One Jar distribution

It somewhat confusing me that distributing a number of jars as one is still not something that is supported well. As many others do, I use the approach of unpacking all related jars and then repackaging the whole. This works fine for most jars, but mail.jar, preweaved EclipseLink business models jars, imageio_1.1.jar won't all that; they need to be included in the classpath. This is starting to annoy me, as more and more jars fall into this category.
Basically all I look for is a very simple approach:
1. pack all jars are pack into one single jar and some startup information is added (VM arguments like "javaagent").
2. when started, the jar is unpacked in a temporar location
3. the classpath and system path is set based on what was unpacked, and the main jar is called as if it were a normal java start (with the provided VM arguments).
Now I found OneJar, JarClassloader and a number of other approaches, some creating an EXE out of the JAR, but all seem very complex for the task at hand (custom classloaders and stuff).
I'll give some of these a spin, but does anyone have any experience with such tools, especially concerning arguments like "javaagent"?
Otherwise I have to implement my own distributor.

You are right and naturally restructuring the build process is required in order to create a single-jar deliverable. But only the packaging phase.
Do keep in mind that this is an 8 year old Swing application started on Java 1.2. Initially it only had a relation with some free and open source util and component jars. The quickest way to create a deliverable back then was repacking. During the years more jars were added, but the approach held. The troubles began with the mail and activation jars... They have data in the META-INF that do no allow repacking, so they are made available separately (copied). This worked ok, since they hardly ever change. But more recently I started to move the core of the application into separate business model jar using Eclipselink (it was about time that JDBC code was upgraded, especially since the duplication of JDBC logic is also increasing with the various ex- and importer applications) and the number of these "exception" jars is getting higher.
So the pivot point is reached to restructure the deliverable back into one single jar.

Similar Messages

How do I link the javadoc for one jar to another?

I'm starting to work on the javadocs for my project. It consists of three JAR files. The problem is I haven't figured out is how to link the javadoc for one JAR to that for another jar. So if JAR A declares class X and JAR B has class Y extend class X, they need to be linked. But the javadoc output only has plain text there. What am I doing wrong? Something like @see com.u3e.tests.tools.X is output as text, not a link. I have the same problem for any @see pointing to part of the JDK. @see java.lang.Object is text.
My project is NetBeans IDE based. Do I need to manually specify something on the command line? I see the -sourcepath and -classpath command line options, but don't know if those would help or not. Ideally, there would be a place directly in the Documentation portion of the properties for each JAR to list that, but I don't see it. The various JARs are listed under the libraries section as needed to satisfy dependencies.

The best way IMO is to sync each iPad with your computer. Having all your stuff backed up on a computer is a good idea anyway. Just read how many folks here are trying to recover lost stuff that could easily be copied back from either backup or iTunes on the computer.
Sync both iPads to the computer. Transfer all photos to the same computer. Then sync again selecting which items you want on each iPad.

How to package other jar files into one jar?

How to package other jar files into one jar? How can i get the class in the inner jar file?

Generally not a good idea. The Java runtime won't be able to load classes from those "inner" jars, you'd have to write your own classloader to do that. It's not a brilliant idea, generally, anyway, since the point of having lots of jars is to keep your application modular. Bundling them all together like that means you have to re-deploy the whole thing to fix, for instance, one small bug in one small library
If you really want to do this, there's an Eclipse plugin called FatJar, but I urge you to consider whether you really want to do it first.

How to Include more than one jar files

My application uses more than one jar files. And all the jar files i am using are signed. when i include the jar files, i am including them in the resources section of the ".jnlp" file . The section of code looks like this:
<resources>
<jar href="utestfw.jar" main="true" download="eager"/>
<jar href="crimson.jar"/>
<jar href="jaxp.jar"/>
</resources>
<application-desc main-class="utestfw.ObjectBrowser"/>
The deployment of the application is successful. The jar file - "utestfw.jar" contains the application main class when the application is launched it works, but when i choose the feature which involves the classes of either "crimson.jar" or "jaxp.jar" , the application terminates and the webstart console and the application is closed automatically. Am i wrong in adding the jar files? what is the way to add more than one jar files to the ".jnlp" file.
Can anyone please help me?
-Aparna

