It is the next development stage of the object-oriented life cycle model where the analysts design the desired system's overall architecture. The system is divided into a set of interacting subsystems. The analyst considers the specifications from the system analysis. It all about evaluating what the end-users expect from the new system. As per the object-oriented design, the system is considered a collection of objects, with each object handling a specific state data.
For example, in banking software, each account may feature some exclusive objects with separate data and functions. The philosophy behind an object-oriented design is to create a set of interacting objects as seen in the real world. Instead of process-based structural programming, developers create objects through data structures.
Each programming language comes with several data types, with each type comprising various variables. Similarly, objects also feature certain predefined data types. A class refers to a collection of similar objects.
It is created as a blueprint to define variables and methods that share certain similarities with objects. As stated above, an object-oriented design bears resemblances with the real world. Let's say you have purchased a smartphone. Now, your smartphone is just one of the several 'smartphones' available in the world. We can consider 'smartphones' as a class of objects, and your smartphone object is an instance of a class of objects. Smartphones feature many states operating System, RAM, and motherboard and behavior play music, call, messaging in common.
However, the state of each smartphone is independent and can be different from other smartphones. While manufacturing smartphones, manufacturers can use the exact blueprint to build many smartphones as they share common characteristics. This allows manufacturers to create new blueprints more efficiently.
Likewise, in object-oriented programming, developers can use many similar objects to create blueprints. This is called a class. Save Article. Like Article. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. Most popular in Software Engineering. Operating System. Computer Network. Compiler Design.
Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Web Technology. Cyber Security. C Programming. Control System. Data Mining. Data Warehouse. Javatpoint Services JavaTpoint offers too many high quality services. The different terms related to object design are: Objects: All entities involved in the solution design are known as objects. For example, person, banks, company, and users are considered as objects.
Every entity has some attributes associated with it and has some methods to perform on the attributes. Classes: A class is a generalized description of an object. An object is an instance of a class. A class defines all the attributes, which an object can have and methods, which represents the functionality of the object.
Messages: Objects communicate by message passing.
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