Rt.jar in applet tag

Hello,
I'm trying to create an applet that include a few swing classes. From what I have read, the client needs to download the rt.jar file for the applet to access the swing classes. I'm trying to figure out how to include this jar file in the applet tag.
Right now my applet tag looks like: <applet code="JavaPic.class" archive="JavaPic.jar, rt.jar" width="100" height="100"></applet>.
Any help would be greatly appreciated.

Sorry, I think I wasn't very descriptive. The applet is to be used in IE/Netscape. The applet works okay and all the import classes are inserted. If I run the applet in appletviewer, it works fine because the appletviewer has access to the swing class files. IE/Netscape don't have access to those classes so I need to have them download with the applet to provide the browser with the classes.
I have searched around java.sun.com and have found many others who have done this but I cannot locate any actual examples :-(

Similar Messages

applet tag regarding JAR file

Is there something wrong with the following applet declaration?
<applet code = "Sheep2.class" archive="Sheep2.jar" width = 500 height = 300
ALT="If you could run this applet, you'd see a sky, a field, and a moon.">
Your browser is completely ignoring the <APPLET> tag!
</applet>
Works fine (it seems) on my Windows 98 computer with IE 6.0280, but does not work on the same computer when I access the page calling the applet using AOL's v.9 browser.
I used HtmlConverter to convert the above to Extended version (covering all platforms), and still does not work with AOL's browser. HtmlConverter reported no errors, but now IE shows an error icon in its status bar when I access the page even offline.
Other html files I converted using HtmlConverter work fine with AOL's browser. They don't have "archive" attribute.
What could be going wrong? My guess is JAR file reference is causing problems.

I did more Html Conversion today. I ran one file which didn't show any error mark in the status bar of IE through HtmlConverter. I ran the new file generated by HtmlConverter and an error icon appeared in the status bar of IE. My Java Console didn't show any message. So, it must be an error in the applet related info HtmlConverter generated was not 100% html compliant..
BTW, I started speculating the cause of my applets not working on the computer of oen of my friends is simply that her Java Plug-in cannot handle Swing components' J classes.

Applet tag accessing JAR file

hi,
I hope this is not a multi-post, I've searched high and low and I could not find an exact solution to my question...
How can I load an applet in a browser using an applet tag? My main class is com.my.applet.MainClass.class and the its in a JAR. The jar is in ProjectName/WebContent/WEB-INF/lib/MyJar.jar (a Dynamic Web Project).
Thx in advance

i guess there is no solution for this one... i placed it in a resource folder instead... thx everyone...

Can i load a class in subdirectoy inside a jar file using applet tag?

hi every one.. thank you for reading ... i am really in dire need for the solution..
my problem is that i have a jar file contianing a package which inturn contains my applet class...
i am trying to access this applet class using a applet tag in html file. this html file is in same directory as the jar file. i am having no problems in windows but when i am doing this in linux apache server i was getting class not found exception. (already checked the file permissions). and when i am successful when using simple package directory instead of jar file . so gist of my quesition is "can i load a class in subdirectoy inside a jar file using applet tag in a html file"?

When you tested in Windows were you using Internet Explorer? On Linux you will be using a different browser, usually Mozilla of some version, or Firefox. Note that the HTML tags for applets will be different between the browsers if you are using the object tag. Principally the classid value for the object tag will differ between Firefox and Internet Explorer.

Get JSP file to run with an applet tag under JDeveloper

I Created an applet and an html file under JDeveloper. with the applet tag in the html file.
when I run the html file the applet runs perfectly.
I Created a jsp file in the same project with the applet and the html file under JDeveloper. I copied and pasted the applet tag from the html file to the jsp file.
When I try to run the jsp file under JDeveloper I get
java.io.FileNotFoundExceptions for all of the jar files in the Applet tag ARCHIVE and for the applet tag CODE
This is the applet tag that I copied and pasted from the html file to the jsp file
BEGIN:
<APPLET CODE="myapplet.Applet1" ARCHIVE="jdev-rt.jar,ojsp.jar,ojsputil.jar,oc4j.jar,servlet.jar,ojc.jar" HEIGHT="200" WIDTH="200" ALIGN="bottom">This browser does not appear to support Applets.</APPLET>
END:
Here three example of the exceptions that I got BEGIN:
1.
java.io.FileNotFoundException: http://139.169.225.224:8988/JspToAppletWS-JspAppletInstantiation-context-root/jdev-rt.jar
2.
java.io.FileNotFoundException: http://139.169.225.224:8988/JspToAppletWS-JspAppletInstantiation-context-root/jdev-rt.jar
3.
java.lang.ClassNotFoundException: myapplet.Applet1
Here three example of the exceptions that I got END:
This is the html file that works BEGIN:
<HTML>
<HEAD>
<TITLE>
Title
</TITLE>
</HEAD>
<BODY>
<H2>
This is sample HTML text.
</H2>
<BR>
<APPLET CODE="myapplet.Applet1" ARCHIVE="jdev-rt.jar,ojsp.jar,ojsputil.jar,oc4j.jar,servlet.jar,ojc.jar" HEIGHT="200" WIDTH="200" ALIGN="bottom">This browser does not appear to support Applets.</APPLET>
</BODY>
</HTML>
This is the html file that works END:
This is the JSP file that does not work BEGIN:

