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关键词： Java程序   程序制作   实用技巧   传输   三星   数据线   MIDP2.0   视频   专用  

摘要： 对JAVA MIDP2．0有良好支持的D508是广大时尚人士的新宠，它本身有大概3．8MB的空间用于存放Java程序，而目前的Java软件和游戏以及电子书种类繁多，我们当然要充分利用D508的Java功能，这里笔者就给大家介绍传输Java程序到D508的方法。

关键词： Java   concurrency   program assurance   static analysis   program transformation   refactoring   program evolution  

摘要： Evolving and refactoring concurrent Java software can be error-prone, resulting in race conditions and other concurrency difficulties. We suggest that there are two principal causes: concurrency design intent is often not explicit in code and, additionally, consistency of intent and code cannot easily be established through either testing or inspection. We explore several aspects of this issue in this paper. First, we describe a tool-assisted approach to modeling and assurance for concurrent programs. Second, we give an account of recent case study experience on larger-scale production Java systems. Third, we suggest an approach to scalable co-evolution of code and models that is designed to support working programmers without special training or incentives. Fourth, we propose some concurrency-related refactorings that, with suitable analysis and tool support, can potentially offer assurances of soundness. (c) 2005 Elsevier B.V. All rights reserved.

摘要： No abstract available

关键词： Application software   Legacy systems   Computer software   Computer systems   Software engineering   Computer software industry   Source code (Computer science)  

摘要： The article reports that application portfolio management software could ease problems of relying on old code. Java and Perl applications that were developed just three years ago have developed 'legacy' attributes. A deeper analysis of the complaints about these legacy systems reveals that the wholesale loss of application knowledge creates most of the maintenance issues, whether the applications are written in Java, Perl, or Cobol. The business relies on the applications but does not dare change them. Some portion of the business relies on the application functionality. Research published by Capers Jones of Software Productivity Research suggests that a lack of application knowledge can have a seriously adverse impact on programmer productivity. With annual savings reported in the range of 10% to 30% of the IT budget, these tools are worth serious consideration by any firm with a large percentage of custom-written source code. The answer to the chronic problem of lost application knowledge in large IT organisations with hundreds of applications lies in the newly available application portfolio management tools. INSET: How to solve the problem of loss of application knowledge.

关键词： 软件蓝领   教学手段   过程启发式教学方法   实践教学   考核方式   课程教学改革   程序设计   Java   人才培养目标   基础理论知识   软件蓝领   教学手段   实践教学   教学方法  

摘要： 程序设计课程教学改革是实现高职软件人才培养目标的关键点之一。文章从教学手段、教学方法和实践教学以及考核方式方面介绍了《Java程序设计》课程所进行的改革,在基础理论知识够用、专业实践技能熟练基础上,特别强调“关键能力”的培养,突出“适应性”和“职业性”的“软件蓝领”人才的培养目标。

关键词： MVC模型   Java应用程序   JSP   Servlet  

摘要： MVC(Model-View-Controller)模式在面向对象程序设计方面已经得到了广泛的应用。本文通过一个简单的用户登录场景,展示Java应用程序在MVC模式下的实现,分析MVC模式的优缺点所在。

关键词： Java虚拟机   内存管理   垃圾收集   性能调整  

摘要： JVM中堆的默认配置有时并不适用于大型程序,这会使系统在垃圾收集上耗费过多的时间,进而导致程序性能下降。简要分析了HotSpot JVM垃圾收集机制,然后结合已有研究,以一个网管程序为例,提出了通过调整垃圾收集提高程序运行效能的方法。

关键词： Java   客户机/服务器   套接字   ServerSocket  

摘要： 阐述了使用Java编程语言对基于客户机/服务器模式的应用编写网络通信程序,讨论了套接字Socket以及Server-Socket,最后给出了一个程序实例。

关键词： Java obfuscation   program protection   decompilation  

摘要： Decompilation is the process of translating object code to source code and is usually the first step towards the reverse-engineering of an application. Many obfuscation techniques and tools have been developed, with the aim of modifying a program, such that its functionalities are preserved, while its understandability is compromised for a human reader or the decompilation is made unsuccessful. Some approaches rely on malicious identifiers renaming, i.e., on the modification of the program identifiers in order to introduce confusion and possibly prevent the decompilation of the code. In this work we introduce a new technique to overcome the obfuscation of Java programs by identifier renaming. Such a technique relies on the intelligent modification of identifiers in Java bytecode. We present a new software tool which implements our technique and allows the processing of an obfuscated program in order to rename the identifiers as required by our technique. Moreover, we show how to use the existing tools to provide a partial implementation of the technique we propose. Finally, we discuss the feasibility of our approach by showing how to contrast the obfuscation techniques based on malicious identifier renaming recently presented in literature. (c) 2004 Elsevier Inc. All rights reserved.

关键词： JAVA程序   程序切片   系统依赖图  

摘要： JAVA语言是目前一种主要的面向对象编程语言,由于JAVA语言复杂的结构,使得对JAVA程序进行程序切片非常困难。本文提出一种层次的构造JAVA系统依赖图的算法,基于JAVA程序本身的层次结构,自顶向下构造系统依赖图,然后基于构造的系统依赖图,用一种改进的两阶段算法得到JAVA程序切片。