reflectionCode.java

    private static void testMethods() {
        
        // need to have 'org.reflections:reflections:0.9.10'
        // can dowload from here gist.github.com/hepin1989/5026900
        List<ClassLoader> classLoadersList = new LinkedList<ClassLoader>();
        classLoadersList.add(ClasspathHelper.contextClassLoader());
        classLoadersList.add(ClasspathHelper.staticClassLoader());
        Reflections reflections = new Reflections(new ConfigurationBuilder()
                .setScanners(new SubTypesScanner(false /* don't exclude Object.class */), new ResourcesScanner())
                .setUrls(ClasspathHelper.forClassLoader(classLoadersList.toArray(new ClassLoader[0])))
                .filterInputsBy(new FilterBuilder().include(FilterBuilder.prefix("ru.varren"))));
        Set<Class<?>> allClasses =
                reflections.getSubTypesOf(Object.class);

        HashMap<String, MethodInfo> map = new HashMap<>();

        System.out.println("allClasses " + allClasses.size());
        for (Class c : allClasses) {
            for (Method method : c.getDeclaredMethods()) {
                String key = c.getName() + "." + method.getName();
                if (!map.containsKey(key)) {
                    map.put(key, new MethodInfo(c));
                }
                MethodInfo methodInfo = map.get(key);
                methodInfo.methods.add(method);
            }
        }
        for (String key : map.keySet()) {
            MethodInfo info = map.get(key);
            if (info.methods.size() > 1) {
                System.out.println(key + " : " + info.methods.size());
            }
        }
    }


    public static class MethodInfo {
        public MethodInfo(Class fromClass) {
            this.fromClass = fromClass;
        }

        Class fromClass;
        ArrayList<Method> methods = new ArrayList<>();
    }