ObjectStreamClass getSerialVersionUID() in Java

getSerialVersionUID(): This method is available in the java.io.ObjectStreamClass class of Java.

Syntax:

long java.io.ObjectStreamClass.getSerialVersionUID()

This method returns the serialVersionUID for this class. The serialVersionUIDdefines a set of classes all with the same name that has evolved from a common root class and agrees to be serialized and deserialized using a common format.

NonSerializable classes have a serialVersionUID of 0L.

Parameters: NA

Returns: the SUID of the class described by this descriptor.

Exceptions: NA

Approach

Java

import java.io.ObjectStreamClass;

public class ObjectStreamClassgetSerialVersionUID {
    public static void main(String[] args) {

        ObjectStreamClass objectStreamClass = 
                   ObjectStreamClass.lookup(String.class);

        System.out.println(objectStreamClass.getSerialVersionUID());
    }
}

Output:

-6849794470754667710

Some more methods of ObjectStreamClass

forClass(): This method returns the class to the local VM that this version is mapped to.

getField(String): This method gets the field of this class by name.

getFields(): This method returns an array of the fields of this serializable class.

getName(): This method returns the name of the class described by this descriptor.

lookup(Class): This method creates an ObjectStreamClass instance if one does not exist yet for the class.

lookupAny(Class): This method returns the descriptor for any class, regardless of whether it implements Serializable.

toString(): This method returns a string describing this ObjectStreamClass.