abstraction

🧊 Abstraction in Java vs Go

Abstraction hides unnecessary details and exposes only what’s relevant. Think of it as defining what something should do, but not how.

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🧠 Concept Comparison

Feature	Java	Go
Abstract type	abstract class or interface	interface
Implementation required	Yes, via subclass	Yes, via struct method receivers
Partial implementation	✅ (abstract + concrete methods)	❌ (Go interfaces can't have impl)
Multiple inheritance?	✅ via interfaces	✅ via interfaces

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🔍 Key Insight

• Java uses abstract classes for shared logic + required methods.
• Go uses interfaces only pure abstraction.
• Go prefers composition over inheritance, so interfaces are more central.

📂 See:

• AbstractionExample.java
• abstraction.go