| Java语言多重分派机制的研究 |
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| 引用本文： | 舒国强,潘爱民. Java语言多重分派机制的研究[J]. 计算机工程与应用, 2002, 38(22): 100-103 |
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| 作者姓名： | 舒国强 潘爱民 |
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| 作者单位： | 1. 中国科学院软件研究所先进软件技术联合实验室,北京,100080
2. 北京大学计算机研究所,北京,100871 |
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| 摘 要： | 多重分派是面向对象语言的一个高级特性,是面向对象程序设计中多态性实现的基础。目前的主流面向对象语言Java与C++都不支持动态多重分派。文章介绍了Java语言现有的分派技术,讨论了为Java语言添加动态多重分派特性的几种途径并对它们的利弊进行比较。文章提出并分析了面向对象语言实现多重分派需要解决的若干问题,最后展望了未来的研究方向。
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| 关 键 词： | 多重分派 双分派 Java 虚拟机 设计模式 |
| 文章编号： | 1002-8331-(2002)22-0100-04 |
| 修稿时间： | 2001-09-01 |
A Research on Multi-Method Dispatch Extension in Java |
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| Shu Guoqiang Pan Aimin. A Research on Multi-Method Dispatch Extension in Java[J]. Computer Engineering and Applications, 2002, 38(22): 100-103 |
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| Authors: | Shu Guoqiang Pan Aimin |
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| Affiliation: | Shu Guoqiang 1 Pan Aimin 21 |
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| Abstract: | Multi-Method dispatch is an advanced topic of Object Oriented(OO)Language.As a mainstream OO lan-guage,Java as currently defined does not support dynamic multi-dispatch.This limits some OO spirit(polymorphism,etc.)to be embodied in Java.This paper is focused on the extensions of Java to support multi-dispatch feather.The authors analyze the dispatching mechanism of Java platform,then several different approachs to implement dynamic multi-dis-patch in Java are introduced and the advantages and drawbacks are discussed.They also present a case study of the simulation of multi-dispatch based on the"Visitor"design pattern and at last,proposal of further work is presented. |
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| Keywords: | Multi-dispatch Double-dispatch Java JVM Design Pattern |
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