将JaDE引入分布式虚拟环境的应用中，同时，包括几个相关的小实验程序结果。-This paper introduces JaDE, a P2P support for the

development of Distributed Virtual Environments that improves

DVE scalability through the notion of Area of Interest. JaDE

denes a set of protocols to support both the active entities

and passive objects of the DVE. The state of passive objects

is replicated on a set of peers to increase the reliability and

the responsiveness of the application. Since passive objects may

be concurrently updated by the active entities of the DVE, a

novel consistency protocol is dened together with a set of

mechanisms to guarantee the persistence of passive objects in

a DVE environment. The paper presents an implementation

of JaDE which exploits the JXTA distributed platform and

shows how the JaDE functionalities may be supported by JXTA

protocols. A set of preliminary experimental results are discussed.