Do you know what’s generics in Java?

To construct an instance of a generic type

Generics means parameterized types . The idea is to allow type (Integer, String, … etc., and user-defined types) to be a parameter to methods, classes, and interfaces. Using Generics, it is possible to create classes that work with different data types.

Java Generics is a set of related methods or a set of similar types . Generics allow types Integer, String, or even user-defined types to be passed as a parameter to classes, methods, or interfaces. Generics are mostly used by classes like HashSet or HashMap.