UML-based tools are often used for J2EE/.NET application analysis and design, both because UML’s object orientation is ideal for

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问题 UML-based tools are often used for J2EE/.NET application analysis and design, both because UML’s object orientation is ideal for the J2EE/.NET implementation(66)and because of the expanding scope and complexity of today’s enterprise endeavors.(67)the approaches diverge at the coding/implementation phase, a common set of analysis and design techniques applies to both J2EE and.NET.
   The use of a virtual machine(VM)architecture is also common to J2EE and .NET. Application development tools(68)intermediate-level code instead of platform-specific binary code, which means the VM interprets that code in real time or performs Just-In-Time(JIT)compilation; the Microsoft VM always runs JIT-compiled code. This VM-based model results in(69)-independent applications and is conducive to the late-binding technique that’s(70)to the OO approach.

选项 A、other
B、simplify
C、complex
D、critical

答案D

解析 在J2EE/.NET的应用分析和设计中,经常要使用基于UML的工具,一是因为在J2EE/.NET的实现模型中,UML的面向对象的特性是理想的,二是因为当今企业的努力,扩展业务范围和复杂性。虽然在编码/实现阶段有分歧,通用的分析和设计技术既可以用在J2EE中,也可用在.NET中。
   虚拟机体系结构也可同时用在J2EE和.NET中,应用开发工具产生的中间代码代替平台特定的二进制代码。这意味着VM实时翻译代码或执行JIT编译,微软VM通常运行JIT编译的代码。这种基于VM的模型导致与平台无关的应用,且有益于后绑定技术,该技术对OO方法是十分重要的。
   注:OO方法(Object-Oriented Method,面向对象的方法)是一种把面向对象的思想应用于软件开发过程中,指导开发活动的系统方法,简称OO方法,是建立在“对象”概念基础上的方法学。
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