What Are Interfaces in Java? In Java, an interface is an abstract type that contains a collection of methods and constant variables . It is one of the core concepts in Java and is used to achieve abstraction, polymorphism and multiple inheritances.
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Abstract class and interface both are used to achieve abstraction where we can declare the abstract methods. Abstract class and interface both can’t be instantiated. … Difference between abstract class and interface. Abstract classInterface3) Abstract class can have final, non-final, static and non-static variables.Interface has only static and final variables.Difference between Abstract class and Interface – Javatpoint www.javatpoint.com › difference-between-abstract-class-and-interface
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