Showing content from http://java.sun.com/j2se/1.5/docs/api/java/io/../../java/io/../../java/io/ObjectStreamClass.html below:
ObjectStreamClass (Java 2 Platform SE 5.0)
java.io
Class ObjectStreamClass
java.lang.Object
java.io.ObjectStreamClass
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All Implemented Interfaces:
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Serializable
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public class ObjectStreamClass
- extends Object
- implements Serializable
Serialization's descriptor for classes. It contains the name and serialVersionUID of the class. The ObjectStreamClass for a specific class loaded in this Java VM can be found/created using the lookup method.
The algorithm to compute the SerialVersionUID is described in Object Serialization Specification, Section 4.4, Stream Unique Identifiers.
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Since:
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JDK1.1
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See Also:
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ObjectStreamField, Object Serialization Specification, Section 4, Class Descriptors, Serialized Form
NO_FIELDS
public static final ObjectStreamField[] NO_FIELDS
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serialPersistentFields value indicating no serializable fields
lookup
public static ObjectStreamClass lookup(Class<?> cl)
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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.
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Parameters:
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cl - class for which to get the descriptor
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Returns:
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the class descriptor for the specified class
getName
public String getName()
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The name of the class described by this descriptor.
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Returns:
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a
String representing the fully qualified name of the class
getSerialVersionUID
public long getSerialVersionUID()
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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.
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Returns:
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the SUID of the class described by this descriptor
forClass
public Class<?> forClass()
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Return the class in the local VM that this version is mapped to. Null is returned if there is no corresponding local class.
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Returns:
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the
Class instance that this descriptor represents
getFields
public ObjectStreamField[] getFields()
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Return an array of the fields of this serializable class.
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Returns:
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an array containing an element for each persistent field of this class. Returns an array of length zero if there are no fields.
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Since:
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1.2
getField
public ObjectStreamField getField(String name)
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Get the field of this class by name.
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Parameters:
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name - the name of the data field to look for
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Returns:
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The ObjectStreamField object of the named field or null if there is no such named field.
toString
public String toString()
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Return a string describing this ObjectStreamClass.
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Overrides:
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toString in class Object
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Returns:
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a string representation of the object.
Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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