why do we typecast ActionForm into out plain java bean class in Action class?

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why do we typecast ActionForm into out plain java bean
class in Action class?

Question Posted / bandiki.raghava

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why do we typecast ActionForm into out plain java bean class in Action class?..

Answer / jagadeesh b.n

Bcoz as u all know, casting are of 2 types Upcast(implicit)
and Downcast(Explicit)in core java.....Upcasting means
converting lower datatype(int) to higher datatype(long) and
Downcast means its a viceversa of upcast...(long to int)...

As u know in struts ActionForm is a superclass where as ur
Java bean program is a simple class with private fields and
set/get methods for conversion of superclass to sublclass
we use typecasting in struts...

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why do we typecast ActionForm into out plain java bean class in Action class?..

Answer / ravikiran(aptech mumbai)

Because The methods what we declared in a bean are not of
type ActionForm class type that's why we are type casting
and calling our getters and setters

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2 No

why do we typecast ActionForm into out plain java bean class in Action class?..

Answer / santhoshkumar.shaik

ok here our our form data in ActionForm
that's y u shoud do down Type Cast
othere wise u can n't use

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why do we typecast ActionForm into out plain java bean class in Action class?..

Answer / balaji

Bcoz this will tell that our form bean is an action form
bean which will refer to which action it is referred from
strutsconfig.xml file

10x
balaji

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4 No

why do we typecast ActionForm into out plain java bean class in Action class?..

Answer / johndoe

Acctually not realy thinking you should ask that, i mean
well ask, the answer is: to use it's methods.

But to understand it i recomend reading something about
polymorphy which explains why we're casting the action-
form, hope i understood right.

Regards
Jan

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