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instanceof

Saibabaa Pragada
Ranch Hand

Joined: Oct 24, 2010
Posts: 162
Hi, Why I am getting error at Line 7 but I don't see any issue with Line 5
Mohamed Sanaulla
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Joined: Sep 08, 2007
Posts: 3097
    
  33

I think the error at Line 7 may be because- Its trying to do a cast?


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Prasad Kharkar
Ranch Hand

Joined: Mar 07, 2010
Posts: 446
    
    1

This is a syntax errror
just remove those brackets of Short
it has nothing to do with instanceof test

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Saibabaa Pragada
Ranch Hand

Joined: Oct 24, 2010
Posts: 162
Yes Prasad. I do not have brackets at Line 5. That's why Line 5 is fine. But Line 7 has brackets. Please advice why I am getting error if I keep the brackets at Line 7. What is wrong with that ?
Thakur Sachin Singh
Ranch Hand

Joined: Jun 15, 2010
Posts: 232

mainly we use () brackets for casting the variable and value...here compiler gives error "Illegal start type" because we can't use instanceof operator when we doing casting...see more code like-



here we can not use instanceof operator because this gives us syntax error.


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Prasad Kharkar
Ranch Hand

Joined: Mar 07, 2010
Posts: 446
    
    1

we write types in brackets for typecasting
here we are not casting anything and I don't think that it is valid also to use casting with instanceof operator
as instanceof will check for whole hierarchy
Saibabaa Pragada
Ranch Hand

Joined: Oct 24, 2010
Posts: 162
I am not sure how typecasting affects here..I used brackets in this code but do not see any issue.
Mohamed Sanaulla
Saloon Keeper

Joined: Sep 08, 2007
Posts: 3097
    
  33

My take on this:
The use of (<Type>) is usually regarded as a typecast- So once the compiler encounters this- it expects a value to be followed.
Prasad Kharkar
Ranch Hand

Joined: Mar 07, 2010
Posts: 446
    
    1

Saibabaa Pragada wrote:I am not sure how typecasting affects here..I used brackets in this code but do not see any issue.

of course there should not be any issue with brackets here
we are not typecasting here at all, this is just simple mathematics with brackets
 
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subject: instanceof