[Original] parent class (base class) and subclass BASICS (C #, java)

The idea of oo programming has become more and more common,

However, some basic things are still vague,

For example, the call sequence of the base class and subclass.

Here I use c # as an example to show you how:

(The capability is limited. If you have any flaws, please kindly advise ^_^)

For the following code
Public class baseClass
{
Public string a = "baseClass ";
Public baseClass ()
{
A = "initialize baseClass ";
}

}
Public class ExtendClass: baseClass
{
Private string B = "ExtendClass ";
Public ExtendClass (): base ()
{
B = "initialize ExtendClass ";

}

}
If we write code like this
BaseClass a = new ExtendClass ()
Procedure
1. Private string B = "ExtendClass ";
2. Public string a = "baseClass ";
3. public baseClass ()
{
A = "initialize baseClass ";
}
4. public ExtendClass (): base ()
{
B = "initialize ExtendClass ";

}
This is explained in the example of c #. Of course, the execution processes of other languages may be different. As far as I know, java's execution process is not only the same as c.

In Java, this declaration method is called object transformation object declaration. Its execution process is as follows:
1. Public string a = "baseClass ";
2. Private string B = "ExtendClass ";
3. public baseClass ()
{
A = "initialize baseClass ";
}
4. public ExtendClass (): base ()
{
B = "initialize ExtendClass ";

}

Vb.net is

1. Public string a = "baseClass ";
2. Public baseClass ()
{
A = "initialize baseClass ";
}

3. private string B = "ExtendClass ";

4. public ExtendClass (): base ()
{
B = "initialize ExtendClass ";

}
Now, let's write it here and enjoy your work.

Learn from each other ~ Common progress ~

O (partition _ partition) o...