How create shared Library for JNI

Please tell me how to create a shared Library for vc6.0. I have created <.h> file of java class. Please Help me.

This is a duplicate of
http://forum.java.sun.com/thread.jspa?threadID=676996

Similar Messages

Creating a shared library for JNI in windows

I went through the JNi tutorial online and it worked just fine on a Linux computer. Now I'm trying to make do the same tutorial on windows. When I get to the step 4. Create a Shared Library, I'm stuck. I don't know how to create this shared library on windows. It gives an example using Visual C++ but I don't have that. Any tips or advice out there what I should do? Any help would be greatly appreciated.

//mac.java
class mac
    public native void getMac();
    private native String getLine(String prompt);
    static {
     System.loadLibrary("myMac");//This is myMac.DLL
     /*if generated by borland
     System.loadLibrary("mymac");//This is mymac.dll
     public static void main(String[] args)
    mac mc=new mac();
    String input = mc.getLine("Enter Some Thing ");
    System.out.println("You Entered " + input);
    System.out.println(mc.getMac());
prompt> javac mac.java
prompt> javah -jni mac
Borland compiler
/*mymac.c*/
#include <jni.h>
#include "mac.h"
#include <stdio.h>
JNIEXPORT void JNICALL
Java_mac_getMac(JNIEnv *env, jobject obj)
    printf("I am in getmac dir in mymac.dll (Borland) \n");
    return;
JNIEXPORT jstring JNICALL
Java_mac_getLine(JNIEnv *env, jobject obj, jstring enter)
    char buf[128];
    const char *str = (*env)->GetStringUTFChars(env, enter, 0);
    printf("%s", str);
    (*env)->ReleaseStringUTFChars(env, enter, str);
    scanf("%s", buf);
    return (*env)->NewStringUTF(env, buf);
To generate DLL
create bcc32.cfg file in %BORLAND_INSTALL%/BCC5/bin Folder
In the bcc32.cfg file add following code
-I"%BORLAND_INSTALL%\BCC55\include;%JAVA_HOME%\include;%JAVA_HOME%\include\win32"
-L"%BORLAND_INSTALL%\BCC55\lib;%BORLAND_INSTALL%\BCC55\Lib\PSDK;"
i.e the path for borland compiler and java.
now goto prompt and say
prompt>bcc32 -tWM -tWD mymac.c
This will create mymac.lib File
Now say
prompt>implib -c mymac.lib mymac.dll
That's it!!
there you are with dll
Now you can run the mac.class file by using java
VC++
Click File->New->Win32Dynamic-Link Library
Give name and Select
A simple DLL project
You will have
myMac.CPP file
// myMac.cpp : Defines the entry point for the DLL application.
#include "stdafx.h"
#include "mac.h"
#include "jni.h" //can copy or give full path
#include <math.h>
BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD ul_reason_for_call,
                       LPVOID lpReserved
    return TRUE;
JNIEXPORT void JNICALL
Java_mac_getMac(JNIEnv *env, jobject obj)
    printf("You are in getMac (VC++) DLL\n");
JNIEXPORT jstring JNICALL
Java_mac_getLine(JNIEnv *env, jobject obj, jstring enter)
    char buf[128];
    const char *str = env->GetStringUTFChars(enter, 0);
    printf("\n%s", str);
    env->ReleaseStringUTFChars(enter, str);
    scanf("%s", buf);
    return env->NewStringUTF(buf);
Hope this is useful
regards
kanad Deshpande

Compilation error in creating shared library via JNI

Hi ALL,
I amin serious trouble with a problem. I am developing a Simulator, a function of which is to decode MPEG-2 Video files in real time and play it as well.I have got a MPEG-2 Decoder implemented in C from an open source and need to integrate with my Simulator which is writtebn in Java. The integration part I am doing via JNI(Java Native Interface). Now I have a bunch of C files in MPEG-2 decoder which are to be compiled during the Execution of the Java Simulator.Can anybody give some idea about how to call multiple C files from the Java Source through JNI at one go? Another problem I am facing is in calling a single C code from the traditional "HelloWorld" Java Code itself. The problem comes when I am trying to compile the shared library between the C native code and Java Code in my Linux Machine...I am getting the following message:
/usr/lib/gcc-lib/i386-redhat-linux/2.96/.../../../crt1.0 : In function '_start' :
/usr/lib/gcc-lib/i386-redhat-linux/2.96/.../../../crt1.0(.text+0x18): undefined reference to 'main'
collect2: ld retrurned 1 exit status
What does the above errot mean? How to rectify it.It will be of great help if you anybody can give me clues.

