How to create jni header file with IntelliJ IDEA

Question

I want to create the head file in IntelliJ IDEA. This is the way I do it:

file>setting>Tools>External Tools

then I click +, specify the title and set the parameters as follow:

Program: C:\Program Files\Java\jdk1.8.0_25\bin

Parameters: -d C:\Users\Administrator\Documents\Visual Studio 2013\Projects\JniExampleLibrary -jni Example.JniExample

Working Directory: C:\Program Files\Java\jdk1.8.0_25\bin

but after clicking ok, there is no JniExample.h file in the path defined above with -d

Would you please tell me what is the problem with it?

Thanks in advance

Answer 1

Here are the IntelliJ IDEA settings I use to generate the .h file: (This applies to IDEA version 12.1.6, probably similar in other versions)

1. File->Settings->External Tools
2. Click the + button for the "Edit Tool" dialog
3. The following are the form name/value pairs I used:
   • Name: javah
   • Group: Java
   • Description: Java Native Interface C Header and Stub File Generator
   • Options: Check All
   • Show in: Check All
   • Tool Settings...
   • Program: $JDKPath$\bin\javah.exe
   • Parameters: -jni -v -d $FileDir$ $FileClass$
   • Working directory: $SourcepathEntry$
4. Click OK, Click OK
5. Navigate to your java class with the native method
6. With the java class being shown in the editor, go to Tools->Java->javah
7. Notice the .h file that was generated in the same directory as your class.

Answer 2

I am using Java 11 (OpenJDK) to compile, so I do not have javah available.

Since now the option to create header files is included in javac, I added it as an compiler option.

1. File->Settings->Build, Execution, Deployment->Compiler->Java Compiler
2. In "Additional command line parameters" add: -h YourOutDir

(IntelliJ Community 2019.2, other versions should be similar)

Example:

-h C:/Development/Java/YourApp/cpp

I did not have any luck with "-h $FileDir$" or other macro commands of IntelliJ.