UML class diagrams
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- เผยแพร่เมื่อ 31 พ.ค. 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
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
two semesters and today is the day I understood class diagrams
Thank youuuuu
you are really the best, easy and clear illustration.... everything is now clear for me! thank you.
you are the best tutor I have ever listened to 👌💯
made it super easy, It is impossible to get bored while watching you thanks man!!!
Thank you man so much for explaining class diagrams in such an easy way
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.
simplest and most comprehensive explanation, thanks
very clear illustration. easy to understand. thank you
I understood only a tiny bit more than when I had a lecture about this.
That being said this is probably the best tutorial about the subject.
U guys explain complex things so easily..thank u
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 !!!
Amazing tutorial !!!! Clear explanation Thank you !
The best tutorial video ever!
thank you Mr Bear, very energetic joyful and simply served video!
Clear illustrations.Nice. Looks like a channel with million+ subs
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.
Mashallah brother youre the best i needed this for an exam tomorrow, lets see how it goes
only allah is the best 🙏🙏
@@ethanwasme4307 Then why you wrote Allah with lowercase. It is a big sin.
sorry, i shouldn't' say such a joke@@zafer5695
Nice and clear explanation.. it help me a lot cause im a slow learner. This one is easy to understand. Thanks a lot!!
Best explanation for Class Diagram, Thank you very much
Excellent and concise explanation!!
the class diagram is a really great tool!
Thank you for making it easy to understand!
Brilliant explanation! Thank you
great video Mr. Lucid, it's really beautiful and coherent. Thank you.
Wow. Best explanation ever!
I love your video. It's so easy to understand and implement!
This was simply beautiful! thank you!
Thank you for teaching. :)
perfect explanation, good animation, thank you
You explained it wonderfully 😍 I can understand with once go
Thank you so much for your video!
Super Explanation. Thanks a lot
Great content. Thank you.
This video is very clear thank you!
thank you man! That was cleanest explonation!
Well explained relationships, thank you for sharing.
Bunch of thanks for nice expalanation❤❤
Great demonstration.
It is really easy to understand, thanks
Very useful for me ,thank you a lot
it's very useful and it save my final exam
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.
Very Useful video for me ,Nice work man
great explanation, thanks
This was awesome, thank you!
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!
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
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
Great Video! Thank you :)
Nice explain❤ Thank you!
Very helpful. Thank you.
Thank you for this explanation
Amazing Video!! Thank you sm
this video was very helpfull thanks man
is there a mode for describing your methods? or do you just have to name them well?
i was flabbergastingly bamboozled by this stupefying explanation
The best video I've ever seen, you saved me😭😭thankyouu
You're the best mr Bear
Great video! Make me quickly know how to draw UML class diagrams.
pure gold!
great explanation!!
Really helpful, thank you
Brilliant Bear - some man - Thoroughly enjoyed your video :D
super Lucid explanation ;)
Great tutorial!
wow dude nice pfp!
Yes thank you so much , thank you this might be what I just need to diagram
very well explained.
thank you for clear explanation. I have a question in mind. What does dashed lines mean.
amazing video thx
this guys name forged his path in life
it was so helpful thank you
Thank you!
Thank You soooooo much
wonderful video
Good tutorial!
dil jeet liya bhai
thank you so much
Amazing video
thankyou so mush it helps me much.
Hey I've seen this one, it's a classic!
great video .
Nice and well prepared
good job man 👍
amazing can't be explained better
Thanks!!
You saved me from 2 hours of reading a boring UML book 😇
awesome bro!
dam,
the explanation was perfect.
I am new to coding and learning how to do class diagrams so I have a question. My instructor recommended trying to do class diagram using Lucid Software my question is the link above for a free version of it? Or is there a link that someone can provide that even if it is not a free version that someone can recommend a plan to go with that is not too expensive? I appreciate any help you can give.
my god, this was awesome
thanks a lot😭😭
the "has-a" relationship does not always imply a one-to-one relationship. The "has-a" relationship can represent various cardinalities.
🤓
Clearest example on how NOT to design a piece of software. TY!
thank u mr.bear
Nice!
Thanks Bear