It means that your compiler options are wrong.
You need to create a shared library.
Instead you are creating an executable, which is not the same as a shared library.
If you search this forum you will find posts with command line options that work.

Create Shared Library for toplink.jar

I have followed the "How-to: Swap Oracle JDBC Drivers" http://www.oracle.com/technology/tech/java/oc4j/1013/howtos/how-to-swapjdbclib/doc/readme.html and try to do the same for toplink.jar.
However, when I check with the call oracle.toplink.Version.getVersion() it still return that I'm using 1013 DP4 toplink.
From the post in Toplink forum Re: Change Toplink library version used on 1013 DP4 it seems that it is difficult, to use another toplink version in 1013 DP4...
I would like to confirm if that's the case? Any other methods I can try?

This is a duplicate of
http://forum.java.sun.com/thread.jspa?threadID=676996

HT1660 How do I create a library for a second iPod?

How do I create a library for second iPod?

See How to use multiple iPods, iPads, or iPhones with one computer for the official suggestions. In practice a single library with each device syncing to one or more playlists is much the easiest way.
tt2

How can I quit the photos app? It has been trying to create a library for hours but nothing happens. when I try to quit, it won't let me.

How can I quit the photos app? It has been trying to create a library for hours but nothing happens. when I try to quit, it won't let me. Have just upgraded from iPhotos so don't want to lose any content.

How can I quit the photos app? It has been trying to create a library for hours but nothing happens. when I try to quit, it won't let me. Have just upgraded from iPhotos so don't want to lose any content.
Force-quit Photos as recommended by Arsenal1607.
Make backup of your iPhoto Library and run the iPhoto Library First Aid tools to repair the permissions on your library and rebuild the iPhoto Library.
To launch the First Aid Tools hold down the alt/option and the command key simultaneously while double clicking the iPhoto Library to launch the iPhoto Library First aid tools. You'd to hold down both keys firmly and long enough, until the First Aid panel will appear.
Try both the options "Repair Permissions" and "Rebuild library". Then try again to migrate the iPhoto Library to Photos by dragging it onto the Photos icon in the Dock.
Make sure, you have plenty of free storage. Don't try the migration, if you are running out of storage.

Linux Cannot Create Shared Library to call from Labview. Anyone have any ideas?

Hi there. A while back i created a shared library (.dll) to call in labview which works great. Lately i have been using Linux more and more and was hoping to recompile the shared library for use in Linux Labview. My first go I am getting the following error #error "Unknown Linux platform" from the platdefines.h. Evidently it does not like my system. Using QT creator on linux mint 64 bit. Anyone have any ideas on how i can get this working?
thanks so much!

I have a few version questions: What version of Windows was this DLL orignally created in? What version of LabVIEW are you using? What version of Linux are you using?
I think you will also find this previous discussion forum thread useful: http://forums.ni.com/t5/LabVIEW/Calling-DLL-on-LabVIEW-for-Linux/td-p/58322

What is the best way to create shared variable for multiple PXI(Real-Time) to GUI PC?

What is the best way to create shared variable for multiple Real time (PXI) to GUI PC? I have 16 Nos of PXI system in network and 1 nos of GUI PC. I want to send command to all the PXI system with using single variable from GUI PC(Like Start Data acquisition, Stop data Acquisition) and I also want data from each PXI system to GUI PC display purpose. Can anybody suggest me best performance system configuration. Where to create variable?(Host PC or at individual PXI system).

Dear Ravens,
I want to control real-time application from host(Command from GUI PC to PXI).Host PC should have access to all 16 sets PXI's variable. During communication failure with PXI, Host will stop data display for particular station.
Ravens Fan wrote:
Either. For the best performance, you need to determine what that means. Is it more important for each PXI machine to have access to the shared variable, or for the host PC to have access to all 16 sets of variables? If you have slowdown or issue with the network communication, what kinds of problems would it cause for each machine?
You want to located the shared variable library on whatever machine is more critical. That is probably each PXI machine, but only you know your application.
Ravens Fan wrote:
Either. For the best performance, you need to determine what that means. Is it more important for each PXI machine to have access to the shared variable, or for the host PC to have access to all 16 sets of variables? If you have slowdown or issue with the network communication, what kinds of problems would it cause for each machine?
You want to located the shared variable library on whatever machine is more critical. That is probably each PXI machine, but only you know your application.

