UML class diagrams
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- Опубліковано 16 лип 2024
- We've updated our video!
Learn how to make classes, attributes, and methods in this UML Class Diagram tutorial. There's also in-depth training and examples on inheritance, aggregation, and composition relationships.
UML (or Unified Modeling Language) is a software engineering language that was developed to create a standard way of visualizing the design of a system. And UML Class Diagrams describe the structure of a system by showing the system’s classes and how they relate to one another.
This tutorial explains several characteristics of class diagrams. Within a class, there are attributes, methods, visibility, and data types. All of these components help identify a class and explain what it does.
There are also several different types of relationships that exist within UML Class Diagrams. Inheritance is when a child class (or subclass) takes on all the attributes and methods of the parent class (or superclass). Association is a very basic relationship where there's no dependency. Aggregation is a relationship where the part can exist outside the whole. And finally, Composition is when a part cannot exist outside the whole. A class would be destroyed if the class it's related to is destroyed.
Further UML Class Diagram information: www.lucidchart.com/pages/uml-...
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00:00 Introduction
00:20 Class
01:08 Attributes
02:06 Methods
03:05 Visibility
4:04 Zoo system example
4:29 Lucidchart
04:59 Inheritance
06:22 Abstraction
06:55 Association
07:15 Aggregation
08:00 Composition
08:46 Multiplicity
09:37 Real-world example
12:06 Conclusion
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My professor couldn’t explain what you just made crystal clear in 10 mins throughout 10+ hours of lectures. THANK YOU!
which school u from girl
I don’t believe that tbh.
10+ hours? seriously?! I find that very hard to believe a professor would spend *that* much time in UML
I bet your professor "cut down" the trees so he could pave the road.😀
@@donaldkeith139I wouldn’t be so sure about that. I’m currently living through it
I used to be a professional trainer and consultant in object-oriented analysis and design with UML. And I was a product manager for UML modeling tools. I found this video to be extremely effective in describing how many of the basic OO concepts apply in UML class diagrams. Very impressive!
The only video you ever need to watch about UML diagrams. Great job.
hands down the best animation and explanation I've seen, clear and straight to the point. amazing animation and it matches what the narrator is saying, phenomenal.
I wish this man could present every tutorial that i will ever need. he makes it so easy to understand. thanks man
you are really the best, easy and clear illustration.... everything is now clear for me! thank you.
two semesters and today is the day I understood class diagrams
Thank youuuuu
made it super easy, It is impossible to get bored while watching you thanks man!!!
you are the best tutor I have ever listened to 👌💯
You are da best. last of the video fixed most of my confusions about UML diagram.
thank you for the effort in making the concept so easy to understand.
very clear illustration. easy to understand. thank you
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Thank You So Much for This Amazing Lectures 😁
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damn bro you were the only one who explained this on point and simply; with the zoo example and pictures bro you are genius. consider to be part of university faculty....now i understand this thanks to you 7 starssss !!!
simplest and most comprehensive explanation, thanks
thank you Mr Bear, very energetic joyful and simply served video!
woow very precise clear, explanation. After watching so many and after the exams here I found you. I am still glad I found the video to learn it precisely. Thank u
Clear illustrations.Nice. Looks like a channel with million+ subs
Mashallah brother youre the best i needed this for an exam tomorrow, lets see how it goes
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Nice and clear explanation.. it help me a lot cause im a slow learner. This one is easy to understand. Thanks a lot!!
Thank you man so much for explaining class diagrams in such an easy way
I love your video. It's so easy to understand and implement!
Brilliant explanation! Thank you
Btw protected visibility generally has 2 different meanings, depending on the language used. In some languages, the video definition applies. In some other languages, like Java, it additionally allows access to other classes in the package.
Excellent and concise explanation!!
the class diagram is a really great tool!
great video Mr. Lucid, it's really beautiful and coherent. Thank you.
The best tutorial video ever!
Wow. Best explanation ever!
Thank you for teaching. :)
So clear and useful, thank you!
thank you man! That was cleanest explonation!
Best explanation for Class Diagram, Thank you very much
This video is very clear thank you!
This was simply beautiful! thank you!
You explained that so well, thank you so much
perfect explanation, good animation, thank you
Great content. Thank you.
Thank you for making it easy to understand!
I watched the video that was recommended to me by my instructor, and I will say it was very helpful and very well done. I have a question though and that is because I am not familiar with Lucid Software so I don't know in what section of it do I go to in order to drag the diagrams over so that I can add to them what I need to?
Thank you for the awesome video, the real life use case UML is actually something I've been looking for for a long time !
Attention : The link for further UML Class Diagram information doesn't work.
This was awesome, thank you!
You explained it wonderfully 😍 I can understand with once go
Thank you so much for your video!
pure gold!
great explanation, thanks
I couldnt understand it in german tutorials as they tend to smartassery often but u sir did a honorable job explaining this!! Thx
that sounds painful
Very useful for me ,thank you a lot
Super Explanation. Thanks a lot
Thank you so much Bear!!! extremely helpful wish you had done real life examples for all relationships tho and talked on generalisation and dependency!! anyways great video!!! lifesaving fr!
Great Video! Thank you :)
Great demonstration.
Very helpful. Thank you.
Great video! Make me quickly know how to draw UML class diagrams.
It is really easy to understand, thanks
Well explained relationships, thank you for sharing.
this video was very helpfull thanks man
Thank you for this explanation
Nice explain❤ Thank you!
You're the best mr Bear
Bunch of thanks for nice expalanation❤❤
great explanation!!
dil jeet liya bhai
Really helpful, thank you
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Thank you!
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Thank You soooooo much
Brilliant Bear - some man - Thoroughly enjoyed your video :D
10:55 Quick question: Why the fields and methods of User aren't protected (#)? Shouldn't a Customer class object know its password for example (To execute updateProfile() method)?
I don't understand what Customer and Administrator classes are getting from the inheritance of user. Also, Shouldn't User be Abstract?
Awesome video regardless 🙂 Wish I would watch it before!
Your question is just improvement of what you're suggesting right now...
User class is the account credentials of Customer and Admin class to enter the system so they are required
Thanks!!
Good tutorial!
very well explained.
is there a mode for describing your methods? or do you just have to name them well?
it's very useful and it save my final exam
Yes thank you so much , thank you this might be what I just need to diagram
it was so helpful thank you
amazing video thx
Great tutorial!
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Very very interesting, loved it❤, thanks
u r the best
good job man 👍
awesome bro!
Hey I've seen this one, it's a classic!
i was flabbergastingly bamboozled by this stupefying explanation
VERY NICE, THANK YOU
thankyou so mush it helps me much.
wonderful video
Thank you
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Amazing video
this guys name forged his path in life
the "has-a" relationship does not always imply a one-to-one relationship. The "has-a" relationship can represent various cardinalities.
🤓
thank you for clear explanation. I have a question in mind. What does dashed lines mean.
dam,
the explanation was perfect.
thanks!
it was very usefull thank you so much 😍😍