共查询到19条相似文献,搜索用时 182 毫秒
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《个人电脑》1999,(2)
Sun公司将目光投向一个充满了支持Java且容易联网的电话、寻呼机和其他设备的世界。它最近购买了一家叫做Beduin Communications的软件制造商。Beduin的主力产品是一种称为Impact的浏览器,这种浏览器比标准的浏览器要小得多,并且包含了允许你通过在Web页上点击而自动拨电话号码的技术。 Sun下一步行动的目标是使各种易于联网的设备(不仅仅是计算机)随处可见,这些设备可支持即插即用网络连接。微软的计划中也有类似的概念。 Sun计划首先在与Web连接的电话中使用Beduin技术,最终的产品将符合JINI——Sun基于Java的一种软件技术,这种技术可以使得将设备连接到网络上和插上电话线 相似文献
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RMI技术和Jini的结合方式研究 总被引:1,自引:0,他引:1
RMI使运行在不同的Java虚拟机(JVM),甚至不同主机上的Java应用程序可以彼此会话,而Jini技术是建立在JavaBean/RMI机制上的一种应用技术,它使各种设备可以非常简单地连接到任意无准备的网络(impromptunetwork)上,从而使得对新的网络服务的访问和发送变得非常简单,本文对RMI技术和Jini的结合方式进行了介绍,着重分析了RMI技术在Jini模型中的关键作用,并讨论Jini今后的发展方向。 相似文献
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SUN公司为下个世纪的网络计算绘制了一幅蓝图,将这幅蓝图变为现实的技术就是Jini。按照SUN的计划,Jini能将全系列的基于Java的家用电器连接起来,其中包括PC、立体声设备、电话、打印机和数字照相机,它们将为网络上的所有成员提供服务,使得人们不直接使用计算机也能完成很多任务,广大消费者利用网络资源如同打开电灯开关一样简单。 相似文献
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J2ME和Jini结合使利用Java计算平台在各种嵌入式设备上进行简单、迅速的编程开发成为可能,而Jini是一种全新的构建分布式系统的技术,具有动态的,自形成和自管理的特性,能使各种小型设备以一种简捷的方式接入到网络中,使各种Java技术的小型设备能够相互交流.重点介绍了J2ME与Jini技术结合在开发小型设备嵌入式系统中的应用. 相似文献
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据报道,目前Java的应用看好,全球已有70O0万用户、70万开发人员。最引人注目的是,43%的企业正在使用Java平台,其中56%承担关键性任务。国际标准化组织全面支持Java技术和Java平台的巨大进展。目前,几乎各种主流平台都运行Java。估计在1998年,Java工业将有高达10亿美元的收入。 相似文献
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介绍了Java技术的图像加载显示原理以及操作模型,然后通过一个应用实例详细讨论了基于Java的图像过滤效是的技术实现。Java的图像处理技术是Java实现网络交互功能的前提和基础,也为实现Java强大的动画功能提供了技术铺垫,而图像过滤器技术则在对一些图像的复杂处理上大有用武之地。 相似文献
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As network‐enabled embedded devices and Java grow in their popularity, embedded system researchers start seeking ways to make these devices Java‐enabled. However, it is a challenge to apply Java technology to these devices due to their shortage of resources. In this paper, we propose EJVM (Economic Java Virtual Machine), an economic way to run Java programs on network‐enabled and resource‐limited embedded devices. Espousing the architecture proposed by distributed JVM, we store all Java codes on the server to reduce the storage needs of the client devices. In addition, we use two novel techniques to reduce the client‐side memory footprints: server‐side class representation conversion and on‐demand bytecode loading. Finally, we maintain client‐side caches and provide performance evaluation on different caching policies. We implement EJVM by modifying a freely available JVM implementation, Kaffe. From the experiment results, we show that EJVM can reduce Java heap requirements by about 20–50% and achieve 90% of the original performance. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
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一、概述近来,具有平台无关、面向对象等诸多特点的Java语言得到了迅速的发展,以即时编译技术(JIT)为代表的软件实现的Java虚拟机在桌面系统中日趋成熟,在运行速度、内存需求、实时性能等方面都有较大的提高,以网页中的Java小程序为主的Java应用大量涌现,具备了一定的应用基础。 相似文献
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You may think of Jini technology from Sun Microsystems as software for networking embedded systems-machines that contain a microprocessor and do a specific task. But more specifically, Jini software gives network devices self-configuration and self-management capabilities; it lets devices communicate immediately on a network without human intervention. These networks are also self-healing in that devices that leave the network for any reason (machine crashes or power surges, for example) do not affect the remaining devices' operation. A Jini client that loses contact with a server can recover and continue processing. Although it is precisely these advantages that make Jini technology attractive for embedded systems, why stop there? Network plug-and-play capabilities and self-configuration are also attractive for enterprise computing. Java, for example, was initially designed for embedded devices. But that hasn't stopped it from becoming a major force in enterprise computing. Does Java drive your Web server or backend application? At many companies, it does-not a bad accomplishment for an embedded system language. We contend that Jini technology's true promise lies in enterprise computing because it has unique abilities that extend beyond plug-and-play network connectivity 相似文献
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This paper presents a novel approach and a framework for web-based systems that can be used in distributed manufacturing environments. A prototype is developed to demonstrate its application to remote monitoring and control of a Tripod—one type of parallel kinematic machine. It utilizes the latest Java technologies (Java 3D and Java Servlets) as enabling technologies for system implementation. Instead of using a camera for monitoring, the Tripod is modeled using Java 3D with behavioral control nodes embedded. Once downloaded from its server, the 3D model behaves in the same way of its counterpart at client side. It remains alive by connecting with the Tripod through message passing, e.g., sensor signals and control commands transmissions. The goal of this research is to eliminate network traffic with Java 3D models, while still providing users with intuitive environments. In the near future, open-architecture devices will be web-ready having Java virtual machines embedded. This will make the approach more effective for web-based device monitoring and control. 相似文献
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XU Jin-bao 《数字社区&智能家居》2008,(35)
多线程技术是提高程序并发性和效率的重要手段,在网络应用、数据库应用软件、因特网以及嵌入式系统的开发中得到广泛的应用。深入分析多线程及其同步机制、死锁问题,并将多线程技术运用到JavaME开发中的图像平滑移动、低层界面设计、无线消息接收、竞技游戏、移动电子商务开发实践中,并分析开发中会出现的死锁问题,对开发高效率的JavaME应用程序具有重要意义。 相似文献
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