Introduction

Call a Fortran dynamic library (DLL) from Java bean by using JNI/JNA.

Demo (\bin folder)

This demo is allowing the invocation of one or many DLL. JNI, Java Native Interface, is giving access to the C++ code which is encapsulating the Fortran code. As a test, two parameters (XML files) are sent through the FortranExecuter class to the FortranExecuter.dll library. In return, a message is sent back from the library to the java code.

To achieve the operation, the library FortranExecuter.dll should be call by the fortrandll1.dll library.

Content

• Parameters sent by the FortranExecutor.class
  • [IN] (string) : 'c:\processor\incoming\in.xml'
  • [IN] (string) : 'c:\processor\outcoming\out.xml'
  • [OUT] (integer) : 100 (value code 'no error' sent back from the library)
• DLL files
  • FortranExecuter.dll interface that allows to invoke n sub-DLL(s)
  • fortrandll1.dll called by FortranExecuter.dll and which is containing the Fortran code

Test

To test the application,

1. Go to the '\bin' folder
2. Copy the FortranExecuter.dll DLL to this place : 'C:\FortranExecuter.dll'
3. Start run.bat

Note, as a test an OK message code (100) should be returned by the library.

Requirements

You might need a few things for your environment (PATH) such as,

• Java JDK 8
• Compilers,
  • Gnu gfortran (MinGW)
  • Gnu g++ (MinGW)

Licence

Copyright (C) 2023, John Van Derton

Please read the 'LICENCE' file for more information.

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