How do I recompile and reload Java source code while `lein repl` is running?

Question

I have a Clojure project, and I\'m using leiningen. I\'m also using tools.namespace to reload Clojure code while running a REPL. If I want to include Java source in the project,

Answer 1

Pure java way

public class MyClassFactory {
   public static MyClass newInstance() {
       URLClassLoader cl =
           new URLClassLoader(new URL[] {getMyClassPath()}) {

           public Class loadClass(String name) {
              if ("MyClass".equals(name))
                 return findClass(name);
              return super.loadClass(name);
          }
       };

     return (MyClass) cl.loadClass("MyClass").newInstance();
  }
}

by this way you can lead the class loader to load classes programmatically.

References

• Classloader Official documentation
• Java Specs
• OnJava