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    引言: db4o has been chosen for applic
 

 

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    摘要:目前已经开发了若干个处理字节码和类文件的 java 库,其中包括我在以前的 java 编程动态性 系列中介绍的 javassist 和 bcel 库(参阅 参考资料)。asm 是这种类型的另一个更新的库。与其他库不同,asm 被设计和实现为尽可能小而快。在本月的这一期文章中,我将深入研究 asm 在这一点上做得到底如何,将它与其他两个用作本系列中的示例的库进行比较。在上一期文章中,我演示了如何用运......


Simple Object Persistence with the db4o Object Database

db4o has been chosen for applications in embedded systems in which zero administration, reliability, and low footprint are critical features. in germany, bmw car it, for example, uses it in an embedded car electronics prototype. die mobilanten, also in germany, uses db4o in a pda-based solution for mid-sized utilities. in the u.s., massie systems retinal imaging system for infant eye diagnosis relies on db4o to power its client imaging session database.

same api, different storage 【程序编程相关:Java平台乱弹一

the sheer simplicity of the way in which you store objects with db4o is also attractive for teaching purposes. the university of essex and texas a&m university uses db4o for teaching and research purposes. at my own college, for students learning how to apply object-oriented concepts in their projects, the need to interface with a relational database can have a negative influence on their approach to design of their domain models. using db4o allows them to work with persistent data without the distraction of conflicting data models and without the need to spend a significant amount of time learning to use a tool such as hibernate or a complex oodbms. also, learning about the concepts of an object-oriented query api may prove useful in the future. 【推荐阅读:Java平台乱弹二


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 ·jbuilder2005单元测试之junit框架    »显示摘要«
    摘要:简单的框架  junit是由erich gamma和kent beck开发的开源测试框架,jbuilder集成了这个框架并对此做了扩展。junit之所以流行并为广大的开发人员所推崇,一是因为它实战性强,功能强大,二是因为它实在简单。一个产品或框架要能有生命力,最好都具备这样的特点。  简单地讲这个框架提供了许多断言(assert)方法,允许你设置测试的规则,如:assertequals()、ass......
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