<%@ page import = "myapplet.Applet1, java.util.Enumeration, java.util.Vector, javax.swing.JFrame, java.lang.*" contentType="text/html;charset=windows-1252"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>
Hello World
</title>
</head>
<body>
<h2>
The current time is:
</h2>
<p>
<%= new java.util.Date() %></p>
<APPLET CODE="myapplet.Applet1" ARCHIVE="jdev-rt.jar,ojsp.jar,ojsputil.jar,oc4j.jar,servlet.jar,ojc.jar" HEIGHT="200" WIDTH="200" ALIGN="bottom">This browser does not appear to support Applets.</APPLET-->
</body>
</html>
This is the JSP file that does not work END:
I would like to know what I need to do so that I can run
the Jsp file under JDeveloper with the applet tag without any exceptions.

Hi,
I meet the same problem and can not get a solution from this forum or other forum in internet, either.
Have you already solved this problem? Can you tell me your solution? thanks in advance.
Regards

Accessing a File within a zip, which was archived using Applet Tag

Hi,
Could Any one please tell me, How to Access a File from within an Applet. The File resides inside a zip which was Archived using <Applet> Tag.
Actually, I want to write an application which runs both online and offline. So I have chosen Applet and All the files Which I need are zipped and is Archived through <Applet ARCHIVE="example.zip">.
Now I want to access those XML files which are inside example.zip from my Applet.
How can I do that?
I think I will get security Exception.
How to get rid of this security Exception.
Kindly Answer soon.......
It's very urgent.
Thanking you,
KumudaRaj

Did you already try signing a jarfile? If no ->>
You can call a class inside a jar-file within the applet.
if this class should be able to acces files the jarfile
first has to be signed. to do this, you must generate a key.
the complete work:
1. write your applet
2. write a html-page with following code:
<APPLET code="guestbook.class" archive="guestbook.jar" width=600 height=400></APPLET>
3. make a zip-file with the guestbook.class, guestbook.form, guestbook$1.class, guestbook$... and rename it to guestbook.jar
4. in the console type:
keytool -genkey -alias YOURNAME
5. sign the key to your jarfile with:
jarsigner guestbook.jar YOURNAME
6. try the applet. a warning should appear which you have to answer
with YES then it should work
my trouble is that i cant acces files anyway because right now i don�t
alreadv have the clue to get the right (absolute?) path for the file. means i get an ioexception because the applet cant find the file :-((
does anyone know how to solve this problem then? my code is:
FileReader Stream = new FileReader("/members/Ui97u8g4f6b89mj90kh5gbr4ecf6KXC4/guestbook.txt");
...

Applet tag

Hi guys i'm having a bit of a problem with an applet.
I have an applet i am trying to run which imports one of my own classes from a different package. When i run this applet i get a NoClassDefFoundError on this imported class. I dont understand what the problem is, the classpath should be fine, i have had no problem using this class before and although i'm not to familiar with html i don't think i need to mention my imported class in the tag since the std java classes import ok.
just wondered if anyone could shed some light on the matter.
I would rather not use a jar file.
cheers
steve

My applet tag looks like:
<APPLET CODE="MyClass.class" WIDTH=300 HEIGHT=300>
<\APPLET>
now the problem i have is that appletviewer, or any of my browsers, cannot find a class 'utilities.MyUtil.class' that i have in a different path, which 'MyClass.class' needs, resulting in a NoClassDefFoundError.
after looking at an applet tutorial i thought that this maybe impossible without a jar file because of the security restrictions of applets.
i would be deeply indebted to you if you tell me this is not the case!