I'll post u the jnlp file which i am using. To sign all the jars i've used the same alias ( a self signed certificate using keytool and jarsigner).Here is the jnlp file:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="0.2 1.0"
codebase="http://127.0.0.1:8080/healthdec"
href="testTool.jnlp">
<information>
<title>Unit Test Manager </title>
<vendor>Sun Microsystems, Inc.</vendor>
<description>A minimalist drawing application along the lines of Illustrator</description>
<icon href="images/testing.gif"/>
<offline-allowed/>
</information>
<resources>
<j2se version="1.3+ 1.2+"/>
<jar href="utestfw.jar" main="true" download="eager"/>
<jar href="crimson.jar" main="false" download="eager"/>
<jar href="jaxp.jar" main="false" download="eager"/>
</resources>
<application-desc main-class="utestfw.ObjectBrowser"/>
<security>
<all-permissions/>
</security>
</jnlp>
Can u please look at the above code and suggest me where i am wrong. Thanks.
-Regards
Aparna

Creating one jar archive out of several jar archives

I have a problem with jar files. What i am trying to do is:
Build one jar archive out of several jar archives. But i always get a ZipException. I opened a JarOutputStream and tried to write JarEntry objects to the stream by using the putNextEntry() method.
here my code:
// finalJar is the file to with i want to write
// final Manifest is the manifest for that jar archive
try {
fout = new FileOutputStream (finalJar);
jout = new JarOutputStream(fout,finalManifest);
} catch (IOException io) { // log }
// curJar ... is the current jar archive as JarFile Object
Enumeration entries = curJar.entries();
while (entries.hasMoreElements()) {
JarEntry curEntry = (JarEntry) entries.nextElement();
try {
jout.putNextEntry(curEntry);
} catch (ZipException ze) { // log}
I get this error: (for every entry the same error !)
java.util.zip.ZipException: invalid entry size (expected 6010 but got 0 bytes)
at java.util.zip.ZipOutputStream.closeEntry(ZipOutputStream.java:188)
at java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:116)
at java.util.jar.JarOutputStream.putNextEntry(JarOutputStream.java:90)
at GenerateData.createFinalJARArchive(GenerateData.java:361)
at GenerateData.run(GenerateData.java:87)
at GenerateData.main(GenerateData.java:72)
I hope you can help me
Thanks in advance
Stefan Siegl

while((c=in.read())>=0) jout.write(c);I guess you mean with '>' the bigger as '>' char
.right ?Yes, the "greater than" sign.
Just a standard stream copying procedure.
>
I use your code and set the compression to compressed
jout.setMethod(ZipOutputStream.DEFLATED);
jout.setLevel(8);
jout.putNextEntry(curEntry);
what i get is this exception:
java.util.zip.ZipException: invalid entry compressed
size (expected 787 but got 786 bytes)
at
java.util.zip.ZipOutputStream.closeEntry(ZipOutputStrea
.java:193)
at
at
at
t
GenerateData.createFinalJARArchive(GenerateData.java:51
at GenerateData.run(GenerateData.java:89)
at GenerateData.main(GenerateData.java:73)
So there is one byte missing! But i dont know where
?!It seems one can't reuse the entry.
Try to create a new one:
//jout.putNextEntry(curEntry);
jout.putNextEntry(new ZipEntry(curEntry.getName()));And I think it's a bad idea to try to change
the compression level between the entries.
At list untill you haven't got it working somehow.
>
But i finally want to do is to store the entries (and
the data) uncompressed but if i read byte by byte
there would not a uncompression, would it ?No. You read the data uncompressed.
here I also got an exception, indicating that the read
size was invalid.
Exception when doing it like this:
jout.setMethod(ZipOutputStream.STORED);
jout.setLevel(0);The setLevel(0) is redundant here.
jout.putNextEntry(curEntry);
is:
java.util.zip.ZipException: invalid entry compressed
size (expected 2805 but got
6015 bytes)
at
at
at
t
java.util.zip.ZipOutputStream.closeEntry(ZipOutputStrea
.java:193)
at
at
at
t
GenerateData.createFinalJARArchive(GenerateData.java:51
at GenerateData.run(GenerateData.java:89)
at GenerateData.main(GenerateData.java:73)
I hope someone can help me with that
Regards
Stefan Siegl
So my variant is:
jout.setMethod(ZipOutputStream.STORED);
while (entries.hasMoreElements()) {
   JarEntry e=(JarEntry) entries.nextElement();
   //write the appropriate entry to jout
   jout.putNextEntry(new ZipEntry(curEntry.getName()));
   //copy the actual data to jout
   InputStream currIn=curJar.getInputStream(e);
   int c;
   while((c=in.read())>=0) jout.write(c);
   currIn.close();
}Hope we finally took over.

