計(jì)算機(jī)科學(xué)與技術(shù)外文翻譯--詳細(xì)解析java中抽象類和接口的區(qū)別(已修改)
2025-05-31 17:09 本頁面
【正文】 Parsing Java Abstraction of the Difference Between Classes and Interfaces In Java language, abstract scaleup and with support class abstraction definition of two mechanisms. Because of these two kinds of mechanism of existence, just gives Java powerful objectoriented skills. Abstract scaleup and with between classes abstraction definition for support has great similarities, even interchangeable, so many developers into line nonabstract class definition for abstract scaleup and it is being more casual with choice. In fact, both between still has the very big difference, for their choice even reflected in problem domain essence of understanding, to design the intentions of the understanding correctly and reasonable. This paper will for the difference a nalysis, trying to give a developer with a choice between them are based. Understand class abstraction Abstract class and interface in Java language is used for abstract classes (in this article nonabstract class not from abstract scaleup translation, it represents an abstract body, and abstract scaleup for Java language used to define class abstraction in one way, please readers distinguish) defined, then what are the abstract classes, use abstract classes for us any good? In objectoriented concept, we know all objects is through class to describe, but in turn not such. Not all classes are used to describe object, if a class does not contain enough information to portray a concrete object, this class is abstract classes. Abstract classes are often used to characterization of problem field in our analysis, design that the abstract concepts, is to the series will look different, but essentially the same exact conception of abstraction. For example: if we carry out a graphical editing software development, will find problem domain exists round, triangle so some specific concept, they are different, but they all belong to shape such a concept, shape this concept in problem domain is not exist, it is an abstract concept. Precisely because the abstract concepts in problem field no corresponding specific concept, so to characterization abstract concepts nonabstract class cannot be instantiated. In an objectoriented field, mainly used for class abstraction types hidden. We can construct a fixed a group of behavior of abstract description, but this group of behavior but can have any a possible concrete implementation. This abstract describe is abstract classes, and this an arbitrary a possible concrete realization is behaved for all possible derived class. Modules can be operating an abstract body. Due to the module dependent on a fixed abstraction body, so it can are not allowed to modify, Meanwhile, through the abstract derived from the body, also can expand the behavior of this module function. Familiar with OCP readers must know, objectoriented design to be able to achieve a core principle OCP (Open Closed flying), class abstraction is one of the key. From the perspectives of grammar definition abstract class and interface In grammatical perspective, Java language for abstract scaleup and with gives different definitions below to define a way, called produce professional Demo abstract class as an example to illustrate the difference. In the abstract scaleup manner, produce professional Demo can have their own data members, also can have the members of the abstract method, and w
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