Passport Status Tracking System - Class Diagram
Class Diagram
- A class diagram is an illustration of the relationships and source code dependencies among classes in the Unified Modeling Language (UML).
- In this context, a class defines the methods and variables in an object, which is a specific entity in a program or the unit of code representing that entity.
- Class diagrams are useful in all forms of object-oriented programming (OOP).
- The concept is several years old but has been refined as OOP modeling paradigms have evolved.
- In a class diagram, the classes are arranged in groups that share common characteristics.
- A class diagram resembles a flowchart in which classes are portrayed as boxes, each box having three rectangles inside.
- The top rectangle contains the name of the class; the middle rectangle contains the attributes of the class; the lower rectangle contains the methods, also called operations, of the class.
- Lines, which may have arrows at one or both ends, connect the boxes.
- These lines define the relationships, also called associations, between the classes.
Class diagram
Benefits of class diagrams
- You know exactly what you are getting.You will have lower development costs
- Your software will behave as you expect it to Fewer surprises
- The right decisions are made before you are given poorly written code. Less overall costs
- We can develop more memory and processor efficient systems
- System maintenance costs will be lower. Less relearning takes place
- Working with a new developer will be easier.Communication with programmers and outside contractors will be more efficient