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Fix several frontmatter issues

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Ilkka Seppälä
2019-11-16 21:56:40 +02:00
parent 63c707fcb1
commit 19b129c28e
10 changed files with 10 additions and 14 deletions
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subclass-sandbox/README.md
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---
layout: pattern
title: Subclass Sandbox
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- Java
- Difficulty-Beginner
---
## Intent
The subclass sandbox pattern describes a basic idea, while not having a lot of detailed mechanics. You will need the pattern when you have several similar subclasses. If you have to make a tiny change, then change the base class, while all subclasses shouldn't have to be touched. So the base class has to be able to provide all of the operations a derived class needs to perform.