Need help compiling external jar files into my one jar file from cmd line

Here is my problem, let me see if I can explain it right:
I am making a jar file on my development computer that will run my java project. In this java project, it references a couple Java3D jar files. On my development computer, I create the jar file and it runs correctly, but when I move that jar file over to the test computer, the parts of the application needing those Java3D jars are not found in my jar I created. I isolated the problem and it is because those Java3D jar files I needed are not on my test machine. But that is the way I need it to be. I need it so that when I compile all my code on the development machine, I need it to also compile those two Java3D files into my one jar that I move to the test machine. You get what I'm saying? I must do all the compiling from the command line and have only one jar file to put on the test machine that contains all my compiled code and the two Java3D files needed to run some of the applications in the project.
Here a brief sample of what I'm doing:
To compile my java files in my project, I simply to this for all my files:
javac file.java
javac file2.java... and so on for all my java files.
Then I create my jar file:
jar -cfm MyJar.jar manifest.mf file.class
jar -fmu MyJar.jar manifest.mf file2.class... and so on for all my class files.
Also when compiling my jar file, I do this thinking that it would include the two Java3D jars into my one jar file:
jar -fmu MyJar.jar manifest.mf jars/j3d-org-images.jar
jar -fmu MyJar.jar manifest.mf jars/j3d-org.jar
My manifest file looks something like this:
Manifest-Version: 1.0
Main-Class: Main
Class-Path: jars/j3d-org.jar jars/j3d-org-images.jar
Do I have to have that Class-Path in there pointing to those jar files? Those jar files will not exist on my test machine because the directory structure will not be the same. I've tried a manifest without specifying my Class-Path to those jar files, but I get the same problem when I run my application on the part that needs the Java3D files.
The error I am getting is that there is a RasterTextLabel class inside one of those Java3D jar files that my application cannot access because those jar files are not on my test machine.
So basically what I really need to know is how I get those two Java3D jar files compiled into my one jar file that I move to a test machine and run with the following command:
java -jar MyJar.jar
Can anyone help me??
Thanks.

Here what you need is to have all the files present in a single jar file, and the classpath is set properly to the required jar files.
Do the following in steps:
1)
Create a custom manifest file,say mymanifest.mf, with the following contenets, put it in current directory:
Manifest-Version: 1.0
Created-By: 1.4.0_01 (Sun Microsystems Inc.)
main-Class: Main
Class-Path: jars/j3d-org.jar jars/j3d-org-images.jar <press ENTER key>
2)
jar -cfm MyJar.jar manifest.mf file.class
jar -fmu MyJar.jar manifest.mf file2.class... and so on for all class files.
3)
jar -fmu MyJar.jar manifest.mf jars/j3d-org.jar
jar -fmu MyJar.jar manifest.mf jars/j3d-org-images.jar
(Make sure that j3d-org-images.jar and j3d-org.jar are present in a subdirectory called 'jars')
Now you would be able to run,
java -jar myjar.jar

Pass a object from one jar to another jar file

I have a common jar file which will communicate to the server for data validation purpose.But after validation it has to invoke different different jar file based on its response from the server.So, I might have a object which has to pass from the common jar file to a specific jar file.So, I like to know what will be the best procedure to achieve it.
Please help me out.

arpitak wrote:
Yes,jar file holds class files.one of class files wants to trigger a method of a class file which resides in different jar file.this is the situation I tried to describe.Let consider there are three jar files like JAR A,JAR B ,JAR C.Here JAR A is a common jar where other two jar could be used as a plug in. So based on the condition any one of them (JARS) will be triggered by the common jar(JAR A).this is the situation.The class file of JAR A will trigger some method or main method of the JAR B/JAR C.So,here how could I pass a object from one jar to another is my main question.
Is it clear now?
I need a solution for this very urgently.Are you looking for a plug-in framework? That is, dynamically discovering and loading plugins. I am not experienced in developing or using plugins. However Googling "java plugin" brings up JPF.
If you just have multiple jars that have different classes, the JVM will load the appropriate classes if it can find the jars through the standard classloader on the classpath or through a customer classloader.

How to combine Jars or Include dependent Jars into One Jar

Hello,
I have build a small utility using few libraries now i want to make a bundle or jar of this utility. I don't want to let use includes the jars individuals. I want to make a single jar using all the jars so user needs to include only one jar.
So i need to include the dependent Jar files into a single jar.
I got few solutions using Google.
Like:
adding a Class-Path: myjar.jar to MANIFESTfile.
simply update the jar with jar using commnad jar uf main.jar myjar.jar_
but these are not working. when i use the Class-Path option the Tree of main jar looks like
main.jar
    <default-package>
         myjar.jar
    META-INF
         MANIFEST.MF
How can i combine the Jars into a single Jar? Please help.

