Can a constructor call other methods of this class?

Yes, it can call the private properties of this class, so why not call other methods of this class? And after triing, it does call.

public class person {private string name = "aa";

public person(){

setname("dsd");

public void setname(string name) {= name;

public static void main(string args)

person p=new person();

No, you can only adjust the other constructors of this class or the constructors of its parent class.

Yes, you can call other methods ...... this class

It is called in the form this(), with the actual parameters of the other constructed lists in parentheses.

Note: The first article of the executable statement must be written in this constructor.

The parent class member variable should be used in a child class, not this.

1. You need to know what the constructor is used for, and the constructor is used to construct object instances. A member method, on the other hand, is used to perform a function and requires an object instance to call it. So the order is:

The constructor is executed to obtain an object instance, and the object instance calls a member method. So it's not possible to call the constructor in the member method, I don't know why you'd want to do that.

2. super can only be placed in the first line of the subclass construction method. There's no need to call this method anywhere else.

3. If the access rights of the member variables of the parent class are public and protected, they can be assigned in this way. However, the general access rights should be set to private

First question:

The first method in the left figure is the constructor, and the show method is the member method, the member method can be used in the constructor, and the constructor cannot be called explicitly, the constructor will be called in the new operator, that is, in the show method, new student(); Of course, in the above example, if the show method is called in the constructor and the student method is new, it will cause an endless loop, and the program will crash after running out of memory.

Second question:

The child class has all the member variables and member methods of the parent class, so the member variables of the parent class used in the child class should be referenced with this, not super, and the method name can be written directly when referencing the parent class member method, without using this reference, in addition, there can also be a method with the same name as the parent class in the child class, which is regarded as a method override, and the method with the same name of the child class will replace the parent method, that is, the method of the parent class does not work.