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About to Always Use Interfaces

How to follow the principle of Couple To Abstractions, Not Concretions, and how to avoid tempting others to break the rule. You've probably seen it: IOrderService, IEmailService, IPaymentService and every class has exactly one implementation. Video Content: ---------------------------------- 0:00 - Intro 1:12 - Pseudocode Problem 2:39 - Inheritance Solution 4:21 - java public class Main { public static void main(String[] args) { // our courses: Mastering Agentic AI with Java : Coupon: TELUSKO10 (10% Discount) ... 1. Full .NET Interview Course C# / ASP.NET Core / MVC / API - Top 500 Interview Questions ...

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Always Use Interfaces
VIDEO

Always Use Interfaces

59,141 views Live Report

How to follow the principle of Couple To Abstractions, Not Concretions, and how to avoid tempting others to break the rule.

Interfaces: WHAT - Implementations: HOW
VIDEO

Interfaces: WHAT - Implementations: HOW

2,154 views Live Report

Interfaces

You Don’t Need an Interface for Everything
VIDEO

You Don’t Need an Interface for Everything

18,120 views Live Report

You've probably seen it: IOrderService, IEmailService, IPaymentService and every class has exactly one implementation.

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Last Updated: May 24, 2026

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