Java::JavaLang::IncompatibleClassChangeError: Implementing class
	from java.lang.ClassLoader.defineClass1(Native Method)
	from java.lang.ClassLoader.defineClass(ClassLoader.java:760)
	from java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	from java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	from java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	from java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	from java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	from java.security.AccessController.doPrivileged(Native Method)
	from java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	from java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	from java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	from com.mongodb.MongoClientOptions$Builder.<init>(MongoClientOptions.java:758)
	from com.mongodb.MongoClientURI.<init>(MongoClientURI.java:158)
...

require 'mongo'
mongo_client = Mongo::Client.new(["localhost:27017"])
require './bson-3.2.2.jar'
require './mongodb-driver-core-3.2.2.jar'
require './mongodb-driver-3.2.2.jar'
com.mongodb.MongoClient.new("localhost")