How to unload .dll from java application.

Hi,
I want to unload .dll (Library) for an specific event (Custom event).
Thanks in advance.

You can't.
The closest that you can get is to create another dll that loads the first. And have a method that allows you to unload it.

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How to invoke dll from Java applications

Hello Friends,
I am new to JNI application and I never tested it before. Now I have to interact with dll�s
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There are two dll�s called
1) Client side dll - to make the connection with server side dll.
2) Server side dll � to deal all server side operations.
Now, I have to write the interface in java to interact with client side dll and I have to display the values on browser.
If any one did this kind of application give guidance for me
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Selvin.

look for those applications/keywords
JNI (java native interface)
jactivex

How to call webservice from Java application

Hi XI gurus
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Hi,
If your JAVA Application is Web based application, you can expose it as Webservice.
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How to call javascript from java application

How can we call a function written in javascript from java application (core java not applet)? How will java identify javascript?
Is there any such options ?

Try creating a page called launcher.html (for example). That does this:
<html>
<head>
<script language="javascript">
windowHandle=window.open("http://www.javasoft.com", "", "height=700,width=1000,status=no,scrollbars=yes,resizable=yes,toolbar=no,menubar=no,location=no,top=5,left=5");
</script>
</head>
</html>Now you launch IE (or whatever) with this page using the Runtime class. After x seconds (after the second window has been launched) try killing the process. Hopefully it will kill the original window you opened and not the window you popup (the one without toolbars etc)
It might kill both windows but I can't be bothered to test it. If it does you'll have to try and find a workaround.

How to call dll from Java

Hi everybody,
I am trying to call a dll from my java application. Pls tell me how to do it, I seached and found JNI. Is it true
pls help me and send me some examples
Thank you and have a nice day

java_and_me wrote:
I am trying to call a dll from my java application. Pls tell me how to do it, I seached and found JNI. Is it trueYes, it is true. JNI is the way to go. You'll probably have to write some C code on your own as well, as the DLL is unlikely to be in the format expected by Java already.
pls help me and send me some examplesOf course. [Here you are|http://www.lmgtfy.com/?q=JNI+tutorial].

JDeveloper Team - How to print Barcodes from java application

We are developing an Inventory based application in JDeveloper 3.2.2/Oracle 8i/Netscape Enterprice web server on Windows NT platform. The application is developed in swing technology.
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null

Try creating a page called launcher.html (for example). That does this:
<html>
<head>
<script language="javascript">
windowHandle=window.open("http://www.javasoft.com", "", "height=700,width=1000,status=no,scrollbars=yes,resizable=yes,toolbar=no,menubar=no,location=no,top=5,left=5");
</script>
</head>
</html>Now you launch IE (or whatever) with this page using the Runtime class. After x seconds (after the second window has been launched) try killing the process. Hopefully it will kill the original window you opened and not the window you popup (the one without toolbars etc)
It might kill both windows but I can't be bothered to test it. If it does you'll have to try and find a workaround.

How to access .asmx from java application

Hi All,
I want to access .asmx file using java application. I am using Eclipse IDE and created
some samples from this url: http://www.eclipse.org/webtools/jst/components/ws/M5/tutorials/BottomUpWebService.html
I got the Soap request and response format from wsdl file. But, i don't know access
the .asmx file. If u have any samples or give some suggestions that will be helpful for me to
proceed

Try creating a page called launcher.html (for example). That does this:
<html>
<head>
<script language="javascript">
windowHandle=window.open("http://www.javasoft.com", "", "height=700,width=1000,status=no,scrollbars=yes,resizable=yes,toolbar=no,menubar=no,location=no,top=5,left=5");
</script>
</head>
</html>Now you launch IE (or whatever) with this page using the Runtime class. After x seconds (after the second window has been launched) try killing the process. Hopefully it will kill the original window you opened and not the window you popup (the one without toolbars etc)
It might kill both windows but I can't be bothered to test it. If it does you'll have to try and find a workaround.

How to set classpath from java application

in my ian using Runtine.exec();
here the code
String cmd[]={"cmd.exe","/c","path=C:\\j2sdk1.4.2_03\\bin\\;"};
          Runtime runtime = Runtime.getRuntime();
          Process setPathProc = runtime.exec(cmd);
          Process proc = runtime.exec("javac "+path+"\\"+clsname+".java");
it working when ian running the application class from command, but when iam creating a jar file and running it was not working,,
any suggestion

hi kaj,
my problem is ,
In my application i have to compile one java file and
create class file for that java file, here before
creating i have to set class path, am i right?
so in my program only first i have to set class path,
and later i have to compile, so, in my code i have
mentioned the details about to set class path and
compile the program, r u getting what iam telling,
please help me, if u know anything,
thanks

How to execute any cmd command from java application?

