# Introduction to Functions

Copying the same lines again and again? That's a function waiting to happen.

![Cheat sheet: Introduction to Functions](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/9b172d4ae5ed4507b7c0a113e02de932.webp)

- Category: Java
- Level: Novice
- Tags: java
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/introduction-to-functions-an-overview-cheat-sheet