RMI Java - Remote Method Invocation in Java | Java Tutorial For Beginners | Intellipaat

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In this video on RMI Java, we will learn about RMI, which stands for Remote Method Invocation. Remote Method Invocation is a Java API that allows objects to invoke methods on other objects that are running in a different JVM. This is useful for building distributed applications, where you need to have multiple applications communicating with each other.

We will start by looking at the basics of RMI, including how it works and what its benefits are. Then, we will create a simple RMI application. We will see how to create the server and client code, and how to invoke methods on the remote object.

Finally, we will discuss some of the limitations of RMI and when you might want to use another technology instead.

🔵 What is RMI?

RMI stands for Remote Method Invocation. It is a Java API that allows objects to invoke methods on other objects that are running in a different JVM. This is useful for building distributed applications, where you need to have multiple applications communicating with each other.

RMI works by using a stub and skeleton pair. A stub is a proxy object that is created on the client side. A skeleton is a proxy object that is created on the server side. When the client makes a call to a remote method, the stub intercepts the call and forwards it to the skeleton. The skeleton then invokes the method on the remote object and returns the result to the stub. The stub then returns the result to the client.

🔵 Benefits of RMI

There are several benefits of using RMI, including:

It is easy to use. RMI provides a simple API that makes it easy to create distributed applications.
It is reliable. RMI uses a reliable transport protocol to ensure that method calls are delivered and that results are returned.
It is secure. RMI uses a security model that ensures that only authorized clients can access remote objects.
It is scalable. RMI can be used to create distributed applications that can scale to handle a large number of users.

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🔵 Following Topics are covered in this session:
0:00 - Introduction
0:55 - What is Java Remote Method Invocation
2:42 - Stub & Skeleton
6:04 - Requirement for Distributed Application
8:46 - Hands-On

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