Set up JDK and JNI on MacOs

gistfile1.txt

Follow the steps here
https://mkyong.com/java/how-to-set-java_home-environment-variable-on-mac-os-x/
or do the following

1. Get location of default jdk
    /usr/libexec/java_home
2. Find all installed JDKs
    /usr/libexec/java_home -V
3. Run a specified JDK. Note you can pick any of the versions already in you system
    /usr/libexec/java_home -v1.8
4. Open the ~/.zshenv
    nano ~/.zshenv
5. Add the following content. Also here you can use any versions
    export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
6. Source the file
    source ~/.zshenv
7. print the $JAVA_HOME
    echo $JAVA_HOME
8. Add this line in the cmakelist above the add jni line 
    set(JAVA_INCLUDE_PATH "$ENV{JAVA_HOME}/include")
    set(JAVA_AWT_INCLUDE_PATH "$ENV{JAVA_HOME}/include")
    set(JAVA_INCLUDE_PATH2 "$ENV{JAVA_HOME}/include/darwin")
    set(JAVA_AWT_LIBRARY "$ENV{JAVA_HOME}/lib/libjawt.dylib")
    set(JAVA_JVM_LIBRARY "$ENV{JAVA_HOME}/lib/server/libjvm.dylib")