Jar file referring to classes in another jar file

I want to deploy my application as a WAR file. Let's say deploying it as an EAR is not an option. I have utility1.jar in WEB-INF/lib that needs classes in other utility2.jar (which is also in WEB-INF/lib) at runtime. Do I need to classpath entry in utility1.jar manifest pointing to utility2.jar? Your help is appreciated.

When a *".war"* is loaded by the server as that application_name* , it unloads the .jar files into "classes" directory with accordence the structure of the folders/package-hierarchy implicitly.

Similar Messages

ANT: Include classes from another jar

Hi all.
Can I add classes from another jar to be added into my jar-file?
Other words, may I write something like this:
<target name="jar" depends="compile">
<jar destfile="deploy/my.jar"
basedir="${compile.dir}"
includes="another.jar" >
</jar>
</target>
in my build.xml?
Thanx a lot for Your tips.
Regards, Volodymyr Shram.

I've found some resolve:
<target name="jar" depends="compile">
<unjar src="another.jar" dest="another_dir"/>
<jar jarfile="deploy/my.jar">
<fileset dir="${compile.outdir}" includes="**" />
<fileset dir="another_dir" includes="**" />
</jar>
</target>
But is it only way? Can I add classes from another.jar to my.jar without extracting?
Regards, Volodymyr Shram.

Loading classes from another jar file

I've set up my jnpl file so that it references a core jar file (contains main() function). The jnlp also references another jar file (app.jar) which contains class files that I load and instantiate dynamically (using ClassLoader). The core.jar file contains a manifest that includes a reference to app.jar.
The app works fine when I use "java -jar core.jar" from the command line.
However, when I wrap the jars using jnlp, I always get a null pointer exception because it cannot find any class that is in the app.jar file. I've tried different strategies, such as trying to load a class file that sits on the server (in a jar file and not in a jar file), but that also fails if I use jnlp (However, it works if I use "java -jar core.jar")
Any ideas what is going on?

This is the "OckCore.jar" manifest before signing:
Manifest-Version: 1.0
Main-Class: com.Ock.OckCore.OckApp
Class-Path: . OckMaths.jar
Created-By: 1.4.0-beta3 (Sun Microsystems Inc.)
Name: com.Ock.OckCore.OckApp.class
Java-Bean: FalseThis is the manifest after signing:
Manifest-Version: 1.0
Main-Class: com.Ock.OckCore.OckApp
Created-By: 1.4.0-beta3 (Sun Microsystems Inc.)
Class-Path: http://hazel/Ock/. http://hazel/Ock/OckMaths.jar
Name: com/Ock/OckCore/OckApp.class
SHA1-Digest: KRZmOryizx9o2L61nN+DbUYCgwo=I have removed a load of irrelevant stuff from the "after" manifest to keep it readable.
note that :-
The OckApp.class loads normally from webstart and tries to load a class from OckMaths.jar.
I can prove that OckApp.class does load because it creates a log file when it does.
The OckApp.class tries to load a class from the OckMaths.jar. This fails if webstart is used but works if OckCore is launched using "java -jar OckCore.jar".
The jars do exist at the location specified by the manifest.
The application launches normally if I use "java -Jar OckCore.jar"
Here is the jnlp file
<?xml version='1.0' encoding='UTF-8'?>
<jnlp
     spec="1.0"
     codebase="http://hazel/Ock"
     href="OckMaths.jnlp">
     <information>
          <title>Ock Maths Demo</title>
          <vendor>Rodentware Inc</vendor>
          <description>Demo of a ported app running as a Java Webstart application</description>
          <description kind="short">An app running as a Java Webstart application"></description>
          <offline-allowed/>
     </information>
     <security>
          <all-permissions/>
     </security>
     <resources>
          <j2se version="1.3"/>
          <jar href="OckCore.jar"/>
          <jar href="OckMaths.jar"/>
     </resources>
     <application-desc main-class="com.Ock.OckCore.OckApp">
</jnlp> I have also signed the jars outside of a webdirectory. I get the following manifest file:
Manifest-Version: 1.0
Main-Class: com.Ock.OckCore.OckApp
Created-By: 1.4.0-beta3 (Sun Microsystems Inc.)
Class-Path: . OckMaths.jar
Name: com/Ock/OckCore/OckApp.class
SHA1-Digest: KRZmOryizx9o2L61nN+DbUYCgwo=
note that :-
The jars do exist at the location specified by the manifest.
The application launches normally if I use "java -Jar OckCore.jar".
The application doesn't launch from webstart.
I've found that cache, but the jar files have been renamed.
OckCore.jar is anOckCore.jar, etc... so I'm not sure if trying to write a cmdline will work anyway.

