It functions similarly but provides more advanced security, object discovery capabilities, and other mechanisms for distributed object applications. Jini offers a more advanced version of RMI in Java. Version 5.0 of Java and beyond no longer require this step. Note that with Java versions before Java 5.0 developers had to compile RMI stubs in a separate compilation step using rmic. RMI functionality comes in the package java.rmi, while most of Sun's implementation is located in the sun.rmi package. Still, the RMI-IIOP and JRMP implementations do not have fully identical interfaces. Additionally, the ability to pass arguments " by value" was added to CORBA in order to be compatible with the RMI interface. The programmers of the original RMI API generalized the code somewhat to support different implementations, such as a HTTP transport. The basic idea of Java RMI, the distributed garbage-collection (DGC) protocol, and much of the architecture underlying the original Sun implementation, come from the "network objects" feature of Modula-3. Usage of the term RMI may denote solely the programming interface or may signify both the API and JRMP, IIOP, or another implementation, whereas the term RMI-IIOP (read: RMI over IIOP) specifically denotes the RMI interface delegating most of the functionality to the supporting CORBA implementation. In order to support code running in a non-JVM context, programmers later developed a CORBA version. The protocol underlying this Java-only implementation is known as Java Remote Method Protocol (JRMP).
The original implementation depends on Java Virtual Machine (JVM) class-representation mechanisms and it thus only supports making calls from one JVM to another.
In computing, the Java Remote Method Invocation ( Java RMI) is a Java API that performs remote method invocation, the object-oriented equivalent of remote procedure calls (RPC), with support for direct transfer of serialized Java classes and distributed garbage-collection. Java 2 SDK, Standard Edition, v1.2 removed the need for a skeleton. A typical implementation model of Java-RMI using stub and skeleton objects.
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