# Classes and Objects

A review of classes and objects in all five languages: a Snack class with fields, a constructor and methods, objects made from it, and the classic shape of a Java program you'll see in textbooks.

![Cheat sheet: Classes and Objects](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/c2689c62965e45feb1a0aea19245b35b.webp)

- Category: Data Structures
- Level: Apprentice
- Tags: Class (oop), Constructor (oop), c-sharp, java, JavaScript, Object (oop), python, typescript
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/ds-code-you-need-classes-cheat-sheet