Using classes from another jar?

Hello,
Could anybody show me an example for how to put a shared library of classes in one jar file, and put an applet in another jar while the applet can use classes in the first jar file? Is this even possible at all???
Thanks!

norsez, did you had a look at the Java Tutorial:
Using the APPLET Tag
http://java.sun.com/docs/books/tutorial/applet/appletsonly/html.html
It says: 'You specify JAR files using the ARCHIVE attribute of the <APPLET> tag. You can specify multiple archive files by separating them with commas [...]'. I assume all listed JAR files are in the classpath then and you should have access to their classes.
Let us know if it works!
HTH, Markus

Applet inside a JAR: Cannot access other classes within the JAR

Hello,
Description
Web app + applet (packaged in a JAR)
I have followed this tutorial
JAR contents
package mypackage
SimpleApplet.class
SimpleObj.class
_"SimpleApplet" uses "SimpleObj"_
package mypackage;
public class SimpleApplet extends JApplet {
    @Override
    public void init() {
        SimpleObj obj = new SimpleObj();
HTML code
<applet archive="SimpleApplet.jar" codebase="." code="mypackage.SimpleApplet.class" width="800" height="600" />
SimpleObj cannot be found (Java Console)
java.lang.NoClassDefFoundError: mypackage/SimpleObj
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: mypackage.SimpleObj
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 8 more
Caused by: java.io.IOException: open HTTP connection failed:*http://localhost:8080/SimpleApp/mypackage/SimpleObj.class*
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 12 more
Exception: java.lang.NoClassDefFoundError: mypackage/SimpleObj
It looks like JRE does not search for the SimpleObj class inside the JAR, but tries to get it from the server...
Any ideas?
Thanks in advance,
Gerard
Edited by: gsoldevila on Dec 10, 2008 2:05 AM

misread, deleted
Edited by: atmguy on Dec 10, 2008 1:12 PM

Multiple HTML-files in one stack / link another HTML-file in a stack

Hi,
I want to integrate a webapp (html/js) into a stack of a dps-folio. All the HTML works fine ... all no problem, but at clicking the first link on the initial HTML-document the next (local) HTML-File is opened in a slider with a "ready"/"Fertig"-bar at the top. But I want, that all html files are seamlessly loaded in the same view.
At this point i found: http://help.adobe.com/en_US/digitalpubsuite/using/WS67cb9e293e2f1f60-8ad81e812b10bfd837-80 00.html and i made the file "NativeOverlays.config" and moved it to the described location. After that, the behaviour was correct in the desktop-preview-app of the DPS, but it still fails on the iPad-Adobe-Viewer.
How can i link between HTML-files without any interuption or sliding?
Thank you!
Christian

Hi Tim,
Thanks for replying. I have looked for "PDFBookBinder class" in xml publisher user guide for ver 5.6.2. I didn't get any reference of this text. Can you please guide me to a tutorial/link where i can get more information about this class.
Also, i originally thought of similar to your second logic, as my design basis. Oracle process generates the xml file in output directory which i can get. What i didn't get is how do i "pick them up and merge" using publisher. Also, is there way to do this merging process using pl/sql ? Can you please give little more information on your second approach.
My original plan of action is that i will create a report set in which i will call oracle seeded report for all 7 payrolls in a sequential manner. Then using the child requests of the report set i will get to 7 xml files generated by seeded oracle process. Then the piece i am not sure of , i will use those 7 files to generate a single xml file having payroll name as tree top for each output. Once single xml is ready, i can easily design a template and register the process to generate output as Excel.This process will not require me to actually change any data or do any calculation. It will only reformatting the feilds we see and abiity to see all 7 payroll at one time rather then entering these numbers manually into an excel to do analysis.
Please provide your feedback, if you think above plan is not feasible or need corrections.
Best Regards,
Ankur

Using XML for Live Data- How do you get the XML file to pull data from another xls file?