applet tag vs Object tag

As per W3Schools HTML applet tag is not supported in HTML5. Need to use <Object> tag instead of <applet> tag.
For more details follow this link: http://www.w3schools.com/tags/tag_applet.asp
http://dev.w3.org/html5/spec/obsolete.html#the-applet-element
Point 11.2 Non-conforming features
So, I go ahead and the change the code as below depicted.
Below code that is working with <APPLET> tag:
+<Applet+
style    = "position:absolute;border:0px;left:184;top:95;height:180;width:364;"
code     = "jtreeviewapplet.JTreeViewAppletMain.class"
name     = "TreeView"
id       = "TreeView"
hspace   = "0"
vspace   = "0"
align    = "top"
archive = "/Project/HTML/ABC/XYZ.jar,/Project/HTML/ABC/ABC.jar"
MAYSCRIPT>
+<PARAM NAME="onSelected" VALUE="onSelect_Handler">+
+<PARAM NAME="onFinishNormalize" VALUE="onFinishNormalize_Handler">+
+</Applet>+
Here is the snippet, whcih have been changed to <OBJECT> tag so as to support HTML5 in future:
+<OBJECT type=" application/x-java-applet"+
style    = "position:absolute;border:0px;left:184;top:95;height:180;width:364;"
name     = "TreeView"
id       = "TreeView"
hspace   = "0"
vspace   = "0"
align    = "top"
+>+
+<PARAM name="code" value=”jtreeviewapplet.JTreeViewAppletMain.class”>+
+<PARAM name="codebase" value="/Project/HTML/ABC/">+
+<PARAM name="archive" value=" XYZ.jar">+
+<PARAM name="archive" value=" ABC.jar">+
+<PARAM name="scriptable" value="true">+
+<PARAM NAME="onSelected" VALUE="onSelect_Handler">+
+<PARAM NAME="onFinishNormalize" VALUE="onFinishNormalize_Handler">+
+</OBJECT>+
After changing the *<applet>* tag to *<object>* tag , my applet itself is not loading and it gives class not found exception for jtreeviewapplet.JTreeViewAppletMain.class.
(Note: For both working and not working condition, I am using latest JDK 1.7 update 9 for compiling the code and in my system I am having latest JRE1.7 update 9 to run the applet code. I am using InternetExplorer 8 and InternetExplorer 9 browser)
Can anybody help me to find out where I am going wrong?
Edited by: 975931 on Dec 12, 2012 1:24 AM

You might want to stick to the documentation:
http://docs.oracle.com/javase/tutorial/deployment/index.html
and use the deployment toolkit.
PS: use \ tags when posting anything code related. That makes it readable and it keeps the forum from trying to interpret it.

How to make pack200 work with applet tag ?

Hello All,
Sorry for the cross-post.
I tired getting the advise on java.net forum but with no success. Can someone here please help with this or direct me to right direction.
I am trying to use the pack200 compressed jars for my Object/Applet tag, but not sure how to go about using it.
I have followed the instructions for jarsigned pack200 jars.
http://java.sun.com/j2se/1.5.0/docs/guide/deployme.../deployment-guide/pack200.html
But now how do i use them in my Object tag, what should i name the files in my cache_archive parameter :
example:
something like :
<PARAM NAME = CACHE_ARCHIVE VALUE = "final.jar" />
or :
<PARAM NAME = CACHE_ARCHIVE VALUE = "final.jar.pack.gz" />
renaming : final.jar.pack.gz --> final.jar ??
I tried both the above options but none of them works.
network: Wrote URL http://myserver.net/Stream/lib/final.jar to File C:\Documents and Settings\I025204\Application Data\Sun\Java\Deployment\cache\6.0\60\366763c-2a096009-temp
java.util.zip.ZipException: ZIP file must have at least one entry
at java.util.zip.ZipOutputStream.finish(Unknown Source)
at java.util.zip.DeflaterOutputStream.close(Unknown Source)
at java.util.zip.ZipOutputStream.close(Unknown Source)
at com.sun.deploy.net.HttpDownloadHelper.download(Unknown Source)
at com.sun.deploy.cache.Cache$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.cache.Cache.downloadResourceToCache(Unknown Source)
at com.sun.deploy.cache.DeployFileOutputStream.close(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.close(Unknown Source)
at java.io.BufferedInputStream.close(Unknown Source)
at sun.plugin.PluginURLJarFileCallBack.downloadJAR(Unknown Source)
at sun.plugin.PluginURLJarFileCallBack.access$000(Unknown Source)
at sun.plugin.PluginURLJarFileCallBack$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin.PluginURLJarFileCallBack.retrieve(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.retrieve(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.getJarFile(Unknown Source)
Do i need to add something more .
I am only allowed to use the below:as its the corporate policy for now.
Java Plug-in 1.6.0_05
Using JRE version 1.6.0_05 Java HotSpot(TM) Client VM
Can someone please help me how to get the pack200 work in the Object tag ?
Please advise.
Thanks,

