The task is to create a function that makes a map with categories and the amount of times they're listed. I completed the challenge after changing my map to Map rather than Map I thought autoboxing would convert a primitive type to an object? Does that not work for Maps? It's not a dire question, I'm just curious, thanks!

Hi Jana, you cannot use primitive types for generic declarations like . Check out this link (http://stackoverflow.com/questions/2721546/why-dont-java-generics-support-primitive-types) for more information. Kind Regards, Florian

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View Challenge

Posted February 8, 2017 3:25pm by

For getCategoryCounts, why do we have to create a map with an Integer object rather than a primitive type int?

The task is to create a function that makes a map with categories and the amount of times they're listed. I completed the challenge after changing my map to Map<String, Integer> rather than Map<String, int>

I thought autoboxing would convert a primitive type to an object? Does that not work for Maps?

It's not a dire question, I'm just curious, thanks!

1 Answer

February 8, 2017 3:42pm

Hi Jana,

you cannot use primitive types for generic declarations like <String, Integer>. Check out this link for more information.

Kind Regards, Florian

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