java-native-interface

Run

The simplest way:

$ ./gradlew run

Other possibilities:

$ cd src/main/java
$ ./compile.sh

Compile Java program and generate header file:

$ cd src/main/java
$ javac -h ../../dotproduct/c com/hania/DotProduct.java com/hania/MainFrame.java

Compile C program:

$ gcc -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/darwin" -dynamiclib -o com/hania/libdotproduct.dylib ../../dotproduct/c/com_hania_DotProduct.c

Run the Java program:

$ java -Djava.library.path=./com/hania/. com/hania/MainFrame

$ ./gradlew test

Linking jni.h requires environmental variable JAVA_HOME to be set.

Type in CLI path to your JDK:

$ export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdkX.X.X_X.jdk/Contents/Home

or save to ~/.bash_profile:

$ echo "export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdkX.X.X_X.jdk/Contents/Home" >> ~/.bash_profile
$ source ~/.bash_profile