how to serialize class?

Question

When I insert a List into mongodb, there is a problem:

Exception in thread \"main\" java.lang.IllegalArgumentException: can\'t serialize class mongodb.Person         


        

Answer 1

Your Person class definition needs to have implements Serializable in order for it to be serialized, e.g.:

class Person implements Serializable {
   //Rest here
}

Here are some useful links on Java object serialization: Link, Link.