The interface for remote object The remote interface must satisfy the following conditions: It must extend the interface Remote. Stub and Skeleton Package identifier of remote object Package method identifier Marshall parameters Send package to server skeleton Unmarshall parameters Calls return value or exception Marshall method return Send package to client stub Stub Operation Skeleton Operation Ĭlass Diagram – four required classes 1 2 3 4 Interfaces and Classes in the java.rmi package Introducing RMI (cont.) A distributed object application has to handle the following properties: Locate remote objects Communicate with remote objects Load class bytecodes for objects that are passed as parameters or return values ![]() Users use object as though it were a regular, local object Network connections happen automatically behind the scenes Java ‘serialization’ lets you pass complex data structures over the network without writing code to parse and reconstruct them The client gets remote references to remote objects in the server and invokes methods on those remote objects. Then it waits for clients to invoke methods on the objects. The server creates remotes objects and makes references to those objects accessible. ![]() ![]() ![]() Introducing RMI An RMI application is often composed of two separate programs, a server and a client. A Short Java RMI Tutorial Albert Guo Īgenda Introducing RMI The RMI classes and interfaces The General RMI Architecture Demo – build up 4 required classes Demo – compiling and running the Weather Server
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