AlgoDaily - Association, Aggregation, Composition and Casting in OOP

Mark As Completed Discussion

Home > Object Oriented Programming > Object Oriented Programming > Association, Aggregation, Composition and Casting in OOP

Composition

If an object only contains one other object such that their lives are bound together, then we can show this relationship with the composition arrow in UML.

For example, a Car will always have 4 Doors and 4 Wheels. Compositions are shown with a filled-in diamond shape.

Programming Categories

Basic Arrays Interview Questions

Binary Search Trees Interview Questions

Dynamic Programming Interview Questions

Easy Strings Interview Questions

Frontend Interview Questions

Graphs Interview Questions

Hard Arrays Interview Questions

Hard Strings Interview Questions

Hash Maps Interview Questions

Linked Lists Interview Questions

Medium Arrays Interview Questions

Queues Interview Questions

Recursion Interview Questions

Sorting Interview Questions

Stacks Interview Questions

Systems Design Interview Questions

Trees Interview Questions

Popular Lessons

All Courses, Lessons, and Challenges

Data Structures Cheat Sheet

Free Coding Videos

Bit Manipulation Interview Questions

Javascript Interview Questions

Python Interview Questions

Java Interview Questions

SQL Interview Questions

QA and Testing Interview Questions

Data Engineering Interview Questions

Data Science Interview Questions

Blockchain Interview Questions

The Triangle Method for Eye Contact

Introduction to Microservices

Examining the Uber Architecture

Deploying Your Trading Application

Introduction to Amazon Redshift