CODEWITHSUNDEEP
java
A Programmer
A Programmer

Reputation: 378

how to identify the type of the variable declared as interface

consider am declaring a variable avar as 

Set avar;

then ,i initialized as 

avar= new HashSet();

now if i out this avar class... 

System.out.println("class----->"+avar.getClass());
System.out.println("class name--->"+avar.getClass().getName());
System.out.println("class--super name--->"+avar.getClass().getSimpleName());
System.out.println("is interface--->"+avar.getClass().isInterface());

It output is :

class----->class java.util.HashSet
class name--->java.util.HashSet
class--super name--->HashSet
is interface--->false

Is it Possible to get the variable type as Set....

i mean the expected out is Set ........

Upvotes: 2

Views: 178

Answers (1)

Jon Skeet
Jon Skeet

Reputation: 1500155

The type of the variable is Set. The type of the object that the value of the variable refers to is HashSet.

You can't get the type of the variable if you've only got the value (e.g. if this value is received by a method as a parameter).

This goes back to your earlier questions - it's still not clear to me that you've really understood my answers there...

Upvotes: 4

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