java.io
public class
public class
java.io.ObjectStreamClass
| java.lang.Object | ||
| java.io.ObjectStreamClass | Serializable | |
Instances of ObjectStreamClass are used to describe classes of objects used by serialization. When objects are saved, information about all its superclasses is also saved by the use of descriptors, instances of ObjectStreamClass. These descriptors carry information about the class they represent, such as - The name of the class - SUID of the class - Field names and types
See Also
Summary
Constants
| Value | ||||
|---|---|---|---|---|
| ObjectStreamField[] | NO_FIELDS | A value that indicates the class has no Serializable fields |
Public Methods
| Class | forClass() | ||||
| Return the class (java.lang.Class) that the receiver represents | |||||
| ObjectStreamField | getField(String name) | ||||
| Answers a given field by name. | |||||
| ObjectStreamField[] | getFields() | ||||
| Answers the collection of field descriptors for the fields of the corresponding class | |||||
| String | getName() | ||||
| Answers the name of the class represented by the receiver | |||||
| long | getSerialVersionUID() | ||||
| Answers the Serial Version User ID of the class represented by the receiver | |||||
| static | ObjectStreamClass | lookup(Class cl) | |||
Return the descriptor (ObjectStreamClass) corresponding to the class
cl. |
|||||
| String | toString() | ||||
| Answers a string containing a concise, human-readable description of the receiver. | |||||
Methods inherited
from class
java.lang.Object
Details
Constants
public static final ObjectStreamField[] NO_FIELDS
A value that indicates the class has no Serializable fields
Public Methods
public Class forClass()
Return the class (java.lang.Class) that the receiver represents
Returns
nullif there is no corresponding class for the receiverClassThe loaded class corresponding to the receiver
public ObjectStreamField getField(String name)
Answers a given field by name.
Parameters
| name | name of the desired field. |
|---|
Returns
- a given field by name.
public ObjectStreamField[] getFields()
Answers the collection of field descriptors for the fields of the
corresponding class
Returns
- the receiver's collection of declared fields for the class it represents
public String getName()
Answers the name of the class represented by the receiver
Returns
- fully qualified name of the class the receiver represents
public long getSerialVersionUID()
Answers the Serial Version User ID of the class represented by the
receiver
Returns
- SUID for the class represented by the receiver
public static ObjectStreamClass lookup(Class cl)
Return the descriptor (ObjectStreamClass) corresponding to the class
cl. If the class is not Serializable or Externalizable,
null is returned.
Parameters
| cl | a java.langClass for which to obtain the corresponding descriptor |
|---|
Returns
nullif instances of the classclare not Serializable or ExternalizableObjectStreamClassThe corresponding descriptor if the classclis Serializable or Externalizable
public String toString()
Answers a string containing a concise, human-readable description of the
receiver.
Returns
- a printable representation for the receiver.