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关键词： 计算机制图   模型   分子   神经网络(计算机)   编程语言   软件  

摘要： MoldaNet is a molecular graphics and modelling program that integrates several new Java technologies, including authentication as a Secure Signed Applet, and implementation of Java 30 classes to enable access to hardware graphics acceleration. It is the first example of a novel class of Internet-based distributed computational chemistry tool designed to eliminate the need far user pre-installation of software on their. client computer other than a standard Internet browser. The creation of a properly authenticated tool using a signed digital X.509 certificate permits the user to employ MoldaNet to read cold write the files to a local file store;actions that are normally disallow ed ill Java applets. The modularity of the Java language also allows straight forward inclusion of Java3D and Chemical Markup Language classes in MoldaNet to permit the user to filter. their model into 30 model descriptors,tors such as VRML97 or CML for saving on local disk. The implications for both distance-based training ml environments find chemical commerce are noted. (C) 1999 by Elsevier Science Inc.

关键词： Mobile agents  

摘要： In this paper we describe a way to save and restore the state of a running Java program. We achieve this on the language level, without modifying the Java virtual machine, by instrumenting the programmer's original code with a preprocessor. The automatically inserted code saves the runtime information when the program requests state saving and re-establishes the program's runtime state on restart. The current preprocessor prototype is used in a mobile agent scenario to offer transparent agent migration for Java-based mobile agents, but could generally be used to save and re-establish the execution state of any Java program. © 1998 Springer-Verlag London Ltd.

关键词： 分布式对象计算   CORBA   Internet环境   ORB互操作性   基因对象适配器   Java-ORB 体系结构   面向对象   软件开发  

摘要： 该文主要致力于分布式对象计算的研究与探讨.首先讨论了分布式对象计算的概念、特性及优点,并对两种重要的分布式对象模型ActiveX/DCOM与OMA/CORBA进行了比较.Internet正渗透到社会的各领域,但其体系结构的缺陷使得难以在Internet上构造复杂的分布式应用程序,所以该文将分布式对象技术CORBA引入Internet,讨论了Java与CORBA在Internet上的集成,并在此基础上,提出了Internet环境下分布式应用程序体系结构Java-ORB,探讨以此解决Internet现存的问题.随后作者还深入讨论了CORBA体系结构中ORB的互操作性和基本对象适配器.

关键词： 类装载器   Java过滤器   应用程序   Java语言  

摘要： 一种简单而有效的解决Ｊａｖａａｐｐｌｅｔ安全性问题的方法，阻止了不可靠的Ｊａｖａａｐｐｌｅｔ进入用户终端，同时保证浏览器可以执行所有可靠的Ｊａｖａａｐｐｌｅｔ。

关键词： 程序设计   Java语言   面向对象  

摘要： ３．８Ｊａｖａ智能卡程序实例下面利用ＪａｖａＣａｒｄ２．０ＡＰＩ来设计１个简单的Ｊａｖａ智能卡应用程序，通过这个程序实现录像带租赁方面的基本处理功能。智能卡上的Ａｐｐｌｅｔ程序将处理卡片持有人姓名、家庭住址以及被租赁录像带的号码和名称。在１个Ｊａｖａ...

关键词： Java程序   应用程序   运行  

关键词： IBM software   COMPUTER software  

摘要： Focuses on Universal Virtual Machine, developed by International Business Machines Corporation, a system which lets developers build platform-independent application other that Java. Use of the system in VisualAge for Java application development; comments from C. F. Wong, a system specialist at the Bank of Montreal; Special features of the system. INSET: Universial expectations.

关键词： 程序设计   Java语言   ISO  

摘要： ＪａｖａＣａｒｄ程序设计（四）清华大学计算机系（１０００８４）徐鹏马群生王克宏（接上期）３．５ＡＰＤＵ处理过程Ｊａｖａ智能卡的类ＡＰＤＵ提供了强健且灵活的机制，以处理ＩＳＯ７８１６－４标准的应用协议数据单元ＡＰ－ＤＵ，它经过优化设计在小型Ｊａｖａ智能...

关键词： 程序设计   Java程序   Applet程序  

摘要： 介绍如何在自己的Ｊａｖａ程序中利用ＣｌａｓｓＬｏａｄｅｒ技术装载Ａｐｐｌｅｔ、建立Ａｐｐｌｅｔ的运行环境、并运行它。文中提供了１个类似ＪＤＫ中的ａｐｐｌｅｔｖｉｅｗｅｒ功能的例程。

关键词： JAVA语言-程序设计   程序设计-JAVA语言