OCP Java 8 Study Guide Ch. 9 Errata (Sybex)

[Donald Colvin]

A few more minor possible corrections for Ch. 9:

1. Page 482 middle of page: food.jpeg in the text should be food.jpg for consistency with the example code preceding the text
2. Page 486 second paragraph: "this leaves the files in the future in an ambiguous state" -- was "future" meant to be "directory"?
3. Page 500 question 10 answer E: "The metadata of the monkey.txt will" should be "The metadata of monkey.txt will"
4. Page 569 question 6 explanation: Predictate should be Predicate

Thanks!

[Jeanne Boyarsky]

Agreed and logged all. Thanks Donald!

[Weizheng Li]

Hi

For question 21 of chapter8, I think the correct answer is G since tail is an Object type and the class Object is not serializable.
Setting a value to tail with setters and then trying to serialize will throw the NotSerializableException

[Jeanne Boyarsky]

Weizheng,
Welcome to CodeRanch!

tail is null in the code given. There's no setters coded nor a comment saying the getters/setters were omitted. So the values initialized in the object in the quesiton are all you get. Since null can be serialized, the answer in the book is correct.