complete tutorials on core java in java

In case, Serialization is not used, Java objects can be serialized by many ways, some of the popular methods are listed below: Saving object state to database, this is most common technique used by most applications. You can use ORM tools (e.g. hibernate) to save the objects in a database and read them from the … Read more

Declaring an explicit serialVersionUID field in your classes saves some CPU time only the first time the JVM process serializes a given Class. However the gain is not significant, In case when you have not declared the serialVersionUID its value is computed by JVM once and subsequently kept in a soft cache for future use. … Read more

If you don’t define serialVersionUID in your serilizable class, Java compiler will make one by creating a hash code using most of your class attributes and features. When an object gets serialized, this hash code is stamped on the object which is known as the SerialVersionUID of that object. This ID is required for the … Read more

The serialVersionUID represents your class version, and you should change it if the current version of your class is not backwards compatible with its earlier versions. This is extract from Java API Documentation The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that … Read more

The default Java Serialization mechanism is really useful, however it can have a really bad performance based on your application and business requirements. The serialization process performance heavily depends on the number and size of attributes you are going to serialize for an object. Below are some tips you can use for speeding up the … Read more