Help me writing .cpp and .h file to run any ffmpeg command from .java file

Hi, 
Actually I have followed the documents and successfully generated output files. 
Please help me writing .cpp and .h file (JNI method) that can take any ffmpeg commands from java class. For example array of this command 
ffmpeg -y -I input.mp4 -codec copy -sn -hls_list_size 0 -f hls output.m3u8 
and can return output as 0 if success and other integer value if failed. 