csn classes

inner classes and anonymous classes reprint please indicate source:http://blog.csdn.net/u012637501( embedded _ small J Sky )first, the internal class1. DefinitionA class is defined inside a class, which is a nested class (inner Class). There are several features: (1) A nested class can directly access the members (variables and methods) of the class that nested it, including private members. However, the

1. Abstract methods, abstract classes1) Abstract Method: Modified by abstract Only the definition of the method, no concrete implementation of the method (not even {}) The abstract method is a method of abstraction, and the abstract method is only defined by the method, without the method body implementation, ending with a semicolon. Namely: In the method five elements, the abstract method lacks one element (method body), also may interpret the abstract method as the incomplete

Java is an object-oriented language, Java object-oriented generally have three major characteristics: encapsulation, inheritance, polymorphism.Encapsulation: It is the encapsulation of properties and methods into a class.Inheritance: As subclasses inherit some properties and methods of the parent class.Polymorphic: Just as a parent class has multiple subclasses of different characteristics.Here I do not explain more, below I mainly explain an inheritance. Inheritance is a feature of OOP (object

Part of the content reference http://www.imooc.com/Inner class:What is the inner class in JavaQ: What is an internal class?A: The Inner class (Inner Class) is the class defined in another class. Corresponding to this, the class containing the inner class is called the outer class.Q: Why do you define a class in another class? Clear refreshing cool independent of a kind of how good ah!!A: The main functions of the inner class are as follows:1. The inner class provides a better encapsulation that

: Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text; Namespace InterfaceBubleSort{Public class BubleSort{Public void BubleSortMethord (IComparable [] array){For (int I = 0; I {For (int j = 0; j {If (array [I]. CompareTo (array [I + 1])> 0){IComparable temp = array [I];Array [I] = array [I + 1];Array [I + 1] = temp;}}}} }} Main function class: Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text; Namespace InterfaceBubleSort{

In PHP, "interface-oriented programming" and "coupling method" are implemented using interfaces, abstract classes, and common base classes. Copy the code as follows :? Php * is released to facilitate reading and publishing. you are welcomed to give guidance to others. [note] This example has passed the test. The code is as follows: /*What you learn and do is published to facilitate your own reading and

After thinking for a long time, I still cannot come up with an accurate answer. If anonymous internal classes and local internal classes exist, they are invisible to the methods of peripheral classes, but they cannot be used by methods, it cannot be explained that internal class methods and variables can still be accessed, as long as an instance is created. There

static meansThere are two types of representations in C + +, static member variables and static member functionsA static member in a class belongs to the current class only and does not belong to an object. A static member of a class has only one copy of the current class, and each object can access a static member, and of course it can be accessed by the class name.It is recommended to use the class name:: Static member to accessThe static member function should be initialized outside of all me

Before I mentioned the concept of combinatorial classes, I'll introduce two classes, friends, and inner classes today.A combination class is an object in a class that has another class, such as declaring a class Penson, a member variable having a name, age, date of birth, and so on, declaring a date class, which is the information of the date of the month and yea

What are the differences between Template functions, function templates, template classes, and class templates? -Zhao baolong-blog Park What are the differences between Template functions, function templates, template classes, and class templates? There are several such terms in C ++, but most of the time we use them is not correct, and they are almost replaced by each other. Below I want to thoroughly i

1. php Interface Class: InterfaceIn fact, their role is very simple. When many people develop a project together, they may call some classes written by others, and you will ask, how do I know how the implementation method of a function is named? At this time, the PHP interface class plays a role. When we define an interface class, the method in it must be implemented by the following sub-classes, for exampl

Object-Oriented Programming -- define basic classes and derived classes [continued] IV,VirtualAnd other member functions Function calls in C ++ do not use dynamic binding by default. To trigger dynamic binding, two conditions must be met: 1) only member functions specified as virtual functions can be dynamically bound. member functions are non-virtual functions by default, and non-virtual functions are not

One: wrapper classes for basic data typesThe Java language provides the corresponding wrapper class for all basic data typesBasic data Type wrapper classByte (bytes) java.lang.Bytechar (character) Java.lang.CharacterShort (shorter integer) java.lang.Shortint (integral type) Java.lang.IntegerLong (L-integer) Java.lang.LongFloat (float type) java.lang.FloatDouble (dual precision) java.lang.DoubleBoolean (Boolean) java.lang.boolean! []wrapper

First, what is nested class and internal class? You can define another class within a class, called a nested class (nested classes), which has two types: Static nested classes and non-static nested classes. Static nested classes use few, most important, non-static nested classes