Office365- I created shared mailboxes for a user- they show on web but not on Outlook2013

I created shared mailboxes for a user- they show on web but not on Outlook2013-
If the user logs on to office365 web - I can see the 3 shared folders- but if when she opens Outlook she is not able to see them-
Do they - should they be manually added ? How ?
Thanks !!

Hi,
Thanks for your question.
Not sure what exactly you mean by "created shared mailboxes for a user", by default, Outlook automatically loads all mailboxes to which the user has "Full Access" permission. So please first check if you have granted the right permissions
for that mailbox to the user.
When I say "By default", I mean you didn't disable the Outlook Auto-Mapping service. If you did, then the shared mailbox will not be automatically added to the user's Outlook profile. So please have a check on this:
https://support.microsoft.com/kb/2646504
Also, please note if the shared mailbox was just created, or the user was just added as a member of that shared mailbox, you probably will need to wait for a few hours for the shared mailbox to appear in the user's Outlook folder.
Regards,
Ethan Hua
Forum Support
Come back and mark the replies as answers if they help and unmark them if they provide no help.
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Create shared library on external drive from scratch

I have seen many posts about creating shared iTunes libraries on external drives with many different configurations, but mostly with pre-existing libraries. My question is creating the library from scratch. The purpose is obviously to share songs among several computers AND only have one copy of a song as to not take up unnecessary disk space on several computers.
All of our songs are on an external USB hard-drive attached to Airport Xtreme. Every song is in album folder, and every album folder is in an artist folder (very organized). All the artist folders (with their album and then song contents) are in a root folder called "Songs" on the external hard-drive.
We have upgraded our three Macs (iMac, MBP and MacMini) to Leopard and deleted all iTunes folders on each local hard drive (there was nothing in them anyway). We now want to create ONE iTunes folder on the hard drive so that each computer can access it. What are the steps? Here is what I "think" I've learned here on the postings with my questions:
1) First I opened iTunes on my first, main computer (iMac) and went into "Preferences" to change the iTunes music folder to [Ext HD]:iTunes:iTunes Music. The option, "Copy to music folder..." is deselected. (This will also be done on the other computers).
2) Now what to do? I could just move all of my song artist folders with their album subfolders and music files inside them, into the "iTunes Music" folder. But then what do I click to get iTunes to see all the songs and put them in its database? The other option is click "Add to Library" - but then don't I have to select all the individual songs? (I actually tried the latter method and it kept crashing). Can I just move all the folders into [Ext HD}:iTunes:iTunes Music folder and click something to get it to create its database based on all the music files that are now in its subfolders?
3) Next step. I have seen many people write that they then create an "Alias" and put the Alias in their "Music" folder on their LOCAL, computer's hard drive. Could someone now explicitly, step-by-step, describe how this is done? I assume I go to the external hard drive. Am I creating an alias of the entire "iTunes" folder, or of the "iTunes Music" subfolder, or of the library file??? Please answer this specifically.
So now I have "XXX alias" that I copy to my local, computer's hard drive and put it on my desktop. I take out the "....alias" word, and drag it to my local "Music" folder. It asks me to replace the existing folder/file, and I say yes. Correct? And then I do this on all three computers, correct?
4) Finally, after I've done all of this, I still have the following functionality questions -
4a) When we now add to the library, either from a CD or online purchase, ONE copy of the music should go in the "iTunes Music" folder on the external drive, correct?
4b) This system means that all three computers MUST have the same iTunes library, playlists, etc, correct? The downside of this system is that you cannot personalize libraries for each computer and just share the actual music files, correct? (If so, is there another process [steps 1-4 above] that results in a more customizable system where *ONLY ONE COPY* of the actual song file is shared?)
Sorry for the length of the message, and the questions. Truly I have read all the postings but was unable to map out my plan before I go and creating, finally, this one set of music that we can share. In advance, thank you all for your help.

I was afraid you'd say that, because I'm a long time Mac guy and I don't have the perfect answer. Have you ever messed with remote desktop? That'd seem to give her full access and control, something I personally wouldn't do, although it may work for you.
Another thought came to me that might work: copy over the complete library to her machine, and then when you do another major shoot, create a new catalog, edit, etc.and then import as catalog to you main one while sending her the new one.
I am sure there are more elegant solutions, but these are a couple of ways.

