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Welcome back.

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And this video, I would like to introduce you to classes and objects, and they are a very important

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aspect of object oriented programming.

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We've seen class before.

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For example, our main activity class is one of those classes, and a class is, so to say, a blueprint

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of an object.

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So let's have a look at a specific example.

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So let's say I have this very beautiful car here.

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And this car.

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There's going to be our class that I.

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And this car has certain properties.

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So props.

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And those properties would be, for example, its maximum speed.

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Then it could be the amount of tires it has.

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So, Max Speed tires.

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Then the amount of windows, maybe even or doors.

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So there are cars with two doors that are cars with three doors and so forth.

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So.

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Force would be another property, and then this car has a bunch of skills.

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For example, it can drive, so I'm just going to call this one skills.

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And there will be.

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Drive.

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Then what can the car else do?

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Well, it can break, hopefully.

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Because otherwise we might be screwed, so it drives, it breaks, it has a bunch of other skills or

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capabilities in a class, these properties could be variables.

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And those skills could be methods.

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So these are things that we have seen already.

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Now the only thing we need to do is we need to create our own class.

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So now, as I said, a class is a blueprint.

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So when I create a class, I create a blueprint for car objects.

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So now I can go ahead and create a car with a speed of, let's say, 200 miles per hour.

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I can say this car is going to have four tires and it's going to have two doors because it doesn't need

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any more, and it's going to have the skill of driving.

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And of course, it's also going to have the skill of braking, but it's going to also have a turbo boost

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mode.

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Then it's going to have the steering capability and so forth.

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All right.

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And now, of course, this will be my object here.

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So this will be another car that I just created this super fast turbo car that I've just created.

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And as I said, it just has this one big door here doesn't need more right or one door on one side and

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one door on the other side.

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Now the trick question here is what is the front of this car?

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Is it here or is it there?

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Well, it doesn't really matter, I'm just joking.

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So that's one object, but now I can go ahead and create a bunch of these objects, so now I can go

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ahead and create a bunch of cars and they all look a little different and they all have different colors.

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So another property could be the color, for example.

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That's a good one.

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Wheel size could be another one and so forth, so you can see you can have all of these different properties.

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And now this.

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Is the difference between classes and objects?

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A class is just a blueprint where we define all of these values, such as properties and skills.

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And then the objects are the individual cars that are produced, for example, and this can be used

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for pretty much anything, right?

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You could say a human.

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So what are the properties of humans?

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Well, we have a certain age that age changes.

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Then we have a name.

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We have eye colors, hair colors and so forth.

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So all of these things would be our properties.

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And then we have skills such as breathe or sleep or walk jump.

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All of these things would be our skills, and those skills would be our methods that we would create.

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All right.

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So this is just a quick introduction to classes, and we're going to see how we can use classes, how

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we can build our own classes, give them those properties and those skills or methods and how we can

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create objects of those.

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All right.

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So I'd say, let's dive right into it because it's a lot more fun in practice.

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So see you there.