access private field with reflection

    // private field access

    public static Object private_get(Object o, String name, Object oDefault) {
        try {
            Field f = o.getClass().getDeclaredField(name);
            f.setAccessible(true);
            return f.get(o);
        } catch ( Exception e ) {
        }
        return oDefault;
    }

    public static void private_set(Object o, String name, Object v) {
        try {
            Field f = o.getClass().getDeclaredField(name);
            f.setAccessible(true);
            f.set(o, v);
        } catch ( Exception e ) {
        }
    }

    public static Object private_get(Object o, String name) {
        return private_get(o, name, null);
    }

    public static int private_get_int(Object o, String name) {
        return (Integer) private_get(o, name, (Integer) 0);
    }

    public static void private_set_int(Object o, String name, int v) {
        private_set(o, name, (Integer) v);
    }

    public static boolean private_get_bool(Object o, String name) {
        return (Boolean) private_get(o, name, (Boolean) false);
    }

    public static void private_set_bool(Object o, String name, boolean v) {
        private_set(o, name, (Boolean) v);
    }