what constructor method

In the face of Java rich knowledge materials, Many beginners are inevitably confused, what to learn, how to learn? The following is a basic knowledge of Java to do a concise summary to help you comb the learning ideas, quickly see it!Method/step1

This keyword has three main applications:1.this calls the properties in this class, that is, the member variables in the class;2.this calls the other methods in this class;3.this calls the other constructor methods in this class, which are placed on

These days to see the class in the inheritance will use this and super, here do a little summary, with you to communicate, there are errors please correct me ~First, thisThis is an object of its own, representing the object itself, which can be

The JavaScript boolean.constructor () method returns a prototype Boolean function that references to the creation instance.Grammar Boolean.constructor () return value: NA The following are the details of the parameters: Returns the

1>static: Static modifierStatic represents the meaning of "global" or "static", which modifies member variables and member methods, and can also form statically static blocks of code, but there is no concept of global variables in the Java

The This keyword has three applications: (1) This invokes the attribute in this class, that is, the member variable in the class, (2) This invokes the other methods in this class, and (3) this invokes the other constructor methods in this class, and

Construction MethodIn development, it is often necessary to define the object's property value while creating the object, such as the employee's entry company should be clear about his name, age and other attributes.The construction method is the

The object class is the parent class of all classes superclass classCommon methods of the object classThe 1:public string toString () returns the strings representation of the class2:public Boolean equals (Object obj) refers to whether an other

fifth chapter Object-oriented Foundation first, the topic 1. What is an object. How to create an object. Classes are one of the most reusable data types in object-oriented languages, and variables declared by a class are called objects.Create an

The This keyword has three applications: (1) This invokes the attribute in this class, that is, the member variable in the class, (2) This invokes the other methods in this class, and (3) this invokes the other constructor methods in this class, and

namespace Home\controller; Use Home\common\bbasecontroller; Class Indexcontroller extends bbasecontroller{ public function __construct(){ parent::__construct();}public function test(){ echo "自动调用父类的构造方法";}public function test2(){ echo

Constructor is used to initialize the Class Object. Unlike other members of the parent class, it cannot inherit from the quilt class (subclass can inherit all member variables and member methods of the parent class, but does not inherit the

js| Objects | functions Jscript.js file/**//* JScript FilesThe plural is the sum of an imaginary number and an imaginary number, and the imaginary I is the square root of 1.*/ /**//* The first step in defining a class is to define the constructor of

Emmmmmm is really not written in Java for a long time,Because the project needs, and recently must pick up again, although a lot of things have been forgotten almost ....And then found that super and this silly confused ....Write a post to

In the Java keyword (v)--this We say that the This keyword is a reference to the current object. The Super keyword in Java is a reference to an object that represents the parent class. 　　We analyze the phrase "reference to the parent class object",

Inheritance is also an important object-oriented feature, inheritance is a class-to-class relationship, in layman's terms the dog belongs to the animal class, then the dog class inherits the animal class.Inheritance in Java is single-inheritance,

Understanding of constructor.The constructor generally needs to meet the following rules:(1) the method name must be consistent with the class name.(2) do not declare the return type.(3) it cannot be modified by static, final, synchronized, abstract,

This paper summarizes the basic knowledge in Java, including: 1, initialization of objects, 2, 2, inheritance, initialization of objects, 3, about construction method, 4, public, private and protected;5, abstract class, 6, final keyword, 7,

Today I would like to share with you about the construction method of knowledge!Definition and function of construction methodA construction method is a special type of method . When an object is created, the constructor is used to initialize the

-------Android Training, Java training, look forward to communicating with you! ----------Object orientedIs an idea that simplifies complex things and turns the process-oriented executor into a conductor. The process is actually a function, and the