18. Java Helsinki Uni MOOC programming 1 part 4! Introduction to OOP Part 4 of 4

Another section completed! The final section of Introduction to OOP and what a great section, we finish off with two multi part challenges which are pretty good fun and get you thinking

00:00 Intro
01:09 Challenge: Song
04:37 Challenge: Film
12:00 Challenge: Gauge
21:54 Challenge: Agent
29:27 Challenge: Multiplier
33:15 Challenge: Statistics (4 parts)
49:20 Challenge: Payment Card (6 parts)

Good luck and happy coding!

[timoti]

Thanks for sticking to this, helping me take my first steps in programming !

[nick_at_night]

Hey Duncan! Again, thanks for making these videos. They're an amazing resource.

I have a question about using "this." in the methods we create in our classes.

In the method we created called Average (as seen in the 'Statistics' exercise (around 39:58 in this video)) - why is it important to return "this.sum / this.count" - instead of simply returning " sum / count" ?

I guess I'm asking why is it that we need to return the "this.variables" instead of just returning the "variables" that we define at the top of the class?


Thanks so much for making these.

[zizothegreat]

when will you post the rest of Part4? I'm really stuck on the file creation part and keep getting errors or the server isn't working correctly. Please post the videos, they're really helpful when I get stuck