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Mobile Agents with Java: The Aglet API

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Abstract Java, the language that changed the Web overnight, offers some unique capabilities that are fueling the development of mobile agent systems. In this article we will show what exactly it is that makes Java such a powerful tool for mobile agent development. We will also draw attention to some shortcomings in Java language systems that have implications for the conceptual design and use of Java-based mobile agent systems. Last, but not least, we will introduce the aglet a Java-based agile agent. We will give an overview of the aglet and, its application programming interface, and present a real-world example of its use in electronic commerce. 1 Introduction Mobile agents are the basis of an emerging technology that promises to make it very much easier to design, implement, and maintain distributed systems White 1996 . We have found that mobile agents reduce network traffic, provide an effective means of overcoming network latency, and perhaps most importantly, through their ability to operate asynchronously and autonomously of the process that created them, help us to construct more robust and faulttolerant systems. This is not the place to examine the characteristics of the numerous agent systems made available to the public by many research and development labs. But if we looked at all these systems, we would find that a property shared by all agents is that fact that they live in some environment. They have the ability to interact with their execution environment, and to act asynchronously and autonomously upon it. No one is required either to deliver information to the 1 This article is based on a chapter of a forthcoming book by Lange and Oshima entitled ...

Source: zoo.cs.yale.edu

 

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