com.sun.corba.se.impl.io

Class ObjectStreamClass

java.lang.Object

com.sun.corba.se.impl.io.ObjectStreamClass

All Implemented Interfaces:

Serializable

public class ObjectStreamClass
extends Object
implements Serializable

A ObjectStreamClass describes a class that can be serialized to a stream or a class that was serialized to a stream. It contains the name and the serialVersionUID of the class.
The ObjectStreamClass for a specific class loaded in this Java VM can be found using the lookup method.

Since:

JDK1.1

Author:

Roger Riggs

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	CLASS_MASK
static int	FIELD_MASK
static long	kDefaultUID
static int	METHOD_MASK
static ObjectStreamField[]	NO_FIELDS Set serialPersistentFields of a Serializable class to this value to denote that the class has no Serializable fields.

Method Summary

Modifier and Type	Method and Description
Class<?>	forClass() Return the class in the local VM that this version is mapped to.
long	getActualSerialVersionUID() Return the actual (computed) serialVersionUID for this class.
static long	getActualSerialVersionUID(Class<?> clazz) Return the actual (computed) serialVersionUID for this class.
String	getActualSerialVersionUIDStr() Return the actual (computed) serialVersionUID for this class.
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() The name of the class described by this descriptor.
String	getRMIIIOPOptionalDataRepId() This will return null if there is no writeObject method.
long	getSerialVersionUID() Return the serialVersionUID for this class.
static long	getSerialVersionUID(Class<?> clazz) Return the serialVersionUID for this class.
String	getSerialVersionUIDStr() Return the serialVersionUID string for this class.
boolean	hasField(ValueMember field)
Object	readResolve(Object value)
String	toString() Return a string describing this ObjectStreamClass.
Serializable	writeReplace(Serializable value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

kDefaultUID

public static final long kDefaultUID

See Also:

Constant Field Values

CLASS_MASK

public static final int CLASS_MASK

See Also:

Constant Field Values

FIELD_MASK

public static final int FIELD_MASK

See Also:

Constant Field Values

METHOD_MASK

public static final int METHOD_MASK

See Also:

Constant Field Values

NO_FIELDS

public static final ObjectStreamField[] NO_FIELDS

Set serialPersistentFields of a Serializable class to this value to denote that the class has no Serializable fields.

Method Detail

getName

public final String getName()

The name of the class described by this descriptor.

getSerialVersionUID

public static final long getSerialVersionUID(Class<?> clazz)

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.

getSerialVersionUID

public final 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.

getSerialVersionUIDStr

public final String getSerialVersionUIDStr()

Return the serialVersionUID string 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.

getActualSerialVersionUID

public static final long getActualSerialVersionUID(Class<?> clazz)

Return the actual (computed) serialVersionUID for this class.

getActualSerialVersionUID

public final long getActualSerialVersionUID()

Return the actual (computed) serialVersionUID for this class.

getActualSerialVersionUIDStr

public final String getActualSerialVersionUIDStr()

Return the actual (computed) serialVersionUID for this class.

forClass

public final 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.

getFields

public ObjectStreamField[] 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:

JDK1.2

hasField

public boolean hasField(ValueMember field)

getField

public final ObjectStreamField getField(String name)

Get the field of this class by name.

Returns:

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

writeReplace

public Serializable writeReplace(Serializable value)

readResolve

public Object readResolve(Object value)

toString

public final String toString()

Return a string describing this ObjectStreamClass.

Overrides:

toString in class Object

getRMIIIOPOptionalDataRepId

public final String getRMIIIOPOptionalDataRepId()

This will return null if there is no writeObject method.