教学课程资源库 更多>>

关键词： 分布式程序测试系统   java语言   软件开发   并行程序   事件约束  

摘要： 由于程序的分布运行,测试分布式程序必须同时考虑并发特性和运行环境.介绍了一个面向Java语言的分布式程序测试系统JDPT(Java-oriented distributed program testing system).JDPT基于运行环境定义事件,通过事件序列记录分布式程序的运行过程,并定义事件约束检测可行事件序列集的有效性.通过该技术,JDPT可以有效地判断程序在运行环境中并发执行的正确性,适用于跨平台的Java程序测试.

关键词： 程序设计   数据处理   JAVA(编程)   信息交流   银行   接口(数据处理)   界面   警报系统  

标准号: BS CWA 13937-7-2003

关键词： 多线程   Java语言   程序设计   程序死锁  

关键词： 数据处理   信息交流   JAVA(编程)   银行   接口(数据处理)   界面   程序设计  

标准号: BS CWA 13937-12-2003

关键词： 程序设计   界面   计算机外部设备   接口(数据处理)   银行   信息交流   扫描器(计算机)   JAVA(编程)   数据处理  

标准号: BS CWA 13937-10-2003

关键词： 数据处理   JAVA(编程)   信息交流   银行   接口(数据处理)   显示装置(计算机)   测头   计算机外部设备   界面   程序设计  

标准号: BS CWA 13937-8-2003

关键词： finite elements   object-oriented programming   interactive modeling   numerical analysis   visualization  

摘要： This paper presents techniques for solving systems of equations arising in finite element applications using a localized, tensor-based approach. The approach is localized in that a major part of the solution responsibility is delegated to vector degree-of-freedom objects, rather than residing solely in a global solver working on a monolithic data structure. The approach is tensor-based in that the fundamental quantities used for computation are considered to be second-order tensors. The localized data structure strategy provides the benefits of an efficient sparse and symmetric storage scheme without requiring complex implementation code. The tensor-based aspect of the approach can bring substantial performance benefits by increasing the granularity at which solution algorithms deal with their data. Java and C++ implementations of interactive finite element programs are used to demonstrate performance that is competitive with other available solvers, especially in the case of problems for which interactive analysis is feasible on commonly available hardware. (C) 2003 Elsevier Science Ltd. All rights reserved.

关键词： e-commerce   migration   database reengineering   Enterprise JavaBean   SQL   Net.Data   JSP   relational-object mapping  

摘要： As technology evolves, many organizations face the problem of migrating legacy applications from one technology base to another. We report on a case study involving the migration of legacy code into the IBM(R) WebSphere(R) Commerce Suite product. Specifically, we focus on the problem of migrating applications that use traditional database access techniques to applications using the Enterprise JavaBean (EJB) programming model. Our results include a practical methodology that facilitates such migration, as well as a tool that supports this methodology. The tool has been released on IBM's alphaWorks site.

关键词： Java   内存泄露   程序设计   垃圾收集器   程序设计语音  

摘要： 本文对运行用Java编制的程序时出现的内存泄露问题进行了分析,指出了问题产生的原因及使用垃圾收集器解决问题的方法。

关键词： C++程序设计语言   Java程序设计语言   特征   数据封装   多态性   虚函数   动态联编   运算符重载   面向对象  

摘要： 随着计算机技术的发展,程序设计语言也越来越多,其中C++、Java可以说是目前应用最为广泛的语言,其原因与它们优良的特性密不可分。本文着重探讨这两种程序语言的特征,分别总结和阐述了它们优越于其他语言的、自身所独有的特点及为实现这些特点而采取的有效机制。