Post Author: joseph_atkinson
CA Forum: Xcelsius and Live Office
I was wondering you can help me.
I am currently receiving an *.xls reports on a daily basis (same report, same format, different data). I have put this report into Crystal Xcelcius Designer 4.5 Professional version and created the dashboard I want.
I am aware of the xml mapping functionality where I can map from the *.swf straight to a database. However, is it possible to map to an xls file that will change on a daily basis? (obviously I can you the refresh button in Designer, but I need to automate this process).
Your help really would be appreciated.
Joe

In Firefox, I'm seeing a bad icon for your zip files. I can
download it,
but it looks like something might be amiss with your zip
files
themselves.
Al Sparber - PVII
http://www.projectseven.com
Popup Menus | Image Galleries | CSS Tutorials & Templates
Newsgroup: news://forums.projectseven.com/pviiwebdev/
CSS Newsgroup: news://forums.projectseven.com/css/
DW Newsgroup: news://forums.projectseven.com/dreamweaver/
"Conjurer" <[email protected]> wrote in message
news:e8upg1$kee$[email protected]..
> Conjurer wrote:
>> Boy - I thought this was as simple as creating an
<a> tag link to the
>> file like you do with Word docs and Excel xls files.
So I wrote my
>> link as follows:
>>
>> <li><a
href="OMGMASalSvy/Survey.zip">2006 Adminsistrators
>> Survey.zip</a></li>
>>
>> But when I click on it I get a big nothing!
>>
>> I put the files out there on the host and the
Word/Excel links all
>> work great.
>>
>> Is there some secret magic to this one?
>>
>> My page links are at:
http://www.omgma.com/surveyforms.htm#Documents
>>
>> Thanks for any help.
>
>
> I guess it is working in IE but not in Firefox.... hmmm

Accessing classes in external jar files

I have a jar file called main. I want it to be able to acces the classes in another jar file say test.jar how do i do this.
Thank you

ok, if i have this right...
you have 2 directories that hold 2 .jars, right?
plugins/ -------- build/plugins .jar
systemModuals/ ------- DiaryUI and Loader .jar
Your main JAR is diary?
Diary.jar
you want Diary to run with the jars inside plugins and systemmoduals?
you set the "class-path:" tag like this....
write this manifest file. save it as Manifest.txt and put it in your home dir.
Main-Class: YourMainClass
Class-Path: Diary.jar plugins/this.jar systemmoduals/diaryui.jar
<make sure to hit enter, go to the next line>
command line to your parent directory.
jar cmf Manifest.txt Diary.jar build/main/*.class
you should be set to go.
use
jar xf META-INF/MANIFEST.MF
to read the present manifest that netbeans has created
if necessary

Weird classpath issue in EAR.Some classes can access jars that others cant!

Hi,
I'm experiencing a very frustrating problem that's proving to be a bit of a show stopper for me. I would really appreciate some help...
I have an EAR deployed successfully on Sun Appserver 8 which passes the tests from the sun EAR verifier tool. The ear contains a jar file that I built which has a stateless session bean, home, remote interfaces and rmi stubs, deployment descriptors, as well as some utility classes. The EAR also contains some third-party jars such as Hibernate, Log4-j, apache-commons etc etc. The jar I built has in it's manifest file, the classpath information to reference the other jars in the ear.
The problem I am having is that one of the classes in a third-party jar (hibernate3.jar) cannot see a class in another of the third party jars (log4j-1.2.8.jar) and as a result is throwing a NoClassDefFoundError for org/apache/log4j/Layout while trying to initialise - the two jars are at the root of the EAR.
Furthermore, my utility classes can access and use Log4j classes without any problem and logging command from those classes is output successfully to the server console. However, my session bean, which is packaged in the same jar as the utility classes, fails to log anything even though it uses exactly the same logger and log configuration as the utility classses.
I have tried adding classpath information to the manifest of the EAR so that the third-party jars can pick it up but this makes no difference. Also, according to the EAR verifier tool, you are not allowed to put any classpath information in the EAR manifest.
I have also tried deploying this in weblogic but am experiencing the same problem.
If anyone can offer any advice or solutions I would greatly appreciate it.
:)

whatÂ´s type error have you?
perhaps external libraries (located in classpath) invoke opsCommon.jar and config-3.0.jar classes. then, classnotfound is normal.
and... why separate external libraries (opsCommon.jar and config-3.0.jar inside ear, and other in classpath)?

Load Jar and access a class in jar at run time

I need help from you.
How to load a Jar and access a class in the jar at run time?
When i try the following code it works fine while running in Java (Jdk1.5).If iam running the same code in servlet,ClassCastException occurs.
Error Message : ClassCastExcption : jartest1 cannot be cast to Thing
test.jar contains jartest.class and Thing.class
jartest1.java
try{
File file =new File("test.jar");
String lcStr ="jartest";
URL jfile = new URL("jar", "", "file:" + file.getAbsolutePath() +"!/");
URLClassLoader cl = URLClassLoader.newInstance(new URL[] { jfile });
Class loadedClass = cl.loadClass(lcStr);
Thing t=(Thing)loadedClass.newInstance();
t.execute();
catch(Exception e)
System.err.println(e);
Thing.java
public interface Thing
void execute();
jartest.java
public class jartest implements Thing
public void exceute()
System.out.println("Welcome");
Thanks and Regards
V.Senthil Kumar
Edited by: senthilv_sun on Dec 16, 2008 8:30 PM

