Java hashmap issue

Question

Any ideas why following line has the related error message? Thanks.

Code

Map<int,boolean> buffer = new HashMap<int, boolean>();

Error Message

Description Resource    Path    Location    Type
Syntax error, insert "Dimensions" to complete ReferenceType

You cannot use primitive types in Maps – CConard96 May 15 '16 at 22:32 — CConard96, May 15 '16 at 22:32

score 5 · Accepted Answer · edited May 15 '16 at 22:34

5

Your code should be like this:

Map<Integer,Boolean> buffer = new HashMap<Integer, Boolean>();

You cannot use primitive types with genericity.

You will need to use Wrapper classes for them.

edited May 15 '16 at 22:34

Yassin Hajaj

answered May 15 '16 at 22:32

Pritam Banerjee

1

Thanks Pritam and Yassin! Vote up and mark your reply as answer. – Lin Ma May 15 '16 at 23:08

1 Answers1