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‫Welcome back.

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‫And this video I would like to talk about members and therefore, I just create a new class here and

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‫I'm going to call it members.

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‫Now, in this member's class, I want to go ahead and create all the different types of members that

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‫are relevant when working with object oriented programming.

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‫So we have private fields, for example.

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‫So let's call a member private field here, and that would be something like private string

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‫member, name ten private string job title.

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‫So these are just examples of members.

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‫So they can be private fields, they can also be public fields.

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‫So remember they called member fields, so.

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‫This would be public field and that's public int h.

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‫So just as an example, right, then a member could have a salary.

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‫All those kind of things.

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‫So all of these variables, these fields, these global variables, they are members of this class members.

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‫So then there are properties which are also members.

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‫So let's say I want to have a property, I'm just going to prop here and then double tap and I get this

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‫property and it's going to be the string job title.

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‫Job title.

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‫So we have that here, which was a private field and now I create a property with the same name, but

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‫with a capital J.

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‫And in here we have a getter and setter, and they are also created, automatically created.

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‫But we can also go ahead and create the manually, as you have seen in the last video.

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‫So let's just do that real quick.

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‫So instead of get and set with the standard here, I want to get I want to return the job title and

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‫instead of a standard setter, I want to use something like job title should be set.

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‫So job title is going to be the value that is given to us.

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‫All right.

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‫So that's our get set and let's clean it up so that it looks a bit better.

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‫So this is a member property which exposes job title safely and generally.

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‫So, you know, just remember properties start with a capital letter, then we have a member which is

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‫a method.

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‫So let's create a public member method which can be called from other classes.

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‫As you know, with public methods they can be called from other classes and methods within a class are

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‫called her members.

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‫So the members class.

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‫In our case, this is a class called members, but whatever the name of the class would be, so let's

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‫say it's student.

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‫So you have a class with all of your students, all the information about students and the skills of

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‫students and so forth.

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‫Then a method in there would also be a member.

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‫So let's just create an example.

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‫Public void intro juice thing and bool is friend.

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‫And what I want to do in here is simply introduce someone and if it's a friend then I want to introduce

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‫myself in a, let's say, more private way or something like that.

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‫All right.

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‫So let's say we have just a different another one.

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‫I'm going to add another field here, which is going to be a celery.

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‫So private and celery.

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‫And now if it's a friend, I want to tell them about my celery as well because I wouldn't share that

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‫with somebody else.

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‫But instead of using a public method, I'm going to use a private method for that.

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‫So I don't want to do that within the introducing itself.

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‫I want to create a different method for that and it's going to be private void sharing private info

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‫and it's going to write something like, hi my well actually just call my celery.

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‫My celery is the celery.

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‫Now, of course, we need to know the celery or there has to be a celery value.

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‫So let's just set that as a standard value.

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‫So minimum 20,000, that's how much our members minimum celery is going to be.

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‫So that's going to be the shared private info and I use this bool is friend whatever introducing is

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‫called to call sharing private info or not so if is friend then I want to call share private info.

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‫Otherwise I'm just going to write something like.

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‫LS CW Hi, my name is Curly Brackets zero and my job title is Curly Brackets one and then I'm Carter

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‫Brackets, two years old.

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‫And now we of course need all of this information.

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‫So the one was the member name.

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‫Then we had the job title and we had the H.

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‫So all of those are given if somebody is not a friend because our friend would usually know these kind

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‫of things, our job title member, whatever.

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‫But if we want to introduce some new information to our friend, it's going to be something like my

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‫salary.

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‫Well, it's just an idea that I came up with that's private that I wouldn't tell somebody on the street

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‫usually.

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‫And then we even have a different member, which is a constructor.

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‫So a constructor is also a member.

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‫So if I create a member's constructor here, this is going to be a member.

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‫So the constructor is a member console right line and it's going to be something like object created,

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‫very simple.

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‫So whenever a member is created, we simply have this object created.

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‫And what we also should do in here is because we don't have any values for our member name, job title

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‫and salary.

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‫Actually, we can get rid of that salary here and we're going to initialize it just in members.

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‫So we're going to say H is going to be, let's say 30 then member name is going to be Lucy.

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‫Then we have the salary and Lucy earns a great amount of $60,000 or euros, whatever you like.

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‫And then we have what else do we have?

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‫So we had salary member name, job title.

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‫So what's her job title?

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‫Let's say she's a developer

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‫and we're not going to go into detail what type of developer she is, but that's our members constructor.

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‫And the constructor itself is a member of this class.

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‫And finally we have something called Final or Destructor, which is also a member, and the destructor

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‫is created with this curly sign here, and then the name of the class, which is a members or which

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‫is members simply.

