What is a Singleton pattern? The Singleton pattern is a design pattern that ensures a class has only one instance and provides a global point of access to that instance.…
A generic interface is an interface that declares one or more type parameters, allowing the interface to work with different types. The syntax for declaring a generic interface is similar…
Prerequisites: Functional Interfaces: Introduction to Java lambdas Lambda expressions in Java are used to provide a concise way to implement functional interfaces, which are interfaces with a single abstract method.…
It’s an interface with just only one abstract method. it can have any number of default or static methods . lambdas can only operate on functional interface. it is also…
In interface method is by default public abstract . when abstract class implements interface a method which are defined in interface we don’t need to implement. This is because a…
Default Method default method is used to provide common functionality to class. it can be override by implemented class. Static Method static method belongs to Interface, can’t override by class.…
A nested class doesn't have any name is Known as anonymous inner class. anonymous inner class can be used in two ways 1. for overriding purpose If the purpose of…