senthilv_sun wrote:
I need help from you.
How to load a Jar and access a class in the jar at run time?
When i try the following code it works fine while running in Java (Jdk1.5).If iam running the same code in servlet,ClassCastException occurs.
Error Message : ClassCastExcption : jartest1 cannot be cast to ThingPresumably we can only hope that that is a transciption error. It always helps to use copy and past actual errors and code rather than manually typing them.
test.jar contains jartest.class and Thing.classWrong.
The interface class and plugable class must not be in the same jar.
A plugable interface requires two components
- Interface (generic sense)
- Functional components.
The Interface must be independant (own jar) so that it is available to the framework (user of plugin) and to the functional components. And the plugable component must not be on the java class path.
This also means that we know for certain that the plugable component is also on the system class path. That is a bad idea as well.
Given that it is pretty pointless to even speculate as to why this error is showing up. Create the correct jar layout. Test using the command line. Then test using servlets. Insure that the plugable jar is NOT on the java classpath for both tests.

Classes in added jar on classpath not found

Hi there,
The javafx compiler seems to have trouble finding classes from a jar that was added to the lib directory of a javafx project. I experience this trouble when working with the Netbeans 6.5.1 IDE and javafx version 1.2.
When trying to import a single class in a javafx file from a manually added jar, a compiler error occurs stating that the class cannot be found. Package names, however, do get recognized when importing classes, and therefore star import are possible. The actual classes from a package that was imported by means of a star import, don't get recognized.
Does anyone have an idea what causes this problem and how to resolve it?
Kind regards and thanks in advance,
Rienk

Can I refer classes in embedded jar's? I thought that did not work. It wasn't working so I tried putting the same jars into the same directory as the main class.
Let me try again with less information.
My jar with the main class is: testpojo.jar
The class path inside the manifest is
Class-Path: swing-layout-1.0.03.jar AbsoluteLayout.jar
The directory with the external jar is:
Directory of C:\DOCUME~1\MDARR\WORKSP~1\TESTPO~1\TARGET
9/11/2008 10:44 PM <DIR> .
9/11/2008 10:44 PM <DIR> ..
9/11/2008 10:44 PM 2,850 AbsoluteLayout.jar
9/11/2008 10:44 PM 118,103 swing-layout-1.0.3.jar
9/11/2008 10:56 PM 51,660 testpojo.jar
Unless I've missed something the the swing-layout-1.0.3.jar jar file is in the same relative directory as testpojo.jar.
When I execute the main class should be able to reference classes in that file.
But it gets,
Exception in thread "main" java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group
What's happening? It's a little confusing because the same jar is also stored inside testpojo.jar. I read that Java can't load from embedded jar's so I tried putting them in the same directory as testpojo.jar and setting the class path inside the manifest.
And yes, I understand about the main class name. That was just me goofing around trying to label things. At this I'm a rookie.
Tia,
Maurice

How to use Class-Path in Manifest file

hi,
I want to add jar files in another executable jar file but the Class-Path in Manifest file is not set correctly,please give an example for setting a Class-Path attribute in Manifest class.
regards,
selvaraj

You looked into the Jar section of the Sun tutorial did you?

How to run a jar file which needs another jar to be in the class path

Hi,
I need to execute a jar, which needs another jar to be in the classpath.
If I run like
java -classpath <jar1 name> -jar <main jar>
It is giving classnotfoundexception, where as the class is available in the <jar1 name>.
so, currently I am doing like this
In the manifest file i have given like
Main-Class: <class name>
Class-Path: <jar name> <jar name2>
then it is running fine. But, if I want to change the jar location again I need to changed the manifest file.
Is there any way to do this? Pls help me.

How about
java -cp jar1.jar;jar2.jar com.acme.MainClass
You won't need to worry about the manifest file after that and you can make a bat files (or .sh file in *nix) for it.

Java class uses another class in a Jar file (How do I make Java see it)?

