Generic

• Generic can be said to be responsible for safety in Java

• It is used in methods or collection classes that handle objects of various types, and it is a feature that performs type checking during the compilation process

• Since the object's type is checked at compile time, it increases the type safety of objects and reduces the hassle of type casting

  • Naturally, the code also becomes more concise

• ex)

  • Generic is what allows only specific objects to be added to a Collection, or only objects with characteristics of a specific class to be added

    • The advantage of this is that there is no need to implement separate logic inside the collection to verify whether the incoming value is the value you want

  • It enables clearer communication of intent in API design