I am trying to add the google or-tools library within my intellij gradle project.

Unfortunately, I did not find any maven/gradle library to install.

At the moment I just downloaded the java libraries from the following link:

https://developers.google.com/optimization/install/java/windows

and copy pasted the directory in my project.

In the directory the following java libraries are found:

• com.google.ortools.jar
• jniortools.dll
• Knapsack.jar
• ortools.lib
• protobuf.jar
• RabbitsPheasants.jar
• SimpleLpProgram.jar
• SimpleMipProgram.jar
• SimpleSatProgram.jar
• Tsp.jar
• Vrp.jar

Within my build.gradle file I used the following code:

plugins {
id 'java'
id 'application'
}

group 'ORScheduling'
version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

applicationDefaultJvmArgs = ["-Djava.library.path=...\\ORSchedulingGradle\\lib"]

repositories {
     mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
 }

The code is running, but I am getting the following error:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.protobuf.UnsafeUtil(file:/C:.../ORSchedulingGradle/lib/protobuf.jar) to field 
java.nio.Buffer.address
WARNING: Please consider reporting this to the maintainers of com.google.protobuf.UnsafeUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

In addition every time I am making a change in gradle and it automatically updates I have to manually import again the directory with all the downloaded java libraries.

Any idea how to avoid the warnings?