Welcome back in this chapter, we are going to look at the Scotland fundamentals part three, so to
speak, so we are going to start with a radius, then we're going to look at lumber expressions, then
we're going to see how the visibility modifiers work because we have we used them already quite a bit,
but we haven't really looked into them, so we haven't really touched them too much and that's what
we will look at in this chapter.
Then we're also going to see how to use nested and inner classes because we've seen our classes work
and how object oriented programming works.
But there is a thing called nested and in our class, and we're going to see how to use that.
Then we're going to see how to use the safe and unsafe cast operator.
And then finally, we're going to look into exception handling.
So what should happen if we get an error or what can we do in order to catch the error and not make
our application suffer by that error?
All right.
So often really depends on what kind of error we have, but many errors we can just catch them.
We can just do something else or we can just not do anything.
And it will at least not crash the application, even though the application might not exactly do what
we wanted it to do.
But at least it's on kind of be suffering in terms of crashing.
And when that happens and a user has your application and crashes, you might accept that once, but
he's not going to accept it multiple times.
So that's why it's super important to look into that topic as well.
OK, so let's get started with this chapter in the next video.
So see you there.