https://github.com/jruby/jruby/jruby-core: JRuby is the effort to recreate the Ruby (https://www.ruby-lang.org) interpreter in Java. (JRuby)
  • headius
  • enebo
  • wmeissner
  • BanzaiMan
  • mkristian 
package org.jruby.util;

public interface ClassDefiningClassLoader {

    Class<?> defineClass(String name, byte[] bytes);

    Class<?> loadClass(String name) throws ClassNotFoundException;

    default ClassLoader asClassLoader() { return (ClassLoader) this; }

}