cast object to specific class by string

how can i dynamically cast oject to a specific class which is given as a string. e.g.

def a = (ClassA) testService.getObject(xmlString)

i would like to do something like this

开发者_如何转开发

(grailsApplication.getClassForName(classString)) testService.getObject(xmlString)

but the groovy compiler does not like this way of cast operation.

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you could do

Class myClass = grailsApplication.getClassForName(classString)
myClass.cast testService.getObject(xmlString)

but I'm not sure how groovy this way is - it's really just Java way..