Testing executable Jar file on different OS

I wrote a very simple Java program that counts cards. I know it works on Windows and I assumed that because it is written in Java that it will work on any operating system. However my friend said he ran it on a Mac and it bombed out.
So I would like someone to download it and run it on their operating system and tell me if it works. If it doesn't work could anyone give me a possible reason why not.
http://www.geocities.com/onyaweb/Java for the download page.
http://www.geocities.com/onyaweb/Java/Card.jar is the download.

2 ways round the problem...
1 compile for every platform in the known and unknown universe...
2 set system requirements (all programs have them) that the user has a JVM suitable for your code and send class/jar as appropriate
pros and cons
1 pro. more attracive software, con. you need access to each platform your target customers might use (compiling for each isnt a big deal) OR get a cross platform compiler (does that exist for java?)
2 pro. there is a JVM for every platform that there is a compiler for (guess), con. more work for the user to do, but worth it on thier part (everyone should have a JVM)

Similar Messages

Executable jar files and manifest file

Hi,
I have the following files in a folder named: Test
a.jar
b.jar
c.jar
Driver.class
Driver.mf
Here, MainClass is the main executable class that uses a,band c.jar files. This is how my MainClass.mf file looks:
Manifest-Version: 1.0
Main-Class: Driver
Class-Path: a.jar b.jar c.jar
Now I use the following command to make one executable jar file:
jar cmf Driver.mf DriverMain.jar *
It creates an executable jar file named : DriverMain.jar
Now I copy the executable jar file (DriverMain.jar) into a different folder named: RunTest
and double click it, doesn't work.
my question is:
what am I doing wrong? Any special characters needed in my Driver.mf file (space/newline/etc)?
What I am trying to get is: One execuatble jar file so I can just double click to run it, and that single executable jar file will have all the necessary jars in it (i.e. a.jar, b.jar, c.jar in this case)
Anyone please help!
Thanks
-Ron

Rony,
Sorry to disappoint, but you can not use embeded jar/zip files within an executable jar. The JDK sadly for some reason decided this was not a useful idea, so developers like me who want to distribute plugins with thier own dependencies have one of two choices. You either have to unzip the jar file that contains the embeded jars to a directory, then run your primary exectuable jar, OR you have to write a custom classloader that your "launcher" creates then loads the embeded jar files.
The best thing to do is either jar up a, b, c and driver into one jar, so that it works, if you can legally do this. A lot of 3rd party libraries may not allow this per their license. Otherwise, another choice is to use a free installer or buy an installer that allows you to distribute a single exectuable installer program that will properly create the dir structure you need.
As for the way it works, if you declare:
Class-Path: a.jar b.jar c.jar
the JAR loader code in the JDK looks in the root dir where your application was started for a/b/c jar files. They have to be on disk.
If you want to place them in /lib, for example, you would havd a jar file like:
Driver.class
Driver.mf
lib/a.jar
lib/b.jar
lib/c.jar
When unzipped, your "root" dir would look exactly like the above, and your manifest would have Class-Path using ./lib/a.jar ./lib/b.jar ./lib/c.jar
Anyway, there thus far isn't any way around this issue of embeding jar files in an executable jar file. You MIGHT be able to not specify any classpath, then in your Driver.class, create a new custom classloader that dervies from URLClassLoader, but in the findClass(), you get a ref to the .jar file that the classloader class is inside of, and from that use it to find the lib/*.jar files and add them to the classpath. For this to work, however, your Driver.class code should ALSO be contained in an embeded jar file that is loaded by this custom loader. The only thing Driver.class would contain (and I would rename it to something like Launcher) is the code to create the custom classloader.
It's fun stuff, but a little bit of work to make it work. You can infact make it work! I may yet one day take our plugin engine custom loader and create a way for this to work!

Executable JAR file: Could not find the main class.

Hello,
I have a problem with making an executable JAR file.
I have written a JAVA program that consists of five different classes of which User.java is the main class and I have saved a text document with Main-Class: User and a blank line after that.
If I try:
jar cmf MainClass.txt User.jar User.class Beheerder.class Operator.class Manager.class MaakVisueelSchema.class
it makes a executable jar file which actually works! :)
But when the Operator class trys to open the MaakVisueelSchema class the screen stays blank.
I can run MaakVisueelSchema with java MaakVisueelSchema.
So I tried to make an executable JAR that consists only of MaakVisueelSchema, the same way as I did for User:
Main-Class: MaakVisueelSchema
jar cmf MainClass.txt MaakVisueelSchema.jar MaakVisueelSchema.class
Then I get the error message:
Could not find the main class. Program will exit.
from the Java Virtual Machine Launcher.
The big difference between MaakVisueelSchema and the other classes is that MaakVisueelSchema contains a PaintComponent method and an ComponentListener. Is it possible that one of those creates the error?
Can anyone help me with this problem?
Thanks in advance!
Bye!

