I have a method that returns a map
defined as:
public Map<String, ?> getData();
The actual implementation of this method is not clear to me, but, when I try to do:
obj.getData().put("key","value")
I get following compile time error message:
The method put(String, capture#9-of ?)
in the type Map
is not applicable for the arguments
(String, String)
What is the problem? Is String
not of type anything?
Thanks in advance.
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