ObjectStreamClass

ObjectStreamClass

java.io

---

Java 1.1

serializable

This class represents a class that is being serialized. An ObjectStreamClass object contains the name of a class, its unique version identifier, and the name and type of the fields that constitute the serialization format for the class. getSerialVersionUID( ) returns a unique version identifier for the class. It returns either the value of the private serialVersionUID field of the class or a computed value that is based upon the public API of the class. In Java 1.2 and later, getFields( ) returns an array of ObjectStreamField objects that represent the names and types of the fields of the class to be serialized. getField( ) returns a single ObjectStreamField object that represents a single named field. By default, these methods use all the fields of a class except those that are static or transient . However, this default set of fields can be overridden by declaring a private serialPersistentFields field in the class. The value of this field should be the desired array of ObjectStreamField objects.

ObjectStreamClass class does not have a constructor; you should use the static lookup( ) method to obtain an ObjectStreamClass object for a given Class object. The forClass( ) instance method performs the opposite operation; it returns the Class object that corresponds to a given ObjectStreamClass . Most applications never need to use this class.

Figure 9-39. java.io.ObjectStreamClass

 public class  ObjectStreamClass  implements Serializable {  // No Constructor   // Public Constants   1.2  public static final ObjectStreamField[ ]  NO_FIELDS  ;  // Public Class Methods  public static ObjectStreamClass  lookup  (Class<?>  cl  );  // Public Instance Methods  public Class<?>  forClass  ( );  1.2  public ObjectStreamField  getField  (String  name  );  1.2  public ObjectStreamField[ ]  getFields  ( );        public String  getName  ( );        public long  getSerialVersionUID  ( );  // Public Methods Overriding Object  public String  toString  ( );   } 

Passed To

ObjectInputStream.resolveClass( ) , ObjectOutputStream.writeClassDescriptor( )

Returned By

ObjectInputStream.readClassDescriptor( ) , ObjectInputStream.GetField.getObjectStreamClass( )