Yes, it is possible that two different classes can have the same serialVersionUID value. But prefer to use a unique one for each class. Also use 8 to 10 digit longer one rather than just 1 as value..
Also asked, what is a serialVersionUID?
Simply put, the serialVersionUID is a unique identifier for Serializable classes. This is used during the deserialization of an object, to ensure that a loaded class is compatible with the serialized object.
Furthermore, what is the use of serialVersionUID 1l? The serialVersionUID is a universal version identifier for a Serializable class. Deserialization uses this number to ensure that a loaded class corresponds exactly to a serialized object. If no match is found, then an InvalidClassException is thrown.
Accordingly, does serialVersionUID needed?
the default serialVersionUID computation is highly sensitive to class details that may vary depending on compiler implementations, and can thus result in unexpected InvalidClassException s during deserialization. Therefore, you must declare serialVersionUID because it give us more control.
What is the role of serialVersionUID in serialization process?
During serialization, java runtime associates a version number with each serializable class. This number called 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.
Related Question Answers
How do I generate serialVersionUID?
Java : How to generate serialVersionUID - serialver command. JDK has a build in command called “ serialver ” to generate the serialVersionUID automatically.
- Use Eclispe IDE. If you are using Eclipse, move your mouse over the serialization class.
- Anything you want. Just specify your own serialVersionUID , give a number and append an “L” behind.
How do I use serialVersionUID?
The serialization at 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.What is serialVersionUID what would happen if you don't define this?
serialVersionUID is used for version control of object. Consequence of not specifying serialVersionUID is that when you add or modify any field in class then already serialized class will not be able to recover because serialVersionUID generated for new class and for old serialized object will be different.What is the purpose of serialization?
Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.What does serialVersionUID 1l mean?
The serialVersionUID is a universal version identifier for a Serializable class. Deserialization uses this number to ensure that a loaded class corresponds exactly to a serialized object. If no match is found, then an InvalidClassException is thrown.What is transient in Java?
transient is a Java keyword which marks a member variable not to be serialized when it is persisted to streams of bytes. When an object is transferred through the network, the object needs to be 'serialized'. Serialization converts the object state to serial bytes.When should I update serialVersionUID?
You should change the serialVersionUID only when you deliberately want to break compatibility with all existing serializations, or when your changes to the class are so radical that you have no choice - in which case you should really think several times about what it is that you are actually doing.What is externalization in Java?
What is Externalization in Java? Externalization in Java is used whenever you need to customize the serialization mechanism. If a class implements an Externalizable interface, then serialization of the object will be done using the method writeExternal().Why do we need serialization in Java?
Serialization refers to the translation of java object state into bytes to send it over the network or store it in hard disk. We need serialization because the hard disk or network infrastructure are hardware component and we cannot send java objects because it understands just bytes and not java objects.Why do we implement serializable in Java?
Serializable is a marker interface (has no data member and method). It is used to "mark" Java classes so that the objects of these classes may get a certain capability. The Cloneable and Remote are also marker interfaces. It must be implemented by the class whose object you want to persist.How do you serialize an object in Java?
To serialize an object means to convert its state to a byte stream so that the byte stream can be reverted back into a copy of the object. A Java object is serializable if its class or any of its superclasses implements either the java. io. Serializable interface or its subinterface, java.What is the use of private static final long serialVersionUID 1l?
SerialVersionUID is an ID which is stamped on object when it get serialized usually hashcode of object, you can use tool serialver to see serialVersionUID of a serialized object . SerialVersionUID is used for version control of object. you can specify serialVersionUID in your class file also. 