Yes,
I tried:
jar xvf MaakVisueelSchema.jar
and it returns:
META-INF/
META-INF/MANIFEST.MF
MaakVisueelSchema.classN/G. You need to manually create a manifest file in a text editor, have it point to your main class, and enter it in your jar command as an argument.

Add classpath in an executable jar file

an executable jar file contains a manifest file with entry main-class: MyApplicationClass.
if we double click the jar file on Windows OS, main class is loaded.
my question is:
if classes in he jar file use classpaths which are not default, how to add those classpaths into manifest file to tell classes to use those classpaths?
it is similar to command line:
java -classpath c;\mypackage; .......; MyApplicationClass

Thanks, i will try soon.
here is another Q.
if i need to add tools.jar (JDK lib) as classpath in manifest file, it is as following in my PC
d:\install\java\jdk14101\lib\tools.jar.
but my customers install JDK in different path (should be considered as unknown), how to add it as entry Class-path for all customers?

[b]Simple Deploy problem- making an Executable JAR File ...PLEASE HELP [/b]

Hi all,
I Trying to deploy a simple J2SE app by making an Executable JAR File, however I don'r understand how to add a valid value to the Main Class field.
I followed the following description within Jdev, after creating a Deployment Profile:
Deploying an Executable JAR File
You can make your simple archive or J2EE Client Module into an executable JAR file that you can launch with the java command.
To deploy an executable JAR file:
1) Select and right-click the simple archive or client icon in the Navigator to display the context menu.
2) Choose Properties.
3) Click JAR Options in the tree.
4) Select Include Manifest File (META-INF/MANIFEST.MF).
5) In the Main Class field, enter the fully qualified name of the application class that is to be invoked.
7) Click OK.
8) Launch the executable JAR file from the command line:
java -jar myapp.jar
where myapp represents your JAR file name.
Like I said it's in 5) I'm doing something worng
My deploy-file (PlotPrint.deploy) looks the following:
<?xml version = '1.0' encoding = 'windows-1252'?>
<client-deployment xmlns="http://xmlns.oracle.com/jdeveloper/903/deploy/j2ee-client-jar" nselem="client-deployment" class="oracle.jdeveloper.deploy.jar.ClientProfile">
<archiveOptions>
<additionalManifests/>
<compressed>false</compressed>
<hasManifest>true</hasManifest>
<mainClass>PlotPrintClient</mainClass>
</archiveOptions>
<archiveTargetPlatform/>
<cdaSettings>
<additionalArchives/>
<afterFilters/>
<beforeFilters/>
<duringFilters/>
<selectedArchives>
<archives>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdbc/lib/classes12.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdbc/lib/nls_charset12.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdev/lib/jdev-rt.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/soap/lib/soap.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlparserv2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jlib/javax-ssl-1_2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jlib/jssl-1_2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/activation.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/mail.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/http_client.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/webservices/lib/wsdl.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlparserv2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlcomp.jar!/"/>
</archives>
<selectionMode>0</selectionMode>
</selectedArchives>
</cdaSettings>
<defaultConnection class="java.lang.String"/>
<deployClientMaxHeapSize/>
<earURL path="deploy/PlotPrint.ear"/>
<enterpriseAppName/>
<jarURL path="deploy/PlotPrint.jar"/>
<profileDeps/>
<properties/>
<selectedProjectFiles>
<autoInclude>true</autoInclude>
<deploySourceAs>0</deploySourceAs>
<files class="[Ljava.net.URL;"/>
<selectionFilters/>
</selectedProjectFiles>
</client-deployment>
I using Oracle9i Jdev, but have also tried it un the new Jdev 10g version, but the same problem everytime:
Error message: Could not find the main class: program will exit.
Please help I really need this to work
Message was edited by:
MHCI
Message was edited by:
MHCI

