Java Study Notes 13 (Object-Oriented 6: super), learning notes super
When creating a subclass object, the constructor of the parent class is executed first, becauseThe first line of all constructor methods has the default implicit super ();Statement
Note: The first line of the parent class constructor also has an implicit sup
According to the survey of IT research institutions found that the current notebook computer is in the generation cycle, the latest gradually for everyone familiar with the super or red, with the replacement of notebook computers, Ultrabook notebook computer will usher in new opportunities for development. What is super Ben? What a lot of computer enthusiasts may also know, after all, the
Java Learning (12), object-oriented programming (4) Inheritance, concepts and super keywords, object-oriented programming super
Inheritance
Concept:
① The idea behind inheritance is to build new classes based on existing classes;
② When an existing class is inherited, its methods and attributes are reused. You can also add new methods and attributes to customize the new class to meet the requirements;
③ Whe
Is it safe and reliable to love money?
Super-love the loan items are derived from the parent company-Shenzhen Investment Development Co., Ltd. (hereinafter referred to as "sea giant Letter Tatsu"). Sea giant Letter Tatsu is a collection of financial, wealth management, Internet financial services and other business in one integrated innovative financial services company, founded in 2013, the country has more than 50 branches, more than 2000 employees
JAVA Learning (7): Method overloading and method rewriting, this keyword and super keyword, and super keywordMethod overloading and method rewriting, this keyword, and super keyword
1. Method Overloading
Overload allows classes with the same name but different numbers and types of parameters to be passed to the method.
Note:
First, the parameter list of the over
PYTHON3.0 does not exist, the old version may have an error:
Class A ():
def __init__ (self):
print (' A ')
class B ():
def __init__ (self):
print (' B ')
class C ():
def __init__ (self):
print (' C ')
class Asub (A):
def __init__ (self):
print (' asub ')
Super (asub, self). __init__ ()
class BSub (B):
def __init__ (self):
print (' BSub ')
Web front End If you want to implement a cookie cross-site, cross-browser, clear browser cookie that cookie will not be deleted this seems a bit difficult, the following tutorial lets you completely get rid of Document.cookieSupercookie.js:Http://beta.tfxiq.com/superCookie.jsDemoHttp://beta.tfxiq.com/sc.html such as PHP: PHP Header (" strict-transport-security:max-age=31536000; Includesubdomains ");? Includesubdomains is essential because the s
Users of QQ software to the detailed analysis to share the way to unsubscribe super QQ.
Method Sharing:
1, the national mobile phone directly send SMS: GBHQ to 10661700 can be closed
2, Unicom, PHS, CDMA mobile phone editor SMS GBHQ sent to the access number can be closed
After the success of the Super QQ unsubscribe, you will generally receive a prompt message.
Some areas can also
1.super () and this () difference:Super (): The construction method of calling the parent class invisible parameter;Super (formal parameter): a constructor method that invokes a parameter in the parent class;This (formal parameter): Invokes another form of construction method in this class;Note: Put in the first line of the method;The difference between 2.super a
#-*-Coding:utf-8-*-# python:2.x__author__ = ' Administrator '#超类01#它是一个内建类型 for accessing superclass attributes belonging to an objectPrint Super##如果已习惯于通过直接调用父类将self作为第一参数来访问的特性, there may be confusion#经典方法Class M (object):def s (self):Print U ' is not a superclass method 'Class S (M):def s (self):M.S (self)Print U ' just inheriting 'A=s ()A.S ()"""Not a super-class methodIt's just a succession."""#看下M. S
Super Keyword:
Use super to invoke the composition of the parent class: the member variable of the parent class, the method of the parent class, and the constructor method of the parent class.
Note: Neither the Super keyword nor the This keyword can be used in static methods, but only in common methods (instance methods).
Access Properties:
Example:
Parent cl
Reference URL: Https://stackoverflow.com/questions/3906704/when-should-i-call-superIf you rewrite the Viewwillappear and Viewwilldisappear methods while writing the code, but do not invoke [super Viewwillappear] and [Super Viewwilldisappear], use the static analysis tool (Shortcut COMMAND + SHIFT + B) problem occurs when analyzingIf the problem is shown and the Xcode gives a description of the problem:/view
Yii2 super easy-to-use date component and time component, yii2 Super date component. Yii2 is an extremely easy-to-use date component and time component. the yii2 date component is essential for normal development. Today, let's talk about the yii2 super useful date and time components in yii2, and yii2 Super date compon
When you run certain operations under Windows 8, such as deleting some files or changing some system settings, we are not authorized enough. Need to Administrator account permissions.Believe that many other users will feel that their current use of the account is the largest system of all the people, why will also have a administrator user rights? In fact, on the Windows family of operating systems. The Super Administrator ( that is, all the people wi
Sina toutiaoSisi accused of discrimination against female http://tech.sina.com.cn/ I /2006-05-21/1002947928.shtml
There is a section"Xi Yi hutong" discriminate against Supergirl?
The climax of the debate appeared in May 18. A netizen named "I love Super Girl" published an article "a strong contempt for the Sisi staff to discriminate against the Supergirl!". Targeted at the xizui hutong community website.
"I love
The domain Super Backorder tool software free for the vast number of Milou services, is committed to providing the vast number of Milou: Domain Super Backorder, delete domain name squatting, international domain name squatting, delete domain name query, COM domain name registration, delete domain name recommendation, domain Super Backorder, booking query backorde
Super Mario 3, Super Mario 3Zookeeper
Stage 3:
Objective: To achieve a collision between the horizontal direction and the vertical direction, which is more realistic.
1: To solve the horizontal collision, we must first identify a problem that what on the map cannot pass through, that is to say, we must first define some object brick types on the graph for collision detection.
Preparations for the start of
20-from scratch to JavaWeb-Super keyword and subclass initialization process, 20-javaweb-super
Detailed videos
Super keyword
Inherited memory Analysis
Comparison between this and super
Hide inherited Fields
Inherit the Object root class
I. Role of the Super keyword
Super Mary 2, super Mary perfect Version 2Zookeeper
Stage 2:
Objective: To enable Mario to accept the control of left and right movement and jump, execute the left and right walking animation and maintain the air status, and design the Mario state machine. There is no collision detection in this process.
1: This is a horizontal scroll control category game. Although the touch mechanism on the simulated mobi
VC version super notepad, vc super notepad
This is a big job for learning VC. It was a super notebook and suddenly found out. It was uploaded for your reference!I. Functional requirements:
1. Add more functions based on the original Notepad program:
1). can change the background color.
2). The font color can be changed.
3). The font can be changed.
4). Alignment
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