public abstract class

RemoteObject

extends Object
implements Serializable Remote
java.lang.Object
   ↳ java.rmi.server.RemoteObject
Known Direct Subclasses
Known Indirect Subclasses

Class Overview

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.

Summary

Fields
protected RemoteRef ref The object's remote reference.
Protected Constructors
RemoteObject()
Creates a remote object.
RemoteObject(RemoteRef newref)
Creates a remote object, initialized with the specified remote reference.
Public Methods
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.
[Expand]
Inherited Methods
From class java.lang.Object

Fields

protected RemoteRef ref

The object's remote reference.

Protected Constructors

protected RemoteObject ()

Creates a remote object.

protected RemoteObject (RemoteRef newref)

Creates a remote object, initialized with the specified remote reference.

Parameters
newref remote reference

Public Methods

public boolean equals (Object obj)

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.

Parameters
obj the Object to compare with
Returns
  • true if these Objects are equal; false otherwise.
See Also

public RemoteRef getRef ()

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.

Returns
  • remote reference for the remote object

public int hashCode ()

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).

Returns
  • a hash code value for this object.
See Also

public String toString ()

Returns a String that represents the value of this remote object.

Returns
  • a string representation of the object.

public static Remote toStub (Remote obj)

Returns the stub for the remote object obj passed as a parameter. This operation is only valid after the object has been exported.

Parameters
obj the remote object whose stub is needed
Returns
  • the stub for the remote object, obj.
Throws
NoSuchObjectException if the stub for the remote object could not be found.