Stub creation

For any distributed application, the client must know what object it is going to contact, and which method of this object it must call. Because the ORB is a general framework, you must give it general information about the method that you want to call.

You provide the connection information by implementing a Java™ interface, for example Sample. The interface contains basic information about the methods that can be called in the remote object.

The client relies on the existence of a server containing an object that implements the Sample interface. You create a proxy object that is available on the client side for the client application to use. The proxy object is called a stub. The stub that acts as an interface between the client application and the ORB.

rmic -iiop Sample

This command generates a file and object named _Sample_Stub.class.

The presence of a stub is not always mandatory for a client application to operate. When you use particular CORBA features such as the Dynamic Invocation Interface (DII), you do not require a stub. The reason is that the proxy code is implemented directly by the client application. You can also upload a stub from the server to which you are trying to connect. See the CORBA specification for further details.