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Another questions for wildcard?

 
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4) In which following type(s) Wild card cannot be used

a)For creation Of Objects
b)As argument type of method
c)As Return type of method
d)In instance of expressions
e)Exception Handling



Answer : a,d,e


Explanation :
List<?> ls = new ArrayList<?>(); is not allowed.
Similarly Instance of expression and exception handling is also not allowed.

I am not sure about d and e.

What's the meaning of d and e?

Can someone explain for me? Thanks in advance?
 
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An instanceof expression is something like this.



You can't use wildcards in that expression.

Also in a catch block, you cannot use a wildcard.
 
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