How to cast java interface to java object in scala

Question

I am using a java object that returns a java interface and am a newbie with scala I am trying to do the following:

val model = dao.getAccount(id)

model is an interface but I should be able to cast it as an object

but I know that in java I can cast this object like this:

model = (AccountModel) accountDAO.getAccount(id)

How do I do this in a scala app?

I tried this: retVal.asInstanceOf(AccountModel) but it doesn't seem to like that

Paul Butcher · Accepted Answer · 2011-12-20 20:37:11Z

11

You're almost there. It's retVal.asInstanceOf[AccountModel] (note the square brackets).

answered Dec 20, 2011 at 20:37

Paul Butcher

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5 Comments

chiappone Over a year ago

Thanks, thats it - doing java for over 10 years, trying to pick this up, not sure its worth it ;)

Paul Butcher Over a year ago

If you've been stuck in the Java monoculture for 10 years, you desperately need to do something else - for your sanity if nothing else ;-)

Michael Lorton Over a year ago

"Orangutans are skeptical / Of changes in their cages / And the zookeeper is very fond of rum." -- Paul Simon

Daniel C. Sobral Over a year ago

@user197630 Scala is very regular. AccountModel is a type, and types are passed between square brackets. The same syntax that works for asInstanceOf works for every other method where you might want to pass the type parameter, and is reflected by the declaration of type parameters.

Landei Over a year ago

@user197630 If you still like Java after 10 years, it must be the Stockholm Syndrome...

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