Errata for OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide - page 491

[Guillaume Bailly]

Hi,

At the beginning of the section Listing Directory Contents on page 491, it says

...and returned a list of File objects...

To be precise, I think this should be

...and returned an array of File objects...

Kind regards,
Guillaume

[Jeanne Boyarsky]

Agreed and logged. This one is funny. I have a bad habit of saying "list" when I mean "list or set or array" when I talk to people. Scott wrote the particular line you quoted so I guess we share that habit!

I confused a candidate at an interview with that once. She didn't know the difference between an array and list. So my using the wrong word totally threw her!

[Scott Selikoff]

Notice we did not use the word "List" (note the uppercase), therefore we were not referring to a specific Collections class.

Like Jeanne, I sometimes use "list" (note the lowercase) to refer to both arrays and List objects. It's probably held over from my more theory-heavy days at Cornell, where lists and arrays were conceptually the same thing, and could be interchangeably. In the context of Java, I can see how this might be confusing. In general, I try to use "List" to refer to the specific collections class.

[Guillaume Bailly]

Hi Scott,

No problem. Everybody got the point I think. Just thought it might be confusing for some of us.

Regards,
Guillaume