Eclipse issues warnings when a serialVersionUID is missing. The serializable class Foo does not declare a static final serialVersionUID field of type long What is serialVersionUID and why is it important? Please show an example where missing serialVersionUID will cause a problem. 2 26 The docs for java.io.Serializable are probably about as good an explanation … Read more
The docs for java.io.Serializable are probably about as good an explanation as you’ll get: The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If … Read more
What is Serialization?
Sergio: You should use BLOB. It is pretty straighforward with JDBC. The problem with the second code you posted is the encoding. You should additionally encode the bytes to make sure none of them fails. If you still want to write it down into a String you can encode the bytes using java.util.Base64. Still you should use … Read more
