A ClassLoader loading remote java class via WebSocket.
Deploy ClassProvider to JSR-356 container, e.g. undertow, tomcat.
Use class loader as following:
ClassLoader cl = new WebSocketClassLoader("ws://class-provider-host:port");
Class<?> hogeClass = cl.loadClass("org.example.HogeHoge", true);            class binary format
        +-----------------------------------------------+
        v                                               |
+----------------------+  loadClass request     +---------------+
|   Thin Application   |  (WebSocket)           | ClassProvider |
| WebSocketClassLoader | ---------------------> |               |
+----------------------+                        +---------------+
Apache License 2.0 (c) 2014-2017 Yoshitaka Kawashima