Hi all,
How to execute or call any command of cmd from java application??
Is there any method to do so??
Or, is it possible to do it using Runtime.exec() ??? And if so, how to use it, please explain with ab example...
I'll highly appreciate....
Thank you.

If google would be the best option, then I would not be on Sun's forums and I would not have asked experts like you, sir !! :-)
Neway, I got the solution from PhHein !!
Good link indeed..
Cheers..

Can anybody tell me how to send/receive the sms from java application

Hi All,
Can any body tell me, how to send/receive the sms from java application to mobile phones.
I have installed the jsms engine and when i try to connect to the mobile device ,the jsms server is giving
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Cannot connect to GSM Device, error : -11

Which jsms? Google finds several.
Try the website where you downloaded it.

Can any body tell me, how to send/receive the sms from java application

Hi All,
Can any body tell me, how to send/receive the sms from java application to mobile phones.
I have installed the jsms engine and when i try to connect to the mobile device ,the jsms server is giving
the following error.
Cannot connect to GSM Device, error : -11

The best place to ask your question is at the JSMS website, forum or mailing list since this is no error that directly comes from a class belonging to the core Java classes.

Can we run EXE file/ Another Java Program from Java Application? How?

Can we run EXE file and another java program from java application?
Thanks in advance

Example running adobe acrobat
String command = "C:\\Program Files\\Adobe\\Acrobat 5.0\\Reader\\AcroRd32.exe /t "+selectedDocument+" \\\\CONTROL\\HP LaserJet 4L";
Runtime rn = Runtime.getRuntime();
Process process = rn.exec(command);
process.waitFor();rykk

Calling back c++ method in an exe (not a dll) from java?

Hi all,
I have to make an hybrid C++/java from an existing C++
application that compiled is a big single exe not a dll.
I'm running under win32.
The application consists of several windows. The hybrid
will have widows in C++ and some in java. They have the
same menu and tool bar. In the C++, there are some
callbacks called when a button is pressed. How to call
these callback from java given the fact that the JVM and
the java classes are launched by the exe file.
I know how, from C++, start JVM and call my java window.
I also know how to call a C++ method that is in a dll from
java. It's from the tutorial
http://java.sun.com/docs/books/tutorial/native1.1/index.html
But I don't know how to call a C++ method that is in in an
exe which has launch a JVM from an object running in this
JVM.
Is there somewhere an example like this?
Thanks,
Xavier.

Thanks this helped.
For those who want a complete example, here it is:
Tested on XP, java 1.4.2, VC++ 6.0.
************ File invoke.cpp *****************************
#include <stdlib.h>
#include <jni.h>
#ifdef _WIN32
#define PATH_SEPARATOR ';'
#else /* UNIX */
#define PATH_SEPARATOR ':'
#endif
#define USER_CLASSPATH "." /* where Prog.class is */
void JNICALL displayHelloWorld(JNIEnv *env, jobject obj)
    printf("Hello world: made by printf from C++\n");
    return;
void main() {
    JNIEnv *env;
    JavaVM *jvm;
    JavaVMInitArgs vm_args;
    jint res;
    jclass cls;
    jmethodID mid;
    jstring jstr;
    jobjectArray args;
    char classpath[1024];
     int result;
    /* IMPORTANT: specify vm_args version # if you use JDK1.1.2 and beyond */
     JavaVMOption options[3];
     options[0].optionString = "-verbose:gc";
     sprintf (classpath, "-Djava.class.path=%s", USER_CLASSPATH);
     options[1].optionString = classpath;
     options[2].optionString = "-Djava.compiler=NONE";
     vm_args.options = options;
     vm_args.nOptions = 3;
     vm_args.ignoreUnrecognized = JNI_TRUE;
        vm_args.version = JNI_VERSION_1_4;
     /* IMPORTANT: Note that in the Java 2 SDK, there is no longer any need to call
      * JNI_GetDefaultJavaVMInitArgs. It causes a bug
    /* Append USER_CLASSPATH to the end of default system class path */
    /* Create the Java VM */
    res = JNI_CreateJavaVM(&jvm,(void**)&env, &vm_args);
    if (res < 0) {
        fprintf(stderr, "Can't create Java VM\n");
        exit(1);
    cls = env->FindClass("mypackage/Prog");
    if (cls == 0) {
        fprintf(stderr, "Can't find mypackage/Prog class\n");
        exit(1);
   JNINativeMethod nm;
   nm.name = "displayHelloWorld";
   /* method descriptor assigned to signature field */
   nm.signature = "()V";
   nm.fnPtr = displayHelloWorld;
   env->RegisterNatives(cls, &nm, 1);
    mid = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
    if (mid == 0) {
        fprintf(stderr, "Can't find Prog.main\n");
        exit(1);
    jstr = env->NewStringUTF(" from C++! calleded by C++, using argument from C++ but java method");
    if (jstr == 0) {
        fprintf(stderr, "Out of memory\n");
        exit(1);
    args = env->NewObjectArray(1,
                        env->FindClass("java/lang/String"), jstr);
    if (args == 0) {
        fprintf(stderr, "Out of memory\n");
        exit(1);
    env->CallStaticVoidMethod(cls, mid, args);
    jvm->DestroyJavaVM();
}********************* File ./mypackage/Prog.java **************************
package mypackage;
public class Prog {
       public native void displayHelloWorld();
    public static void main(String[] args) {
        System.out.println("Hello World" + args[0] +"\n");
        Prog prog = new Prog();
        prog.displayHelloWorld();
        System.out.println("(called from java)");
        System.out.println("\nSo to sumurize:");
        System.out.println(" -1 Starting point is an exe (not DLL, there is no DLL) so C++ code");
        System.out.println(" -2 From C++ call java method using argument from C++");
        System.out.println(" -3 From java, that was launched by the exe, call to");
        System.out.println("    a native using the RegisterNatives in C++\n");
        System.out.println("You got a bidirectional example with as starting point");
        System.out.println("a single exe, launching JVM, loading class call back C++!");
}******************* Command line for all ****************************************
javac mypackage/Prog
cl -I"D:\Program Files\j2sdk1.4.2_03\include" -I"D:\Program Files\j2sdk1.4.2_03\include\win32" -MT
invoke.cpp -link D:\PROGRA~1\j2sdk1.4.2_03\lib\jvm.lib
(Remark, the last path is using the short name for "Program Files" because with the blank
even adding double quotes result into an error)
You must have jvm.dll in your path for me it's Path=D:\Program Files\j2sdk1.4.2_03\jre\bin\client;
Then simply call invoke and see the result. :-)

