Difference between case object and object

Question

Is there any difference between case object and object in scala?

Answer 1

scala> object foo

defined object foo

scala> case object foocase

defined object foocase

Serialization difference:

scala> foo.asInstanceOf[Serializable]

java.lang.ClassCastException: foo$ cannot be cast to scala.Serializable
... 43 elided

scala> foocase.asInstanceOf[Serializable]

res1: Serializable = foocase

toString difference:

scala> foo

res2: foo.type = foo$@7bf0bac8

scala> foocase

res3: foocase.type = foocase