It is to tell the JVM where to look for additional classesDoes it mean if i includes dependent jars to main jar and if i specify the path then JVM find that jars to specified pathThat's what 'telling the JVM where to look for additional classes' means, isn't it? I don't know what else it would mean.
and don't need to include it separately?You only have to specify the Class-path in the manifest, and run the JAR file with java -jar. In fact if you specify a classpath on the command line with java -jar it will be ignored.
All this is in the documentation.

One-JAR usage

Looking all over for a way to jar jarfiles inside one jarfile (nested jarfiles). Uncovered the following:
[One-JAR|http://one-jar.sourceforge.net/] ( [See link|http://forums.sun.com/thread.jspa?threadID=5344801&tstart=50] )
And [Zamboch - URL access to nested .jar files|http://zamboch.blogspot.com/2009/03/url-access-to-nested-jar-files.html]
I decided to try the former. However the instructions (or lack thereof) for use left me bewildered. Has anyone successfully utilized this product? If so, can anyone offer help with settup and usage?
~Bill

If I am not wrong, and looking at the page, http://one-jar.sourceforge.net/index.php?page=ant&file=simple it seems they have defined the ant-task to build the jar file.
That means what you should do is
1) Download their stuff.
2) Add their jars in the class-path. set up the class path for ant and one-jar.
3) Use ant to invoke target one jar
        <one-jar destfile="hello.jar" manifest="hello.mf">
            <main>
                
                <fileset dir="${classes.dir}/src"/>
            </main>
            <lib>
                <fileset file="${build.dir}/lib.jar" />
            </lib>
        </one-jar>This will create a jar file called hello.jar file which will be used.
And I also guess reading the page that that your hello.jar file will not refer to the main class of your application but in the manifest.mf, the main class of your application will be referred under attribute . One-Jar-Main-Class:
What they do is load their own class first, which loads their own class loader. Their classloader, loads all the supporting jar files placed in lib folder (defined in manifest.mf as lib
| | commons-logging.jar
| /com.simontuffs.onejar
| | Boot.class
| | etc.
)

A Game in one jar file

I've wiritten a very simple game using jogl, and I won't to put all the files in one jar (resources, jogl classes, my classes, jogl natives), so there's no playing with jre needed for the user. My game loads classes and resources correctly from the jar, but the jre doesn't see the natives? Is there a solution?
Thanks in advance!

Java 3d api?
java.sun.com/products/java-media/3D/
btw. Powered by sun doesn't mean anything. If it is
not part of java SE or EE or other certifiable path
then its not going to be supported by 3rd party java
vendors, it doesn't matter if its done by sun, sun
isn't java. The whole point of java is write once run
ANYWHERE, not just on a few platforms, with wierd
JNI's that support a peculiar (though in OpenGL case
very good) hardware standard.java3d also uses native librarys (it runs on OpenGL or DirectX), so you face the same problem as with JOGL, you need to install it or load the native dynamic libs.
Java3D is a higher level API using a Scenegraph concept (OpenInventor). Due to this it's slower than the low level API JOGL which is just a java binding to access OpenGL.

One-jar on Linux?

Hello.
I am able to package my java app with a few dependent jars, icons, etc and create a one-jar .jar file. I can click on this file as if it was an executable and it runs nicely.
I tried to copy this to a Linux box however it does not run.
In linux from a shell I enter java myOne_jar.jar.
I get an error message NoClassDefFoundError.
I also tried java -jar myOne_jar.jar and this produced the following:
ctbtxfer:/opt/DEN # java -jar myOne_jar.jar
Cannot open configuration.ini/n
Cannot open userconfiguration.ini/n
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.simontuffs.onejar.Boot.run(Boot.java:243)
at com.simontuffs.onejar.Boot.main(Boot.java:89)
Caused by: java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Unknown Source)
The same JRE 1.6 is installed on both and by doing a java -version I can see the 1.6 version displayed.
Any Suggestions?

There is a chance the file names etc may not be
system independent and I am investigating this now.
Not sure if this is the problem since it runs when
not packed in the onejar.Well, these messages that the program prints do suggest that something is wrong with the file names:Cannot open configuration.ini/n
Cannot open userconfiguration.ini/nThe program not being able to find the configuration files can be what triggers the bug, but that would be only a symptom of the bug. The root cause of the crash is insufficient error checking.
It looks like the program assumes the files were there and could be read, and then tries to access objects that should have been constructed when the file was being read but weren't. This line of the stack trace certainly suggests that:Caused by: java.lang.NumberFormatException: null

How can I reference more than one jar file

hi, In an applet, I use
Archive = "foo.jar" to reference this jar file.
But how can I reference more than one file?
Thanks.