I am trying to figure out how do I make Javac see the thinlet.class in the thinlet.jar.
I have developed an XUL xml interface and a java program that calls the interface shown below:
//package thinlet.demo;
import thinlet.*;
public class UI extends Thinlet
{ public UI () throws Exception {add(parse("UI.xml"));}
public static void main(String[] args) throws Exception
{ new FrameLauncher("UI", new UI(), 600, 600); }}
when I do the normal compile, I get an error:
UI.java:4: cannot find symbol
symbol: class Thinlet
public class UI extends Thinlet {
^
UI.java:7: cannot find symbol
symbol : method parse(java.lang.String)
location: class thinlet.demo.UI
add(parse("UI.xml"));
^
UI.java:12: cannot find symbol
symbol : class FrameLauncher
location: class thinlet.demo.UI
new FrameLauncher("UI", new UI(), 600, 600);
^
3 errors
This thinlet class should be in the thinlet.jar that I have added the directory to the path, the directory and jarfile name to the System CLASSPATH and it couldn't see it. So finally I tried putting the thinlet.jar in the same directory to no avail. I've searched the web for some time an cannot find anything that specifically speaks to compiling a program that has parent classes in a Jar.
Any help is definitely appreciated.

This thinlet class should be in the thinlet.jar that I have added the directory to the path, the directory and jarfile name to the System CLASSPATH and it couldn't see it. So finally I tried putting the thinlet.jar in the same directory to no avail. I've searched the web for some time an cannot find anything that specifically speaks to compiling a program that has parent classes in a Jar.
Any help is definitely appreciated.You just still haven't provided the jar in the classpath, or you're not using the right class name. Is the class really named thinlet.Thinlet? Or are you thinking "import thinlet.*" means to import all classes in a jar named thinlet.jar? Because the latter is not true. You need to import classes, not jar file names.

ANT - Jar File include another Jar file and importing classes

Here is the directory structure i have set up:
FTPGetter
\src
    \com
      \abc
        \ftpgetter
          - GUI.java
          - FTPGetter.java
          - Login.java
\classes
\include
    - ftpClient.jar
    - info.xml
\jar
    - FTPGetter.jarThe code compiles file and can create a Jar file without errors. But when I execute the Jar file, I get
java.lang.NoClassDefFoundError: com/abc/ftpclient/FTPwhich is a class that I import from the ftpClient.jar file in FTPGetter.java
What gives?
Here is my necessary build.xml code:
<?xml version="1.0"?>
<project name="FTPGetter" default="all">
<property name="src.dir"        value="src"/>
<property name="package.name"   value="com.abc.ftpgetter"/>
<property name="package.dir"    value="${src.dir}/com/abc/ftpgetter"/>
<property name="classes.dir"    value="classes"/>
<property name="include.dir"    value="include"/>
<property name="jar.dir"        value="jar"/>
<property name="javadoc.dir"    value="docs"/>
<property name="javadoc.title" value="FTPGetter"/>
<property name="javadoc.header" value="FTPGetter - By ABC XYZ [2005]"/>
<property name="run.classname" value="${package.name}.FTPGetter"/>
<target name="init">
    <mkdir dir="${javadoc.dir}" />
    <mkdir dir="${classes.dir}" />
    <mkdir dir="${jar.dir}" />
</target>
<target name="all" depends ="compile,jar" />
<target name="compile" description="Compile Java code" depends="clean, init">
    <javac srcdir="${package.dir}" destdir="${classes.dir}">
      <classpath>
        
        <pathelement path="${classes.dir}" />
        
        <fileset dir="${include.dir}">
          <include name="**/*.jar"/>
        </fileset>
      </classpath>
    </javac>
</target>
<target name="clean" description="Clean up">
    <delete dir="${javadoc.dir}" />
    <delete dir="${classes.dir}" />
    <delete dir="${jar.dir}" />
</target>
<target name="jar" depends="compile">
    <jar jarfile="${jar.dir}/FTPGetter.jar" update="false">
      <fileset dir="${classes.dir}" includes="**/*.class" />

      <fileset dir="${include.dir}" includes="info.xml" />

      <fileset dir="${include.dir}" includes="ftpClient.jar" />
      <manifest>
        <attribute name="Main-Class" value="com.abc.ftpgetter.FTPGetter" />
        <attribute name="Class-Path" value="include/ftpClient.jar"/>
      </manifest>
    </jar>
</target>
</project>

nevermind I got that fixed now:
had to get the build.xml code for the <target name="jar" depends="compile">so that it looks more like:
<target name="jar" depends="compile">
    <jar jarfile="${jar.dir}/FTPGetter.jar">
      <zipfileset dir="classes" prefix="" />
      <zipfileset src="include/ftpClient.jar" />
      <zipfileset dir="${include.dir}" includes="info.xml" />
      <manifest>
        <attribute name="Main-Class" value="com.abc.ftpgetter.FTPGetter" />
      </manifest>
    </jar>
</target>Keyword would need to be zipfileset.

Jar file referring to classes in another jar file

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