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Using JNI (to get C++ routines) with Java : NetBeans IDE 7.1.2

From clusardi2k@aol.com
Newsgroups comp.lang.java.programmer
Subject Using JNI (to get C++ routines) with Java : NetBeans IDE 7.1.2
Date 2012-06-14 12:12 -0700
Organization http://groups.google.com
Message-ID <acb0931f-d1a6-498f-b413-79377fa8db05@googlegroups.com> (permalink)

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Hello,

I want to call a series of C++ routines from java using the Java Native Interface. The IDE that I'm using is NetBeans 7.1.2.

Below is a two part description. The first part is background. It explains how I was told to setup two jar files that refer to my C++ routines. The second part is the wrong part. The second part is my feeble attempt at changing my code so that it invokes a routine in the C/C++ library.

(Part 1)
I setup NetBeans to use 2 dot jar files to refer to my C++ routines. I was told to follow these steps. The steps that I followed to do this are. 

Start NetBeans, highlight the name of the current project, right click on it, select Add Library, select Create..., name the library MY_TEST, click ok, press the "Add JAR/Folder..." button, and select the two jar files that were given to me.

The 2 jar files now appear on the left side of the IDE under MY_TEST.

(Part 2)
0) FYI: There is only one class in this simple dot java program. 
1) I put a call to a method (my_test) listed in one of the jar files (my_test does not exist anywhere else),
2) in the same dot java file, I created the following routine prototype for my_test:

 "private native void my_test()", and 

3) at the start of the class (in the dot java program) add the lines:

    static {
      System.load ("C:\\User_name_0\\dist\\name_of_jar_file1.jar");
      System.load ("C:\\User_name_0\\dist\\name_of_jar_file2.jar");
    } 

This compiles, but I get the following runtime error:

java.lang.UnsatisfiedLinkError: C:...\dist\lib\JavaGxpApiClient.jar: Can't load this .dll (machine code=0x23) on a IA 32-bit platform

What do I do. Would creating a dot h file help.

Thanks,
First Time JNI user

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Using JNI (to get C++ routines) with Java : NetBeans IDE 7.1.2 clusardi2k@aol.com - 2012-06-14 12:12 -0700

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