Setting up a shared library for multiple accounts on the same machine

I am in idiot. I can't figure it out. This is exactly what I did.
1 - I set up multiple accounts on the computer. 1 for me and another for my wife.
2 - I loaded all the music into my account's public folder.
3 - I set the default folder in both hers and mine iTunes for this Public folder
4 - I then opened iTunes in my account and none of the songs were showing up so I dragged the folder into iTunes and it did its business. Now my account is all set.
Here are my questions:
A - Do I need to drag the folder into my wife's account iTunes as well?
B - If either of us add music when logged in, will it automatically update in the other iTunes interface or is there something specific that needs to (manually) be done?

Doing it the way you did, you each have your own iTunes library file and are using the same iTunes music folder.
Changes by one will not be seen by the other and any new music added by one will have to be added to the library by the other.
Also, if one deletes music, it will be in teh library for the other but it will not be playable because the other person deleted it in the iTunes music folder.
Launch iTunes, then immediately press and hold Option, then select *Create new library*.
Create one in Users/Shared.
Quit iTunes.
Move all your music into the new /Users/Shared/iTunes/iTunes music folder.
Login to your Wife's computer account.
Move all her music into the new /Users/Shared/iTunes/iTunes music folder.
On her account, launch iTunes, then immediately press and hold Option, then select *Choose existing library*.
Select the _iTunes library file_ in /Users/Shared/iTunes.
In iTunes, File -> Add to library and select the iTunes music folder in /Users/Shared/iTunes.
All the music will be there.
Quit iTunes and log out of her account and back into your account and launch iTunes normally.
All music will be there.
You should go to /Users/Shared/iTunes folder and right click - get info, click *Ownership & Permissions*. Set *You can* to *Read & Write* and set Others to *Read & Write*.
Click *Apply to enclosed items*.
Any changes (new/deleted music, ratings, playlists, etc.) by one will be seen by the other sionce you are using the same iTunes library file.
Only one person can have iTunes open at a time. If you use Fast User switching, one will need to quit iTunes before the other can use it.

Creating shared library of native method implementation using gcc

Hi
I am using Dev-C++ IDE for writing and compiling C Programs. It supports gcc.
I have to build a shared library of a native method implementation using gcc compiler.
In JNI tutorial build script is given for VC++ which is as follows
cl -Ic:\java\include -Ic:\java\include\win32
-LD HelloWorldImp.c -Fehello.dll
Similarly I wanted build script for gcc compiler.
Thanks
Shailesh

Here is an example of building a library from one module with CygWin's gcc:
# Must set JAVA_HOME and LIBRARY_MODULE before
gcc -mno-cygwin -D__int64="long long" -I $JAVA_HOME/include/win32 -I $JAVA_HOME/include -shared -Wl,--kill-at -o $LIBRARY_MODULE.dll $LIBRARY_MODULE.c

