Errata

The sentence starting with "The conservative approach..." and ending with "...large user base" is a fragment (no verb). I think the author probably meant to use "is" after the word "taken".

The word "discuss" is printed as "2discuss".

"you;re" should be "you're"

The variable "origininside" should probably be renamed to "insideorigin", or better, "insideOrigin" (camelCase).

The words

"the Liskov principle, which we will meet later"

should probably read instead

"the Liskov principle, which we will see in Chaper X".

where X is the Chapter where it is discussed. The term "Liskov" is not in the index, so I cannot tell where it is described without reading the rest of the book.

"an SportsCar" should be "a SportsCar"

"Chapter 4 for more details about compile-time and runtime type" should say "types" instead of "type".

"You should avoided it when writing new code" should read "You should avoid it when writing new code". (s/avoided/avoid)

The verb in "...or normally just called enums and annotations" does not line up with the subject "They" in the same sentence.

Solution 1: replace "normally just called" with "simply", like this:

"...or simply enums and annotations".

Solution 2: replace "or" with "but are", like this:

"...but are normally just called enums and annotations."

s/anticated/anticipated

Also, the parenthetical "(frequently referred to just as lambdas)" in this sentence does not parse well. This version is probably better:

"One of the most eagerly anticipated features of Java 8 was the introduction of lambda expressions, or simply 'lambdas'."

This sentence has an errant verb "coexist":

"This means that they don't really have a completely independent existence as an entity, and only live in coexist."

Maybe replace "in coexist" to "to coexist"?

In the phrase "...been taken over by lambda expressions and the use of...", add a comma after "expressions", like this: "expressions, and"

As a general note, there are a lot of run-on sentences in the areas beginning with "Functional Programming" on page 173. E.g., on page 173, there is "Lambda expressions greatly simplify that syntax, and so it is only natural that more developers will be seeking to use aspects of functional programming in their Java code, now that it is considerably easier to do so." This could be shortened to just "Lambda expressions greatly simplify that syntax."

"and is now on a par" should be "is now on par"