Java Serialization

Object Serialization

Java provides this mechanism, where an object can be represented as a sequence of bytes

Data, type, type of data

In Object Serialization what are included in making an object into a sequence of bytes

Deserialized

after a serualized objet has been written into a file, it can be read from the file and ________

ObjectInputStream

This class is a high-level stream that contain the methods for serializing an object

ObjectOutputStream

This class is a high-level stream that contain the methods for deserializing an object

writeObject

This method form the ObjectInputStream is responsible for writing the state of the object for its particular class so that the corresponding readObject method can restore it

Serializable

A class must implement this interface for it to be serialized

True

True or False

To successfully serailize a class, all of the fields in the class must be serializable

Transient

If a fields is not serializable it must be marked with this keywordq

FileOutputStream

The ObjectOutputStream wraps this class instance to write serialized objects to a file

FileInputStream

The ObjectInputStream wraps this class instance to write serialized objects to a file

True

True or False

Changing the serialVersionUID breaks deserializaton

False

True or False

Adding a new field to a serializable class will cause an error when deserializing old object

True

True or False

Removing a field from a class will always break deserialization

True

True or False

Chaning a field’s type can break deserialization

False

True or False

Reordoring fields in a class will break deserialization

False

True or False

Adding a static field affects deserialization.

True

True or False

Adding a transient filed is safe and does not break deserialization

True

True or False

Removing implements Serializable from a class makes old serialized object unreadable

False

True or False

Changing the access modifier of a field affects deserialization

False

True or False

Cgabgubg a constructor in a serializable class affects deserialization

True

True or False

A non-serializable parent class must have a no-arg constructor if its subclass is serializable

True

True or False

If a superclass becfome serializable after serializatoin, old object may not deserialize

False

True or False

Changing the body of a method in a serializable class can break deserialization.