Shared library for MyFaces Trinidad

Hello!
I'm having some trouble trying to create a shared library in OC4J 10.1.3.3.0. My goal is to deploy multiple applications that use MyFaces and Trinidad, but using a shared library that contains every JAR required.
This is what I've done so far:
1. I created the directory D:\workspace\oc4j_10.1.3\j2ee\home\shared-lib\sidi\1 and put there every JAR included in MyFaces Trinidad Demo.
2. Edited server.xml and added the following lines:
<shared-library name="sidi" version="1">
<code-source path="*"/>
</shared-library>
3.- Edited the orion-application.xml in each application that needs MyFaces Trinidad support and added the following lines:
<imported-shared-libraries>
<import-shared-library name="sidi" />
</imported-shared-libraries>
When I try to run any application that uses MyFaces Trinidad, I get this error message:
java.lang.IllegalStateException: No Factories configured for this Application. This happens if the faces-initialization does not work at all - make sure that you properly include all configuration settings necessary for a basic faces application and that all the necessary libs are included. Also check the logging output of your web application and your container for any exceptions!
If you did that and find nothing, the mistake might be due to the fact that you use some special web-containers which do not support registering context-listeners via TLD files and a context listener is not setup in your web.xml.
A typical config looks like this;
<listener> <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>
     at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:93)
     at javax.faces.webapp.FacesServlet.init(FacesServlet.java:91)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.loadServlet(HttpApplication.java:2371)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4824)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.findServlet(HttpApplication.java:4748)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpApplication.getRequestDispatcher(HttpApplication.java:2971)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:741)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.3.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
If I add that listener to web.xml, the error changes to this:
9/08/2007 02:37:28 PM org.apache.myfaces.config.FacesConfigurator feedStandardConfig
INFO: Reading standard config org/apache/myfaces/resource/standard-faces-config.xml
9/08/2007 02:37:28 PM org.apache.myfaces.config.FacesConfigurator feedClassloaderConfigurations
INFO: Reading config code-source:/D:/workspace/oc4j_10.1.3/j2ee/home/shared-lib/sidi/1/tomahawk-1.1.6.jar!/META-INF/faces-config.xml
9/08/2007 02:37:29 PM org.apache.myfaces.config.FacesConfigurator feedClassloaderConfigurations
INFO: Reading config code-source:/D:/workspace/oc4j_10.1.3/j2ee/home/shared-lib/sidi/1/trinidad-impl-1.0.1.jar!/META-INF/faces-config.xml
9/08/2007 02:37:31 PM org.apache.myfaces.config.FacesConfigurator feedWebAppConfig
INFO: Reading config /WEB-INF/faces-config.xml
9/08/2007 02:37:31 PM org.apache.myfaces.config.FacesConfigurator logMetaInf
INFO: MyFaces-package : myfaces-api not found.
9/08/2007 02:37:31 PM org.apache.myfaces.config.FacesConfigurator logMetaInf
INFO: MyFaces-package : myfaces-impl not found.
9/08/2007 02:37:31 PM org.apache.myfaces.config.FacesConfigurator logMetaInf
INFO: MyFaces-package : tomahawk-sandbox not found.
9/08/2007 02:37:31 PM org.apache.myfaces.config.FacesConfigurator logMetaInf
INFO: MyFaces-package : tomahawk not found.
If I place the JARs inside each WEB-INF/lib the applications work, but I'm trying to avoid doing this to have smaller EARs when the applications are packaged for deployment in the production servers.
What am I doing wrong? Hope you can help me with this.

Hi Aram,
The default behaviour of OC4J is to NOT run the listeners provided inside the taglibs. As for java server faces, tomahawk and trinidad use taglibs that rely on the listener configured in the tld file
You'd need not only to deploy the "shared library", but also, drop the jars in the $OC4J/j2ee/home/taglibs directory
And, make sure that in your "global-web-application.xml" you have:
<orion-web-app
[... whatever ...]
     jsp-cache-tlds="on"
     jsp-taglib-locations="../taglibs"
>
that means, the attribute "jsp-taligb-locations is defined for the orion-web-app tag. With that, the listener is going to be loaded, and you'd not need to configure it in the web.xml

Create a Library for common code

I want to create a library of common PHP and JavaScript code. How do I do it? The conceptional problem I am having is how can I access this code across separate sites. Dreamweaver makes avail common code, like mysql code to access a database. I want to set up a similar the library for my code.
Thanks for you help.

Here is an example of one Snippet I frequently use. A double click inserts the following code.

<script src="http://code.jquery.com/jquery-latest.min.js"></script>

<link href="http://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.4/jquery.fancybox.css" rel="stylesheet" media="screen">
<script src="http://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.4/jquery.fancybox.pack.js"></script>

<script>
jQuery(document).ready(function() {
$.fancybox(
'<h2>Hi!</h2><p>Your custom message here...</p><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam quis mi eu elit tempor facilisis et neque</p>',
'autoDimensions'    : false,
'width'             : 400,
'height'            : 'auto',
'transitionIn'    : 'elastic',
'transitionOut'    : 'elastic',
'overlayOpacity'    : 0.8,
'speedIn'        :600,
'speedOut'    :400,
'overlayColor'    : '#FFF'
</script>
Or, if you prefer, you could insert those Snippets into a server-side include file.
Nancy O.

How create data type for coulmn name having special characters in IR

hi ,
any idea how to create how to do create data type for coulmn name having special characters

Hi Amit,
Can you ellaborate ?
Actually if you are reading a file(or anything else) which contains special characters, the data type can be created as done for other interfaces. But it is in the adapters that we actually take care of handling these special characters.
ShabZ

How create shared Library for JNI

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