multilevel inheritance definition

1. Encapsulation Encapsulation: Is the property of the hidden object and implementation details, only provide public access to the external way.Encapsulation steps: Modify the visibility of attributes to restrict access to properties, create a pair

In JavaScript, objects have no prototypes, and constructors have prototypes The meaning of the prototype: if the constructor has a prototype object A, the instance created by the constructor must be copied from a Copy Code code as follows:

The first thing to note is that the Java constructor is not a function, so he cannot be inherited, which is more common when we extends the constructor of a subclass, even though the subclass constructor parameters are exactly the same as the parent

below is a list of 125 basic C # interview questions. These interview questions are simple and straightforward, covering the most basic concepts of C #, mostly related to object-oriented concepts. So if you're preparing a C # interview, I suggest

CEN Advanced Technology Training Center (www.itisedu.com) Generalization is a classification relationship between a general element and a specific element. The specific element is exactly the same as the general element, but it contains some

一、五个 Design principles:Single duty principle, open closure principle, dependency inversion principle, interface isolation principle and Liskov (Richter) substitution principle. Single principle of responsibilityFor a single responsibility

Recently began to learn php+mysqL, recorded in the learning process of the key content, and then consider the development of the site's process also write a series of blogs. This blog mainly introduces the difference between Abstract Class and

AbstractClass and Interface in PHP. The AbstractClass and Interface in PHP recently started to learn PHP + MySQL, record the key content in the learning process, and then consider writing a series of blogs into the website development process.

Original: http://www.techflirt.com/tutorials/oop-in-php/abstract-classes-interface.htmlRecently began to learn php+mysqL, record the key content of the learning process, and then consider the development of the site process also write a series of

一、三个 Basic Features The three basic characteristics of object-oriented are encapsulation, inheritance, polymorphism. Package The package is best understood. Encapsulation is one of the object-oriented features and is the main feature of object