Strategy for registering classes with kryo

Question

I recently discovered the library kryonet, which is super awesome and fits my needs excellently.

However, the one problem that I am having is developing a good str

Answer 1

Classes may come from different places such as disk, network, memory (dynamically generated). Therefore, obtaining information about classes to be registered with Kryo has to be handled separately for each specific case.

If you can read classes from a jar file then the following snippet should get you started.

private static List<Class<?>> getFromJarFile(final String jar, final String packageName)    throws ClassNotFoundException, IOException {
    final List<Class<?>> classes = new ArrayList<Class<?>>();
    final JarInputStream jarFile = new JarInputStream(new FileInputStream(jar));
    JarEntry jarEntry = null;
    do {
        jarEntry = jarFile.getNextJarEntry();
        if (jarEntry != null) {
            String className = jarEntry.getName();
            if (className.endsWith(".class")) {
                className = className.substring(0, className.lastIndexOf('.')); // strip filename extension
                if (className.startsWith(packageName + "/")) {  // match classes in the specified package and its subpackages       
                    classes.add(Class.forName(className.replace('/', '.')));
                }
            }
        }
    } while (jarEntry != null);
    return classes;
}