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java.rmi.server
Class RemoteObject
java.lang.Object
java.rmi.server.RemoteObject
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All Implemented Interfaces:
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Remote
,
Serializable
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Direct Known Subclasses:
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RemoteObjectInvocationHandler
RemoteServer
,
RemoteServer
,
RemoteStub
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public abstract class
RemoteObject
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extends
Object
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implements
Remote
,
Serializable
The RemoteObject class implements the java.lang.Object behavior for remote objects. RemoteObject provides the remote semantics of Object by implementing methods for hashCode, equals, and toString.
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Since:
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JDK1.1
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See Also:
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Serialized Form
Field Summary
|
protected
RemoteRef
|
ref
The object's remote reference. |
Constructor Summary
|
protected |
RemoteObject
()
Creates a remote object. |
protected |
RemoteObject
(
RemoteRef
newref)
Creates a remote object, initialized with the specified remote reference. |
Method Summary
|
boolean |
equals
(
Object
obj)
Compares two remote objects for equality. |
RemoteRef
|
getRef
()
Returns the remote reference for the remote object. |
int |
hashCode
()
Returns a hashcode for a remote object. |
String
|
toString
()
Returns a String that represents the value of this remote object. |
static
Remote
|
toStub
(
Remote
obj)
Returns the stub for the remote object obj passed as a parameter. |
ref
protected transient RemoteRef ref
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The object's remote reference.
RemoteObject
protected RemoteObject()
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Creates a remote object.
RemoteObject
protected RemoteObject(RemoteRef newref)
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Creates a remote object, initialized with the specified remote reference.
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Parameters:
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newref - remote reference
getRef
public RemoteRef getRef()
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Returns the remote reference for the remote object.
Note: The object returned from this method may be an instance of an implementation-specific class. The RemoteObject class ensures serialization portability of its instances' remote references through the behavior of its custom writeObject and readObject methods. An instance of RemoteRef should not be serialized outside of its RemoteObject wrapper instance or the result may be unportable.
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-
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Returns:
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remote reference for the remote object
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Since:
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1.2
toStub
public static Remote toStub(Remote obj)
throws NoSuchObjectException
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Returns the stub for the remote object obj passed as a parameter. This operation is only valid
after
the object has been exported.
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-
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Parameters:
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obj - the remote object whose stub is
needed
neede
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Returns:
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the stub for the remote object, obj.
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Throws:
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NoSuchObjectException
- if the stub for the remote object could not be found.
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Since:
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1.2
hashCode
public int hashCode()
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Returns a hashcode for a remote object. Two remote object stubs that refer to the same remote object will have the same hash code (in order to support remote objects as keys in hash tables).
-
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Overrides:
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hashCode
in class
Object
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Returns:
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a hash code value for this object.
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See Also:
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Hashtable
equals
public boolean equals(Object obj)
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Compares two remote objects for equality. Returns a boolean that indicates whether this remote object is equivalent to the specified Object. This method is used when a remote object is stored in a hashtable. If the specified Object is not itself an instance of RemoteObject, then this method delegates by returning the result of invoking the equals method of its parameter with this remote object as the argument.
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Overrides:
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equals
in class
Object
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Parameters:
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obj - the Object to compare with
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Returns:
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true if these Objects are equal; false otherwise.
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See Also:
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Hashtable
toString
public String toString()
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Returns a String that represents the value of this remote object.
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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.