---
title: "Discussion on \"Techniques to Master Low-Level Design in OOP: Understanding Association, Aggregation, Composition, and Dependency with UML and Java Examples for Interview\" | Hashnode"
description: "Discussion on \"Techniques to Master Low-Level Design in OOP: Understanding Association, Aggregation, Composition, and Dependency with UML and Java Examples for Interview\". High-level design gives your system structure, but low-level design (LLD) gives it life. It’s the stage where abstract architecture becomes tangible—where objects, relationships, and behaviors are shaped with precision. This is the part interview..."
url: "https://hashnode.com/posts/techniques-to-master-low-level-design-in-oop-understanding-association-aggregation-composition-and-dependency-with-uml-and-java-examples-for-interview/697095a6f5391029d6ff3d21"
---

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# [Techniques to Master Low-Level Design in OOP: Understanding Association, Aggregation, Composition, and Dependency with UML and Java Examples for Interview](https://tuanhnet.hashnode.dev/techniques-to-master-low-level-design-in-oop-understanding-association-aggregation-composition-and-dependency-with-uml-and-java-examples-for-interview?utm_source=hashnode&utm_medium=feed)

High-level design gives your system structure, but low-level design (LLD) gives it life. It’s the stage where abstract architecture becomes tangible—where objects, relationships, and behaviors are shaped with precision. This is the part interview...

Jan 21 · 6 min read · tuanhnet.hashnode.dev  
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