从C代码创建Java库（jar）

Question

Greetings,

I am trying to use this api: http://code.google.com/p/vavi-sensor/

for using the macbook accelerometer in Java code.

I am put the .c files into my library but I am still getting a java.lang.UnsatisfiedLinkError: no SmsWrapper in java.library.path

I assume this is because it's still in .c files while all my other libraries are .jar. How can I go about getting this into a jar or other loadable format (jnilib, etc)? thanks

Answer 1

You need to read about JNI or JNA . JNA is easier, but you still need to compile the C as a library, then follow the JNA documentation .

Answer 2

The .c files are just source code. You need them compiled for the appropriate machine, packaged into a shared object library, and then referenced by native methods in a wrapper Java class.

The JNI tutorial has all the information you'll need, although it doesn't go into detail about the non-Java side of things as most people doing this already know about programming in C and building shared object libraries.