InputStream in = sc.getResourceAsStream("application.jar.pack.gz");
        OutputStream out = response.getOutputStream();
        if (in != null) {
            try {
                sendOut(in,out);
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                if (ioe.getMessage().compareTo("Broken pipe") == 0) {
                    sc.log("Broken Pipe while writing");
                    return;
                } else throw ioe;
        } else response.sendError(response.SC_NOT_FOUND);
private void sendOut(InputStream in, OutputStream ostream)
                 throws IOException {
        byte buf[] = new byte[8192];
System.out.println("send jar file");
        int n = in.read(buf);
        while (n > 0 ) {System.out.println(n);
            ostream.write(buf,0,n);
            n = in.read(buf);
        ostream.close();
        in.close();
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u should conifgure the servlet in the web.xml for urlmapping *.jar
<servlet-mapping>
      <servlet-name>jarService</servlet-name>
      <url-pattern>*.jar</url-pattern>
    </servlet-mapping>where jarService is the name of the pack200 sevice servlet ContentType.java
Edited by: kartheepanmirra on Jun 17, 2009 12:17 AM
Edited by: kartheepanmirra on Jun 17, 2009 3:06 AM

Whats wrong with this applet TAG

Hi,
Any ideas why this tag:
<APPLET
codebase="/applet"
archive="JavaLibrary1.jar"
code="org.gregnet.NewJApplet.class"
width=350 height=200>
</APPLET>
results my web server is giving an error indicating it can't find anything at: "/applet/org/gregnet/NewJApplet.class"?? It's kind of like the ARCHIVE parameter it's being recognised? My web server I assume should only see the applet calling into the "http://<<domain>>/applet/JavaLibrary1.jar" address based on my applet tag (i.e. the code parameter should be used to form part of the HTTP request path I assume)
Any ideas?

Try the applet in Appleteer. See if that explains things better.
Edited by: AndrewThompson64 on Feb 27, 2009 2:58 PM

How-to: APPLET-tag for applet in com.foo.bar?

Hi,
I have an applet in the package com.foo.bar and am struggling to get the applet-tag in my HTML right to get the applet loaded.
Can anyone tell me how it should look like?
Furthermore, I am planning to store the applet in a jar (say MyApplet.jar) How would the a HTML look like in that case.
I can assure that the applet runs, because when I remove the package statement in the applet class it all works excellently.
Thanks in advance,
Iwan

when you jar it. be in the directory that the com package folder exists in. then use "jar cvf MyApplet.jar com/foo/bar/*.class"
This will tell the browser what jar file it needs so that it can get the classes.
<param name="archive" value="MyApplet.jar">
This will tell the browswer which class contains the init method in the jar.
<param name="code" value="com.foo.bar.Class">
Class being the name of the class with the init method in it.

Could the applet tag be any more unintuitive?

I've got an html file that's in the same directory as my jar file, WebUpload.jar.
WebUpload.jar has the class WebUploadUI.
The class WebUploadUI is in the package fileTransfer.
So... what's the applet tag to load this?
<applet codebase="." code="fileTransfer/WebUploadUI.class" archive="WebUpload.jar" width=250 height=130>
Doesn't work. I find it hilarious I can write a multithreaded client socket without much trouble but I can't figure this out.

There are examples and explanations here:
http://java.sun.com/docs/books/tutorial/deployment/applet/index.html

ER: HTML Applet tag syntax warning - or HTML syntax checker for JDEV.

Hi,
I just spent ages (an hour or two) debugging an applet and it turned out that I had left a comma "," out of my 'archive=..' parameter of the 'applet' tag in the HTML :-(.
E.g. I had <applet code="x" archive="a.jar b.jar, c.jar, d.jar"> and IE simply didn't load 'b.jar' so I got the usual 'class not found' exception. After signing every jar and putting every jar in every directory I finally noticed the commas between some of the jars.
I can understand IE not helping me load an Applet since, from MS's point of view, that is evil Java code, but JDev must know the syntax of a HTML applet tag too so it could highlight the error for me.
Alternatively does anyone know of a HTML checker plugin for JDEV?
Regards,
Simon.

No comments?
I've been looking around for a HTML syntax checker and there are plenty around - just google "html validation". None so far have picked up the missing comma in my busted applet tag. I guess with a missing comma it just looks like a file name with a space in it anyway.
I still think JDeveloper could flag semantic errors like this at development time.
Cheers,
Simon.

