Stub and Skeleton Interfaces

The Remote Stub class

This java.rmi.server.RemoteStub class is the super class for stubs of remote objects.

The RemoteRef Interface

The java.rmi.server.RemoteRef interface represents a reference for a remote object. To carry out a remote method invocation, the stub uses a remote reference. This interface is not normally used by programmers using RMI but rather by those implementing their own RMI system.

Methods

• public String getRefClass(ObjectOutput out) - This method returns the class name of the reference type to be serialized onto the stream "out".

• public Object invoke(Remote obj, Method method, Object[] params, long opnum) - This method delegates method invocation to the stub(s) remote reference.

• public boolean remoteEquals(RemoteRef obj) - This method may be used to compare two remote objects.

• public int remoteHashCode() - This method returns a hash code for a remote object.

• public String remoteToString() - This method returns a string representation of the remote object.

The ServerRef Interface

It represents the server-side handle for a remote object.

Methods

• public RemoteStub exportObject(Remote obj, Object data) - This method creates a client stub object for the specified remote object.

• public String getClientHost() - This method returns the hostname of client.

In Java, garbage collector automatically releases memory resources when they are no longer being used. The RMI system uses a reference counting garbage collection algorithm.