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Java Academy · Lesson

Interfaces in Practice

Use interfaces as types, pass them to methods, and swap implementations easily. Practice small patterns for flexible code.

Overview

Interfaces in practice: treat capabilities as types and keep callers independent from concrete classes. You can pass an interface to a method, store it in a list, and replace it with a different implementation when needed.

Interface as parameter

Methodlar interface türünü parametre olarak alırsa esneklik kazanır:

  • Çağıran kod sabit kalır.
  • Farklı sınıflar aynı sözleşmeyi uygulayıp kullanılabilir.
  • Testte Fake veya Stub takıp hızla deneyebilirsin.

All lessons in this course

  1. Interfaces in Practice
  2. Generics Basics (T, inference)
  3. Generic Methods/Classes
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