Suggestion: spend a few minutes reading the tutorials.
http://java.sun.com/docs/books/tutorial/applet/appletsonly/html.html
You can specify multiple archive files by separating them with commas:
<APPLET CODE="myapplet.class" ARCHIVE="file1, file2" WIDTH=anInt HEIGHT=anInt>
</APPLET>

Duke$ - Multiple packages in one jar... again

My jar contains 2 packages.
One is my own, the other one is the JNIRegistry from Ice. (Excellent for Windows. Download it at: http://www.trustice.com/java/jnireg/index.shtml )
My application starts from the jar file and works just fine, but as soon as one of my classes tries to import/load a class from the com-package, the NoClassDefFoundError exception is thrown.
I created the jarfile in my app-folder by using:
jar cfm myJarFile.jar manifest.mf myPackage com
This is the folder tree:
C:\
|
|-app
|
|--com (folder)
|
|--myPackage (folder)
|
|--manifest.mf
I have checked the contents of the jarfile, nothing is missing.
This is the manifest file:
Main-Class: myPackage.App
I am sure there must be a way around this... The closest solution I have found was at:
http://forum.java.sun.com/thread.jsp?forum=22&thread=30891
It says specify each class you want to import from the other package, for example dont use
import com.ice.jni.registry.*;
but
import com.ice.jni.registry.Registry;
import com.ice.jni.registry.RegistryKey;
import com.ice.jni.registry.RegStringValue;
So I did. Nothing changed, still the NoClassDefFoundError
Any help?
Thanks in advance

Hey guys,
This is how you do it. I have an example here for you to follow:
-----Test.java
package com.test;
import another.one.*; // note * is ok to use!
class Test
     public static void main(String[] args)
          System.out.println("Hello from Test!");
          Target.main(null);
}------Target.java
package another.one;
public class Target
     public static void main(String[] args)
          System.out.println("Hello from Target!");
}place files like so:
{path}/com/test/Test.java
{path}/another/one/Target.java
compile classes, then create a manifest:
---manifest.txt
Main-Class: com.test.Test
{a blank line here}
place at:
{path}manifest.txt
now create jar;
{path}> jar cmf manifest.txt myJar.jar com/ another/
and enjoy ;-) java -jar myJar.jar
-Ron

I get a message every time when I execute one jar file

I have a problem when I try to execute jar files. I use this command: java -jar jarfile.jar. Ok, the jar file is executed, but I receive many messages while the jar file is executed.
Message:
The applet is attempting to invoke the java/lang/System.exit() operation - options: Allow or Disallow or Stop Applet, other example: The applet is attempting to invoke the java/Lang/System.getProperty()
This is one of many other messages that I receive. I'm trying to install the UML plugin for eclipse (omondo - www.ejb3.com)
thanks
Edited by: Dixavado on 06/05/2008 16:36

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Setting Classpath so one jar can access another jar

I am having trouble with running an application as a jar that accesses other custom libraries.
I have made a small example to try to get this working.
I have
     HelloWorld.class - that prints out "HelloWorld" and then throws a custom exception JWIException
     JWIException - exception that is in a package com.jeffersonwells.util
I have put the JWIException class in the directory D:\apps\jbin\com\jeffersonwells\util.
I have a manifest file that looks like the following.
     Manifest-Version: 1.0
     Main-Class: HelloWorld
     Class-Path: "d:\apps\jbin\"
I have created a jar with the manifest file and the HelloWorld class
When I run the jar, I get the following
     Exception in thread "main" java.lang.NoClassDefFoundError: com/jeffersonwells/util/JWIException
So, I believe the classpath is not being set correctly.
Then the second part would be to get the HelloWorld app to access the JWIException in another jar file instead of in the directory structure. I assume if the first scenario gets working, this will be fixed as well.
I would greatly appreciate any assistance you can provide.
Thanks,
Tom Krueger

I thank you all very much. The problem I was having was with not having relative paths in my Class-Path.
Having the relative paths will work for the most part, however, sometimes we may want to move the executable jar to a different location. Does anyone have a great solution taking the following into consideration.
Previous posts have said you can reference classpaths through http or ftp. Great, however if you set this to your http://domain/whatever I'm assuming this will prohibit you from moving the application from dev to test to production without modifying the url.
Thanks for any thoughts!!
P.S.
I'm also in a battle here whether to jar libraries or not. jaring allows you to easily move them from server to server and more importantly for me determine versions of compatible files. However, the argument against jaring is speed of development, why jar if I can pull up a java file compile it and copy it to the server. Why waste time in the whole jaring process.
Thanks again!!!

One Jar distribution

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