SonarCloud instance reports the failures here:
 "Use try-with-resources or close this "URLClassLoader" in a "finally" clause."
 "Use try-with-resources or close this "JarFile" in a "finally" clause."

    private Multiset<String> processJAR(String jarName) {
        Multiset<String> shapes = new Multiset<>();
        try {
            URLClassLoader cl = URLClassLoader.newInstance(new URL[]{new URL("jar:file:" + jarName + "!/")});
           JarFile jarFile = new JarFile(jarName);