlock/GUI.class
    818 11-07-05 16:33   hu/khb/smsunlock/LimitedLength_TextField.class
   2452 11-07-05 16:33   hu/khb/smsunlock/Main.class
    900 11-07-05 16:33   hu/khb/smsunlock/MyInputStream.class
      0 11-07-05 16:33   META-INF/
     98 10-27-05 15:53   META-INF/manifest.mf
     90 11-07-05 16:33   hu/khb/smsunlock/properties
20881                    16 filesAnd the resource is loaded like this from hu.khb.smsu.Main:
InputStream is = new MyInputStream( Main.class.getResourceAsStream( "properties" ) );

Classes+resources in JAR: have to add each single Jar file to CLASSPATH?

Hello,
For my application, I plan to easily embed plugins that can be added by the user by copying it into a subfolder "plugins".
Now, I start my app from a shellscript and in order to load resources from within some of these Jars (e.g. using Class.getResourceAsStream() ), it only works if I explicitly add the specific Jar filename to the classpath from the shellscript.
I read in a German Java book, that also just using folder names is enough, but it does not work for me:
Works:
$JAVA_HOME/bin/java -Djava.library.path="./lib" -classpath "./lib:./plugins/test.jar" test.AppFails:
$JAVA_HOME/bin/java -Djava.library.path="./lib" -classpath "./lib:./plugins/" test.AppIs it really required to add Jars explicitly, so that e.g. my shellscript has to make a Jar listing of that folder in order to pass them as classpath files?
Thanks and regards,
Timo

No, you don't have to do it that way. What you need
to do is to have your progam create a URLClassLoader
pointing to all the jars in the plugin directory.
Then request your plugin classes from that, rather
than Class.forName();
You need to create an array of file URLs for the
jars, use File.listFiles() and then File.toURL() on
each ..jar you find.
p.s. If you do it this way make sure your plugin
classes are not on the classpath.
Hmm. Cool. I had no idea. Thanks for correcting me.

Images in .jar file , "NullPointerException"

Hi,
How do I show images which are present in .jar file.
e.g
Toolkit tKit = Toolkit.getDefaultToolkit();
URL logo = MyTool.class.getResource("images/icon.gif");
Image g1=tKit.getImage(logo);
this.setIconImage(globalleafs1);
this works both in c:\java MyTool
and while created in a .jar file
But when I use it for ImageIcon in a button, I get "NullPointerException" while working in a .jar file.
Here are the methods that I have tried to get it worked
1.
new2 = new JButton(new ImageIcon(ClassLoader.getResource("images/new.gif")));
2.
URL newim = MyTool.class.getResource("images/new.gif");
new2 = new JButton(new ImageIcon(newim));
But it too dont work. Please help me.

This came up recently -it was solved with MedaiTracker()
Check back a few pages

Finding image in jar file

This took me by surprise:
I assumed that JVM would find image files, e.g. used in (JFrame).setIconImage(img) when these images are inside a jar file with the same path. I am using something like:
Image   icon=jframe.getToolkit().getImage(img_path);what works when running JVM with class files and images in directories, but not when in jar file. img_path is relative. Classes will be found as expected, but not the image files!
Do I do something wrong?
Thomas
Edited by: ThomasH_usually on Oct 1, 2008 11:48 AM

I encountered this same problem before, whereby I wanted to be able to run my code from within an IDE (find image files from the file system) for development, and also to be able to run my code from within an executable jar (find image files from inside the jar) for release. I used the following utility method to get an image URL:
public static URL getImageUrl(String fileName)
    // try to get the URL as a system resource
    URL url = ClassLoader.getSystemResource(fileName);
    if (url == null)
        // try to get the URL directly from the filename
        try
            url = new URL("file:" + fileName);
        catch (Exception e)
    return url;
}You can then use the resulting URL instead of the image path, in your case as follows:
Image   icon=jframe.getToolkit().getImage(Utils.getImageUrl(img_path));Paul.

Do I need to add to add a new jar file to the WLS ?

I am new to java development and would like to know if I were to use a new jar
file developed by another party in my EJB development, do I need to have this
jar file available in WLS when I deploy the EJB to it ?
I think this is not required but just need a confirmation.
Thanks

Hi,
I take this to mean you are using java classes from the 3rd party jar in your
EJB bean class. If that is the case, then you need the jar file in your classpath
when you compile the EJB classes.
Also, you will need the jar file to be in the classpath when the EJB is used.
You can do this in a variety of ways. If the 3rd party jar is going to change
infrequently, then you can put it in the system CLASSPATH in your startWebLogic
script. Or you can add all the classes of the jar file in the root level of the
EJB (Yuck!!).
Perhaps the best answer is to create an enterprise application (EAR). Then you
place the jar file in the root level of the EAR. In the META-INF\MANIFEST.MF
file of the EJB place
Class-Path: filename.jar
Then when you build the .ear file use:
jar -cvfm ..\commuterLog.jar META-INF\MANIFEST.MF *
hope this helps,
pat
"John" <[email protected]> wrote:
>
I am new to java development and would like to know if I were to use
a new jar
file developed by another party in my EJB development, do I need to have
this
jar file available in WLS when I deploy the EJB to it ?
I think this is not required but just need a confirmation.
Thanks

Add images in jar file

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