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terface for the remote object that must inherit from Remote
Implement an implementation for the remote object, the class must inherit from UnicastRemoteObject
Use the RMIC program to create a stub that used by the server and also by the client
Write a server program to create an instance of the registered remote object and register it with the RMI registry.
Write a client to use this remote object by obtaining a reference to the remote object from the RMI registry and invoking the remote object's methods by sending messages to it.

结果和讨论——RESULTS AND DISCUSSION

ADVANTAGES OF RMI
Object Oriented
Mobile Behavior
Safe and Secure
Easy to Write/Easy to Use
Write Once, Run Anywhere

RMI问题概述——RMI PROBLEM OVERVIEW

According to [1], RMI poses the following problems when run in a cluster

environment:

?RMI is too slow for environments with low latency and high bandwidth. ? RMI's overhead for dealing with network problems is too verbose for a cluster environment. ? The program size increases significantly reducing productivity and maintainability. ? Writing advanced code to implement RMI can become tedious, time consuming and hard to manage.

实现我的彩票应用程序——IMPLEMENTING MY LOTTER APPLICATION

In order to implement my RMI application I had to implement four source files for the Lottery, Server and the client

· Separate file for writing the interface (in my lottery application RandomNumberGenerator.java

· Separate file for writing the interface (in my lottery application RandomNumberGenerator.java

· Separate file in which i have writen the code for the implementation of the interface RandomNumberGeneratorImpl.java

运行我的彩票应用程序——RUNNING MY LOTTERY APPLICATION

打开一个命令行控制台如像ms - dos——Open a command line console e.g. like MS-Dos

1. To compile the interface and its implementation, make sure you in the same directory type 'rmic RandomNumberGeneratorImpl'. 2. Type 'javac LotteryServer.java' and 'javac LotteryClient.java' to compile the client and server programs. 3. Type 'rmiregistry' to start the RMI registry so that objects can be registered, the MS-Dos window will hang in there.

Open another MS-Dos window, make sure you in the same directory, type 'java LotteryServer' to run the server program again the MS-Dos window will hang in there.

4. Open another MS-Dos window, make sure you in the same directory, type 'java LotteryClient' n note n should be an integer and indicates the amount of money you willing to spend on the lottery e.g. 'java LotteryClient 1' to run the client program and the random lottery numbers will be displayed.

Running LotteryClient where the client is choosing to spend only one sterling pound on the lottery.

总结——CONCLUSIONS

I have successfully managed to complete my lottery application. I had two different options which i could use to implement my lottery application. One was to create an array with 49 integer between 1 and 49 and index each element of the array to make sure once a random number is g本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。