I’m confused with designing a client software with database integration to what should be a member variable of the class or just a query to the database. Let me be specific with a trivial example: If I have, lets say, a Student class, which has a list of “friends” that are Student objects. S…
Tag: class-diagram
How to write constructor where the types are from another class in Java?
I’m doing a UML diagram for a Connect four game. It is a two-player connection board game, in which the players choose a color and then take turns dropping colored discs into a seven-column, six-row vertically suspended grid. I have a problem with the UML Diagram. The class game has 2 variables that cam…
How to represent bi-directional associations in UML?
After reading the question “In UML class diagram can composition be bidirectional?”, I’m wondering how concrete examples of bi-directional shared/composite aggregation will look on a UML diagram. Specifically, I’m interested how arrow-heads and multiplicity are used to distinguish betw…
How to present abstract class which has relationship with interface class in class diagram
I have to do diagram with minimum of one abstract class and interface.I though to be a good idea to implement the interface class here. My table is customer which is the abstract class.The interface …
Do we need to add interface Runnable in our UML class diagram? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago. Improve this question I have created a simple FlappyBird clone game with socket programming…
Using Inheritance like this is right?
I’m student learning Inheritance in Java. I’m making a program (Bitcoin Mining Game). In the program, there are different kind of digger (Mining Machine): ordinary digger (this only does digging coin), overclock digger (this can dig and can overclock to dig faster) and durability recover digger (t…
UML modelling enumeration with attributes
I would like to create an UML diagram with Java enumerations (enum), that have one or more attributes, but I am confused about how to do it. For example an enum could be declared like this: Without the attributes, it is easy: But how do you model it with attributes elegantly? Should it be like this? I found o…