[comment.update] Update or remove obsolete comments

contents ... Commenting the code ... Update or remove obsolete comments

If a comment is out of date spend a few seconds to update or remove it. Don't leave it there to confuse the next person.

// The integer ID of the customer

// Initially set to -1 to show it has not yet been loaded with data

String customerId = null;

Update it before it confuses the next person who takes comments at face value:

// The String ID of the customer

// When null it means “not yet loaded with data”

String customerId = null;