How can i do to get all class of a given package with guava

I am working on a maven projet and i added to my pom.xml file the guava dependency. I want to get all class of a given package and it will be better if i can get the list of package too. So i tried with this :

 public void getClassOfPackage() {

    final ClassLoader loader = Thread.currentThread()
            .getContextClassLoader();
    try {
        for (final ClassPath.ClassInfo info : ClassPath.from(loader)
                .getTopLevelClasses()) {
            if (info.getName().startsWith("org.mypackage")) {
                final Class<?> clazz = info.load();
                System.out.println(clazz.getName());
            } else {
                System.out.println(loader.getClass().getName());
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

}

public static void main(String[] args) {
    new ClassOfPackage().getClassOfPackage();
}

but it gives me that :

 sun.misc.Launcher$AppClassLoader
sun.misc.Launcher$AppClassLoader
sun.misc.Launcher$AppClassLoader...