Yes that was the problem so I have changed the element mainClass to
<mainClass>xxPlotPrint.MHCI.PlotPrintClient</mainClass>
But now another probem has occured, since I get the following error when run the jar-file (When I run the app from within Jdev there are no warnings or errors).
----Batch-file-----
@echo off
java -jar PlotPrint.jar
echo Test Plot and Print Batch-file!
pause
---- out to cmd ----
Exception in thread "Thread-0" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.NNE35_worker.run(NNE35_worker.java:42)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-2" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.OCEJobDB_worker.run(OCEJobDB_worker.java:41)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-1" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.NNE27_worker.run(NNE27_worker.java:42)
at java.lang.Thread.run(Unknown Source)
It's the same problem in all three exceptions (the exactly the same code), however I was a bit to quick this is the line (the line before I process the xml doc :-)
import org.w3c.dom.Element;
responseData = new Vector();
responseData = test_NNE35_SOAP.getXSDdoc();
Element elements = ( (org.w3c.dom.Element)responseData.elementAt(0) ); (line 42)
Please help I don't understad why I receive this exception, since I included the xmlparserv2.jar file, and don't even have a workaround :-(

Finding a file in the current executable jar file.

Hi all,
I am writing a little command line type application and I thought it would be neat to embed it's 'help file' into it's executable JAR file.
Please can someone show me how to code my application to extract a file from the JAR file from which the Main.class also came?
(Is that possible?)
I've been looking around, I can find out how to work with a different JAR file but NOT how to examine the currently 'executing' one.
Many thanks,
- jon.

Excellent! Thank you very much. It's easy when you know how. This works a treat!:
     private static void printHelp() {
          InputStream helpFile = Misql.class.getClassLoader().getResourceAsStream("doc/MISQLhelp.txt");
          if (helpFile == null) {
               _out.println("Help file: doc/MISQLhelp.txt not found.");
               return;
          try {
               int c;
               while ((c = helpFile.read()) != -1)
                    _out.write(c);
               helpFile.close();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          return;
     }

Associating executable Jar files w/ appropriate program

Hi, I'm kinda new to java but this question is more OS related I think. I made a GUI program that reads / writes files and does some other stuff, I compiled it, then made it into an Executable JAR file. I put the file on my dektop w/ the required resource file (contains the read files) and then I double-click it and lo and behold Win-Ace(R) popps up. I right-clicked on the executable jar file, associated it with JAVAW, double-clicked again and it worked. So i guess my question is, is there a way that it will automatically associate itself with the right program so when I give this program to other people, they won't have to associate it the same way?
Anyhelp would be greatly appriciated!

No, becourse even if java could do that it would make sence becourse to run the jar it must be associated with javaw.
But you could try to create a .reg file (registry file) that associate jar with javaw, when somebody runs the reg file it associate jar with javaw.
But I think you should make different reg files for different windows versions (not sure about that).
I don't have experience with how to write reg files but you just google.
But I should try it out on your own windows, you could install windows on another partion and try it out on that one (first make a image with norton gost or something so if something goes wrong you can fastly get back to the old state).
But you can also export your registry to a file so you can put the old registry back if somethings goes wrong.
Use these tips on you own risk!!!

How to pass paramets to executable jar file

hello,
i have made a executable jar file. i want to pass a text file to the MAIN class of that executable jar at runtime, what can i do ?
kindly please help.
regards,
mohamed asif

I was not thinking of changing the manifest, but of how you invoke the main class.
Consider the following three files:
File: test.txtThis is
a text fileFile: manifestmain-class: JarTestFile: JarTest.javaimport java.io.*;
public class JarTest {
    public static void main(String args[]) throws IOException {
        BufferedReader in;
        if(args.length == 0) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(args[0]));
        System.out.printf("The first line is: %s%n", in.readLine());
}Compile and run like the following:pbrockway@linuxdeskd6off:~/Desktop$ javac -cp . JarTest.java
pbrockway@linuxdeskd6off:~/Desktop$ jar cmf manifest test.jar JarTest.class
pbrockway@linuxdeskd6off:~/Desktop$ java -jar test.jar test.txt
The first line is: This is
pbrockway@linuxdeskd6off:~/Desktop$ java -jar test.jar <test.txt
The first line is: This is
pbrockway@linuxdeskd6off:~/Desktop$ cat test.txt | java -jar test.jar
The first line is: This is
pbrockway@linuxdeskd6off:~/Desktop$In each case the contents of the text file are available to
the main() method.

