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⚖️ Java Interfaces — Legal Contract & Law System! 📜⚖️

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Overview

⚖️ Java Interfaces — Legal Contract & Law System! 📜⚖️ — Quick Facts

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[🏠 INDEX](./00_INDEX.md): ➡️ Next: Inner Classes

Topic 1

⚖️ Real-World Analogy: Legal Contract & Law System 📜⚖️

📚 Interface ek legal contract hai — "ye capabilities honi chahiye" define karta hai,…

Topic 2

📌 1. Interface Basics — Contract Sign 📜

💡 `mermaid graph TD A["📜 Flyable<br>fly()<br>getMaxAltitude()"] --> B["🦆 Duck<br>fly()…

Topic 3

📌 2. Interface Constants & Rules ⚖️

🎯 `java interface AppConstants { // Interface fields automatically: public static final…

Topic 4

📌 3. Default Methods (Java 8+) — Standard Clause 📋

⭐ `java interface Collection2 { int size(); // Default method — backward compatible:…

Topic 5

📌 4. Static & Private Methods — Utility Laws 🔧

🔑 `java interface StringUtils { // Static method — interface se directly call: static…

Topic 6

📌 5. Interface Inheritance — Contract Chain 🔗

✨ `java // Interface extends interface(s): interface Readable { String read(); } interface…

Topic 7

📌 6. Functional Interface & Lambda — Single Obligation 🎯

🌟 `java // 🎯 Functional interface — sirf 1 abstract method: @FunctionalInterface interface…

Topic 8

📌 7. Built-in Functional Interfaces 📦

🚀 `java import java.util.function.*; public class BuiltInFunctional { public static void…

Topic 9

📌 8. Strategy Pattern — Swappable Contracts 🔄

📚 `java // Strategy interface: interface SortStrategy { void sort(int[] array); String…

Topic 10

❌ Common Mistakes (Galti Chart)

💡 | # | Galat ❌ | Sahi ✅ | Kyun? | |---|---------|--------|-------| | 1 | Interface me…

Topic 11

🧪 Exercises

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Drawable interface: draw(),…

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Measurable interface: area(),…

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Circle, Rectangle implementing both

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Polymorphic array iteration

Topic 12

✅ Summary Table

⭐ | Topic | Key Point | |-------|-----------| | Interface | Pure contract, implements…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

⚖️ Java Interfaces — Legal Contract & Law System! 📜⚖️ ka sabse sahi definition kya hai?

Complete! 🎉

⚖️ Java Interfaces — Legal Contract & Law System! 📜⚖️ Complete!

Aliens School · HIEN · Cinematic Knowledge

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