ClassLoad, reload, carregar dinovo, relfection, o que fazer?

//you have to tell the loader where to find the class since its going to have to do this from scratch - without the help of system loader.

String class_path = System.getProperty(“java.ext.dirs”) + System.getProperty(“file.separator”) + “comm.jar”;

System.out.println(class_path);

URL class_path_url  = new File(class_path).toURL();	

URLClassLoader tempLoader = new URLClassLoader(new URL[]{class_path_url}); //create a new URLClassLoader

Method findClass_Method = URLClassLoader.class.getDeclaredMethod(“findClass”, new Class[]{String.class}); //get the method findClass(String name)

findClass_Method.setAccessible(true); //unprotect the method

Class loaded = (Class) findClass_Method.invoke(tempLoader, new Object[]{“javax.comm.CommPortIdentifier”} ); //call it as if it was the member method of a new URLClassLoader object. If this call succeeds, it should return the Class object for the class. 	

//use the class by extracting its methods and invoking them by using reflection.

//loaded.getDeclaredMethod("finalize", new Class[0]).invoke(null); //now that you have the CommPortIdentifier class object, you can call its methods
           
           lista=(Enumeration)loaded.getDeclaredMethod("getPortIdentifiers", new Class[0]).invoke(null); //now that you have the CommPortIdentifier class object, you can call its methods
           lista=(CommPortIdentifier.getPortIdentifiers());
           loaded = null; //release the class to avoid memory leak