About Question enthuware.ocpjp.v8.2.1836 :

[badbishop]

I think there is an error, as my answer (considered wrong) matches the explanation to the answer considered "correct". Please see the screenshot attached.

There is a missing closing bracket in the explanation: "Map<K,List<T>>"

[admin]

The answer is correct. The output contains C#, C# because the toString method of Course returns id+" "+category;

[jolique]

Why answer is option 2? Shouldn't it be option 1!? But it's also incorrect though since there's no enclosing brackets.

[admin]

Why do you think option 1 should be the correct answer and not option 2? Please go through the explanation under option 2. Also, try running the code.

[Mushfiq Mammadov]

Hi.
It is very interesting for me, why output is

Code: Select all

[C# C#] 
[OCAJP Java, OCPJP Java, OCEJPA Java]

not

Code: Select all

[OCAJP Java, OCPJP Java, OCEJPA Java]
[C# C#]

?

[admin]

That is as per the iteration order of the Map implementation returned by the collector.

[jme_chg]

That is as per the iteration order of the Map implementation returned by the collector.

so it cannot be determined ahead of time right?

[dameest]

Man, you did trick us. Hat down to you for this question. This question made me laugh so much that I think about giving up...
the toString() override was the trick...