What is the difference between polymorphism and generics?

Using Java Generic concept, we might write a generic method for sorting an array of objects, then invoke the generic method with Integer arrays, Double arrays, String arrays and so on, to sort the array elements. Polymorphism is the ability of an object to take on many forms.

What are generics in collection?

The generic collections disable the type-casting and there is no use of type-casting when it is used in generics. The generic collections are type-safe and checked at compile-time. These generic collections allow the datatypes to pass as parameters to classes.

What is generic means in Java?

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.

What is meant by the term generics?

Explanation: The term generics means parameterized types. Parameterized types are important because they enable us to create classes, structures, interfaces, methods, and delegates in which, the type of data upon which they operate is specified as a parameter.

Is generic a polymorphism?

Using parametric polymorphism, a function or a data type can be written generically so that it can handle values identically without depending on their type. Such functions and data types are called generic functions and generic datatypes respectively and form the basis of generic programming.

What is coercion polymorphism?

The Coercion polymorphism is called as casting. This type of polymorphism occurs when an object or the primitive is cast into some other type. There are two type of casting. The implicit casting is done using compiler itself, and explicit cast is done using const_cast, dynamic_cast etc.

Why do we need generics in collection?

In a nutshell, generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods. By using generics, programmers can implement generic algorithms that work on collections of different types, can be customized, and are type safe and easier to read.