hibernate class cast exception from object to ...

http://stackoverflow.com/questions/22548325/java-lang-classcastexception-cannot-be-cast-to-java-lang-integer

When you select specific columns from DB, the result you get is not the entity object, but an

Object[]

, with each element of array holding different column values. So, what you're getting from

query.list()

method is:

List<Object[]>

. So, certainly when you cast

list.get(0)

, to

App1User

, that will result in

ClassCastException

.