All Implemented Interfaces:

Serializable

public class ObjectStreamClass
extends Object
implements Serializable

Since:

1.1

See Also:

ObjectStreamField, Object Serialization Specification, Section 4, Class Descriptors, Serialized Form

• Field Summary

  Fields 

  Modifier and Type	Field	Description
  static ObjectStreamField[]	NO_FIELDS	serialPersistentFields value indicating no serializable fields

• Method Summary

  Modifier and Type	Method	Description
  Class<?>	forClass()	Return the class in the local VM that this version is mapped to.
  ObjectStreamField	getField​(String name)	Get the field of this class by name.
  ObjectStreamField[]	getFields()	Return an array of the fields of this serializable class.
  String	getName()	Returns the name of the class described by this descriptor.
  long	getSerialVersionUID()	Return the serialVersionUID for this class.
  static ObjectStreamClass	lookup​(Class<?> cl)	Find the descriptor for a class that can be serialized.
  static ObjectStreamClass	lookupAny​(Class<?> cl)	Returns the descriptor for any class, regardless of whether it implements Serializable.
  String	toString()	Return a string describing this ObjectStreamClass.

• Field Details

  • NO_FIELDS

    serialPersistentFields value indicating no serializable fields

• Method Details

  • lookup

    Find the descriptor for a class that can be serialized. Creates an ObjectStreamClass instance if one does not exist yet for class. Null is returned if the specified class does not implement java.io.Serializable or java.io.Externalizable.

    Parameters:

    cl - class for which to get the descriptor

    Returns:

    the class descriptor for the specified class

  • lookupAny

    Returns the descriptor for any class, regardless of whether it implements Serializable.

    Parameters:

    cl - class for which to get the descriptor

    Returns:

    the class descriptor for the specified class

    Since:

    1.6

  • getName

    Returns the name of the class described by this descriptor. This method returns the name of the class in the format that is used by the Class.getName() method.

    Returns:

    a string representing the name of the class

  • getSerialVersionUID

    public long getSerialVersionUID()

    Return the serialVersionUID for this class. The serialVersionUID defines a set of classes all with the same name that have evolved from a common root class and agree to be serialized and deserialized using a common format. NonSerializable classes have a serialVersionUID of 0L.

    Returns:

    the SUID of the class described by this descriptor

  • forClass

    public Class<?> forClass()

    Return the class in the local VM that this version is mapped to. Null is returned if there is no corresponding local class.

    Returns:

    the Class instance that this descriptor represents

  • getFields

    Return an array of the fields of this serializable class.

    Returns:

    an array containing an element for each persistent field of this class. Returns an array of length zero if there are no fields.

    Since:

    1.2

  • getField

    Get the field of this class by name.

    Parameters:

    name - the name of the data field to look for

    Returns:

    The ObjectStreamField object of the named field or null if there is no such named field.

  • toString

    Return a string describing this ObjectStreamClass.

    Overrides:

    toString in class Object

    Returns:

    a string representation of the object.