com.javonet.core.handler.loadlibrary.JarAdder Maven / Gradle / Ivy

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Javonet allows you to reference and use modules or packages written in (Java/Kotlin/Groovy/Clojure, C#/VB.NET, Ruby, Perl, Python, JavaScript/TypeScript) like they were created in your technology. It works on Linux/Windows and MacOS for applications created in JVM, CLR/Netcore, Perl, Python, Ruby, NodeJS, C++ or GoLang and gives you unparalleled freedom and flexibility with native performance in building your mixed-technologies products. Let it be accessing best AI or cryptography libraries, devices SDKs, legacy client modules, internal custom packages or anything from public repositories available on NPM, Nuget, PyPI, Maven/Gradle, RubyGems or GitHub. Get free from programming languages barriers today! For more information check out our guides at https://www.javonet.com/guides/v2/

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package com.javonet.core.handler.loadlibrary;

import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;

public class JarAdder {
    public static void addJarToClasspath(File jar) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, MalformedURLException {
        // Get the ClassLoader class
        ClassLoader cl = ClassLoader.getSystemClassLoader();
        Class clazz = cl.getClass();

        // Get the protected addURL method from the parent URLClassLoader class
        Method method = clazz.getSuperclass().getDeclaredMethod("addURL", URL.class);

        // Run projected addURL method to add JAR to classpath
        method.setAccessible(true);
        method.invoke(cl, jar.toURI().toURL());
    }
}