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‫And this final user or destructor cannot be defined in structs.

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‫It's only possible to do that within classes and.

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‫A class can only have one final loser.

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‫So we have seen that we can create multiple constructors, but we can only create one destructor per

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‫class and that final sizer cannot be inherited or overloaded and it cannot be called.

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‫So it's only there for this specific class.

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‫So whenever the object runs out of scope, so our members object runs out of scope, this file analyzer

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‫will be called and let's just create one.

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‫By the way, it's there for clean up statements.

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‫So only cleaning up is useful here.

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‫And let's just write something onto the console, something like deconstruction of member object.

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‫So whenever the object is closed or deleted or runs out of scope, that's when this method here or this

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‫final loser is executed and empty final losers.

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‫So if this should be empty, you should not use it.

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‫So only if you have something useful to do in here.

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‫You should ever use a file analyzer because otherwise it just uses up performance.

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‫So you just have needless loss of performance because when the class contains the file analyzer, an

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‫entry is created in the finalizing queue and when if analyzer is then called, the garbage collector

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‫is invoked to process that queue.

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‫And well, that's why you shouldn't create an empty finalize because it's just going to add something

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‫into the queue which is not doing anything and that still reduces performance.

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‫All right.

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‫So that's generally the file analyzer or the destructor.

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‫And in order to test that, it's quite difficult because we if we run out of scope, which in our case

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‫is if we run out of the main method, then there's simply not much that we still see because our program

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‫simply closes, right?

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‫So let's just create a member's object and I'm going to call that number one.

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‫It's going to be new members.

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‫And this new members or number one is simply going to be our Lucy.

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‫So we don't have a constructor where we set the age and the member name and the salary, all those kind

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‫of things.

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‫Because we keep it simple in this video because it's mainly about the general idea of members and to

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‫finalize or the structure.

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‫So now let's call number one and let's let her into use or let's call the introducing method.

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‫So now she's going to introduce herself and in here we need to give a boolean.

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‫So I'm just going to say, okay, I am a friend, so please tell me your salary.

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‫So because that's what this introducing method does.

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‫And by the way, it's going to call this sharing private info method within the introducing method.

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‫So that's the only way around of getting something of a private method outside of that class by calling

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‫the private method within a public method.

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‫So this sharing private info is a private method.

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‫So the access modifier is private, but this public method here can be called from outside, which means

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‫it can be called within our program class, for example.

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‫And then here, if I try to access that sharing private info, it's going to say members share and private

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‫info is inaccessible to due to its protection level.

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‫So I just just cannot access it.

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‫Now in order to show you this deconstruction of member object.

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‫Done.

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‫Yeah.

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‫This call here, we need to get out of scope.

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‫Which means as soon as we close the static void main.

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‫So as soon as we get, let's say, to line 18, in my case, that's when the final user is called.

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‫So that's when member one is going to be destroyed.

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‫If we run that, we will see it for a very, very short second.

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‫So let me create it.

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‫Actually, it's just going to close directly.

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‫So let's write console.log, read key in here.

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‫So you see something so that we are my salary is so she.

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‫Well, the object is created.

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‫She tells us the salary because we are a friend, as we said here.

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‫True.

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‫And now if I press enter for a split second, you can see that there is some text there.

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‫Actually you don't see it.

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‫But in the end, after I press the console key, I run into this line here and then the code is executed.

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‫So in order to see that we will need to use debug here and we will need to import debug so show potential

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‫fixes.

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‫All enter use system diagnosis.

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‫Are agnostics just going to do that debug thought?

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‫And here now I can call something bright.

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‫And I just want to write onto this output here and I'm just going to call just that.

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‫So deconstruction or destruction because it's destruction of members object.

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‫What is happening.

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‫So now let's run it again.

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‫Actually without the key.

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‫We don't need that anymore because we're fine.

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‫If the program simply closes afterwards, we're just going to run that.

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‫And we see here the structure or destruction of members object.

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‫And actually if we get back, we just had their console key.

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‫So you can see that it's not executed.

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‫So we don't see this information, but only after we press enter that we saw it for a second.

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‫Deconstruction of a member object or a member of this object was shown.

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‫So that's how you see how structures or file analyzers generally work and what they do.

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‫Great.

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‫So now you have seen the different types of members.

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‫There is a little more to know about members, but just check out the documentation.

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‫Then you will see a little more detail what members are and what they do.

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‫But for the most part, what we have seen here is going to cover pretty much most of the things that

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‫we're going to handle on use in the future.

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‫Great.

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‫So see you in the next video.