This article mainly introduces the code example for the PHP parent class to call the subclass method. For more information about the code example, you can refer to the code that suddenly finds that you need to call the subclass method in the
Today, we suddenly find that we need to call the subclass in the parent class, which has not been used before, and can be found through practice. Examples such as:
Copy the Code code as follows:
/*** Parent class calls subclas
Today, we suddenly found that the subclass method needs to be called in the parent class, which has never been used before. It can also be found through practice. Example:
Copy codeThe Code is as follows:/*** The parent class calls the subclass method base
Writing high-quality code to improve the C # program's 157 suggestions-recommendation 57: the sub-type implementing ISerializable should be responsible for serialization of the parent class,
Recommendation 57: the sub-type implementing ISerializable should be responsible for serialization of the parent
The php parent class and subclass read data code is a second-level classification program code. this program can find the child class data based on the parent data. the code is as follo
In the dojo. DND package, Dojo provides support for the drag and drop effects of page elements. The key classes used to achieve the drag effect are as follows.
Next, let's take a look at the usage of these four classes.
First, define two divs and a list:
Drag Module 1
Drag module 2
List 1, entry 1List 1, entry 2List 1, entry 3List 2, entry 1List 2, entry 2List 2, entry 3
Define
The advantage of Asp.net is to quickly build applications. For some of the most basic data addition, deletion, modification, and paging event or style settings, you can write a virtual method in the parent class for the subclass to call, if the subclass needs to derive a change or simply not use a method of the parent class
This article mainly introduces the PHP parent class to invoke the subclass method code example, need friends can refer to the following The discovery today of the need to call subclasses in the parent class has never been used before and is also possible through practice.
The reason why the parent class clears the floating (clear the floating code and place it in CSS for easy calling), floating css
Floating factors are often applied in the production of static Web pages. For example, to make block-level elements not exclusive to a row, float is often applied. However, the application will find that, after the subclass floating is
Original article, if reproduced, please indicate the source: http://blog.csdn.net/yihui823/article/details/6932952
After separating a piece of code and business logic, let's take a look.
Base class:
Package testjava;/*** base class */public class basebook {private int type =-1; Public basebook (INT type) {This. type
The advantage of Asp.net is to quickly build applications. For some of the most basic data addition, deletion, modification, and paging event or style settings, you can write a virtual method in the parent class for the subclass to call, if the subclass needs to derive a change or simply not use a method of the parent class
A glimpse of the source code of the AbsSeekBar parent class of the SeekBar Sliding bar in Android
One of the controls in Android is ProgressBar, and one of its subclasses is AbsSeekBar. I believe many children's shoes are interested in the parent category of this drag bar! Especially when I see the progress bar of Nete
Package fifth day; public class Person {public void say () {System.out.println ("I am the Say method for person");}}The subclass student is as follows:The fifth day of the package, public class Student extends person{//overrides the parent class's say () method @overridepublic void Say () {System.out.println (" I am student's say Method ");} public static void Ma
The Dom-class module is the operation of dojo with respect to an element class attribute (attributes differ from attributes), and the main methods are:
Contains determines whether an element contains a CSS class
Add a CSS class for the element
Remove removes
. Therefore, when declaring the "Ostrich" category, it can still inherit the "bird" category, however, the "Flying" method inherited from the "bird" class must be rewritten in the "Ostrich" class, and the method in the parent class must be reloaded in the subclass.
In the following example, the declared Person
New Person classSubclass of Person StudentTeacherToday I think of the database encapsulation, because the query results are inherited from Nsmanagerobject, but his sub-class properties are not necessarily the same, so I think I can not judge after the query that he is the subclass and according to the properties of the subclass to assign values, So first I want the class of the object to be stored in the ar
have "bird" characteristics, so in the declaration of "Ostrich" class is still able to inherit the "Bird" class, but must be in the "ostrich" class in the "Birds" class inherited from the "fly" method to rewrite, you need to overload the parent
to the constructor of the parent class in the subclass? You can use the method shown in Figure 2-14 to explicitly call the constructors with parameters of the parent class when constructing child classes.
Example 2-14# Include Class animal{Public:Animal (INT height, int we
After reading the article "using Hibernate to realize the tree structure infinite level classification", I also want to post and share the complete demo (including source code) of the functional module tree that I use in all the projects I developed. In fact, in my blog has been posted, due to the time relationship did not properly tidy.
The functional module tree is something that is used in almost every project, and the advantage of using
Code PackageCom.qhong; Public classMainextendsBImplementsa{ Public Static voidMain (string[] args)throwsException {NewMain (). Action ();; } Public voidaction () {System.out.println (Super. x); System.out.println (a.x); //System.out.print (x); }}Interfacea{intx = 0;//default is public static final}classb{intx = 1;}Output:10If the comment is canceled, the error:Error: (+) Java: Reference to x is ambiguous com.qhong.b variables x and COM.
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