Storing chinese in client odb from java application

Hi all,
first i like to thank Greg Rekounas for his wonderful support and contribution....
This is my server setup.
os-windows 2000 sp4
db-oracle 9ir2 (unicode with AL32UTF8 charset)
lite-oracle10g r2 (with latest patchset)
nls_lang- AMERICAN_AMERICA.AL32UTF8
storing and retriving chinese in oracle 9i database from isql*plus works.
lite configuration.
1. In $OLITE_HOME\mobile_oc4j\j2ee\mobileserver\applications
\mobileserver\setup\common\webtogo\webtogo.ora file edited the JAVA_OPTION
to:
JAVA_OPTION=-Djava.compiler=NONE -Dfile.encoding=UTF8
2. In $OLITE_HOME\mobile_oc4j\j2ee\mobileserver\applications
\mobileserver\setup\dmc\common\win32.inf file, added the following:
a. In the <file> section, added the following:
<item>
<src>/common/win32/olilUTF8.dll</src>
<des>$APP_DIR$\bin\olilUTF8.dll</des>
</item>
b. In the <ini> section, added the following:
<item name='POLITE.INI' section='All Databases'>
<item name="DB_CHAR_ENCODING">UTF8</item>
</item>
<item name='POLITE.INI' section='SYNC'>
<item name="DB_ENCODING">UTF8</item>
</item>
published the application developed in java using packaging wizard.
downloaded the client in the pc with the following config:
windows 2000 (english)
nls - default.
installed chinese language support.
tried to access 9i database from isql*plus and stored & viewed chinese characters sucessfully.
tried to store a chinese character from java application in the client odb -- failed.
values are getting inserted from the application but when i view them back it shows & # 2 6 0 8 5 ; (i have included a space in between all 8 characters.
but when i copy this no and paste in msword it shows 日(chinese character)
i dont know the exact reason for the above scenerio...................
Also please help me on this too.......
why can i store & view chinese characters sucessfully in isql*plus from the client machine while i cannot do the same on client odb from java application even though the lite config are done to support utf8?
is anything i left out?
should i do any codes changes in java?(java application is of verision jdk1.4_13)
Thanks,
Ashok kumar.G

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How to send attachments using java application and outlook

Hi ,
I created an application in java which is as
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Last time I checked, SMS was a service between carriers and doing SMS yourself was really tricky. Some services existed to let you do it but as I recall they wanted non-trivial money.
However, most phone carriers provide an email-to-SMS bridge of some kind.
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However, this is from memory, and a little out of date, so I could be entirely wrong. Hope it helps anyway.

How to unload .dll from java application.

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