Multiple jar files from different locations

Hello,
I am having an applet that access code from two different jar files. Of them one is a common jar file for many applets. So I couldn't place it in the local dir as that of the applet's html. I am not using any web server.
     Just to give you a feel of it :
     <PARAM NAME = archive VALUE = "DVApplet.jar,DVVP.jar" > are the jar files my applet is dependant on. But DVVP.jar has to be accessed from a dir different from local dir.
     Will be glad if someone can throw some light on accessing different jar files from different dirs.
     Thanks for your time.
Regards,
Anantha

[url=
http://forum.java.sun.com/thread.jsp?forum=421&thread=425724&tstart=0&trange=100
]This question is a bit similar
You can use a class loader to do such things.

Class not found error while executing jar file

I have written a java code in which i am connecting to database....when i run the class file using......java class_filename it works........
but when i run the jar file using .......java -jar jar_name ...yi gives me the error as 'Class not found'......
can anybody help me please......
Thanks and Regards,
Siddhesh

that class is part of jar file.....in classpath i have included zip files for jdbc ...to get databse connection.....and the jar being executed ................still it gives the error ClassDefnotfound which i think is due to database connection problem.....the exception is raised while.....
Class.ForName("Driver_name").newInstance();/ This driver is present in zip files that i have added in classpath....
above statement doesn,t giv error while i execute the class file............but exception while executing jar file only..
Thnaks and regards,
siddhesh

Why -jar option used to install a software which is in executable jar file?

Hi all,
i have a query, i have a generic installer which is used to install the oracle weblogic 10.3 software in unix platform(i.e., which is in .jar extension) which is executable jar file.
To install this software which have to use -jar option to install
java -jar net_server<version>_generic.jar
my question that why we use -jar option to install or to extract the software
can any one clarify my doubt...
thanks in advance
abhi
Edited by: sumanth_abhi on Jan 27, 2009 11:50 PM

According to the Jar Guide (http://java.sun.com/j2se/1.4.2/docs/guide/jar/jarGuide.html)
Executable Jar Files
On Microsoft Windows systems, the Java 2 Runtime Environment's installation program will register a default association for Jar files so that double-clicking a Jar file on the desktop will automatically run it with javaw -jar. Dependent extensions bundled with the application will also be loaded automatically. This feature makes the end-user runtime environment easier to use on Microsoft Windows systems.
The Solaris 2.6 kernel has already been extended to recognize the special "magic" number that identifies a Jar file, and to invoke java -jar on such a Jar file as if it were a native Solaris executable. A application packaged in a Jar file can thus be executed directly from the command line or by clicking an icon on the CDE desktop.
Despite that every JAR file can be executed as a program if and only if the META-INF/Manifest.mf contains the Main-Class tag. This done through java -jar jarfile.jar
--olaf

How can I add image files to a executable jar file ?

Could you tell me how can I add image files to executable jar file ?
package structure:
../com/Main.class
../images/..

Please don't cross post, and read this
http://forum.java.sun.com/thread.jsp?forum=31&thread=271751
I've answered the question in the New To Java thread.

Classpath is not working for executable jar file

I have created executable jar file using following command where manifest file contains Main-Class and Class-Path entries.
jar cvfm app.jar META-INF/* lib/* *.class
So here app.jar contains my external jar's in lib directory
but when I move app.jar to another directory, it's doesn't get my external files.
I'm not getting this problem as these jar's are in app.jar
class-path entry in manifest file:
Class-Path: lib/abc.jar lib/xyz.jar
Pls help me where it is getting fail?
Thanks in advance,
Vikas

Java doesn't handle jars within jars. Your library jars need to be outside of the executable jar as in
dist - main.jar
- lib - lib1.jar
- lib2.jar

Including a jar file inside an executable jar file

Is it possible to include a jar file inside another (executable) jar file such that the included file is part of the class path for the outer file? If so, how do you specify this in the classpath in the manifest?

Russ_Bjork wrote:
Is it possible to include a jar file inside another (executable) jar file such that the included file is part of the class path for the outer file?No. Actually, I suppose it would be possible if you do all the 'heavy lifting', but Java is not designed to handle Jars within Jars.
What do you see as the advantage of doing that?
Is your app. a rich client (e.g. Swing, AWT, SWT..)?
Can you distribute the app. from a server or the internet?

Main-args in executable Jar file. Possible?

Hello all!
Is it possible to specify arguments for the main class of an executable jar file?
If you call it on the command line this might be possible but what to do if you start the jar with double click?
Any chance?

i don't think so, see http://java.sun.com/docs/books/tutorial/jar/basics/mod.html

Testing executable Jar file on different OS

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