1) to providing certain packages → to provide certain packages

1.4) should the two equals have () (aka equals()) or is there a convention not to use () for equals?

1.8) Add constants for its field → Add constants for its fields

1.10) The comment for update() appears twice and is then also used a third time erroneously above get() (although the copy above get() appears to have been partially modified to partially apply to get())