Need immi. help - Multiple JRE running 4 diff applet tag in diff web pages

Hi,
Im facing a weird scenario after installing JRE7, Please help me to resolve the issue.
This is the scenario, in our application we have applets tags added in multiple web pages. for eg . in page 1, I have added an applet tag with some supporting jars,
in page 2, I have added another applet tag with some supporting jars (completely different from the one added in page 1).
similarly in page 3, complete different set of jars added.
I enabled to show Java console in java control panel
When I load page 1, I get a java console popup, loading page 2 shows another java console.
each represents its own applet tag.
Not sure is there any limitation of opening number of jre from one single browser tab._
Because when I load page 3 with different applet tag my browser hangs & other 2 java console also hangs_
But its not the case in Jre 6,
In jre 6 I get only one console_, & when try to dump the list I get all the jars in the same console.
From jre 7 console
console 1
Java Plug-in 10.5.1.255
Using JRE version 1.7.0_05-b05 Java HotSpot(TM) Client VM
Dumping class loader cache...
Live entry: key=http://MYIP:10001/ipc/,Applet1.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Live entry: key=http://MYIP:10001/ipc/,Applet2.jar,commons-logging.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Done.
Console 2
Java Plug-in 10.5.1.255
Using JRE version 1.7.0_05-b05 Java HotSpot(TM) Client VM
Dumping class loader cache...
Live entry: key=http://MYIP:10001/ipc/,Applet3.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Live entry: key=http://MYIP:10001/ipc/,Applet4.jar,pdfbox-1.5.0.jar,fontbox-1.5.0.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Done.
From jre 6 console
console 1
Java Plug-in 1.6.0_33
Using JRE version 1.6.0_33-b03 Java HotSpot(TM) 64-Bit Server VM
Dumping class loader cache...
Live entry: key=http://MYIP:10001/ipc/,Applet4.jar,pdfbox-1.5.0.jar,fontbox-1.5.0.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Live entry: key=http://MYIP:10001/ipc/,Applet1.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Live entry: key=http://MYIP:10001/ipc/,Applet3.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Live entry: key=http://MYIP:10001/ipc/,Applet2.jar,commons-logging.jar, refCount=1, threadGroup=sun.plugin2.applet.Applet2ThreadGroup[name=http://MYIP:10001/ipc/-threadGroup,maxpri=4]
Done.
Havent tried to write an sample program for this scenario yet, the application is our existing corporate application.
I just tried to test it with jre 7. but facing this issue now.
additional info
OS win7 64 bit
browser IE 9 32bit jre 1.7 32 bit
IE 9 64bit jre 1.6 64 bit
Anyone faced this issue & resolved, Please help how to resolve this issue.
If you need additional info also I get it for analysis, please help.
Thanks in Advance
JP

What's 'immi.'?
If it's what I think it is, it is pointless if not counterproductive to disclose your time management problems here. They are your own to deal with, not anybody else's.
However I have Web pages with three applets on them, and they all work OK in both Java 6 and 7.

Using a Jar file into my jar project (Applet)

Hy,
I would like to know how I have to do to put a jar library in my jar file (containing my classes) ?
I use only 2 classes of that particular jar library (Regex.class & RegRes.class), and when I only put the jar file (patbinfree153.jar), the applet stops when its reaches the first line where i use this class.
this line :
Regex Mon_Regex = new Regex("(([<][iI][mM][gG][^>]+)[sS][rR][cC][=][\"]{0,1}([^\"> ]*))");However, it works when I launch the applet in AppletViewer, but doesn't work anymore when I create a jar file, and open it through my web browser. (I signed already my jar file, and it works until it reaches this line). That it to say that the jvm can find the 2 external classes when I run the program trough Eclipse, but can't find them when I create my package .jar. (I hope I am clear)
Do I need to extract the folders of this jar file ? Because I dont think the import works with those two classes. Or can I just put those 2 classes like my own classes, in this case, what to write for the import line ?
the import I do :
import com.stevesoft.pat.*;Thanks ^^

I think I found a beginnig of solution, but I still have trouble.
In the tutorial you gave me, it is said to add the following line in the manifest file to use jar in jar :
Class-Path: JAR-FILE.jar(here is the source : http://java.sun.com/docs/books/tutorial/deployment/jar/downman.html)
I did it, it works fine locally, but when i put my html, jar, files on my web site, my applet seams not to find the other jar file again.
Locally, the architecure is the following :
\upload4.html
\upload4.jar (its manifest have the class-path line linking with patbinfree153.jar)
\patbinfree153.jar (contains 2 classes I need)I uploaded the same architecture on my web site, but it doesn't work. The applet stops when it reaches the 1st line where I need one of the patbinfree153 classes.
Any idea ? :-)

Rt.jar in applet tag

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