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abstract class and Interface interview questions and answers in java Lets see most asked interview questions and answers about interface and abstract class in java.  1. What is Interface in Java? Ans :- Interface is completely Abstract Class. From java 8, we can use default method in interface. Interface is just declarations of methods. Interface does not provide implementation of methods. We can implement interface and whoever class implements that interface it must provide implementation of that interface. Any class implements as many interface they want. Interface also can extends another interface. but one interface can not implements another interface. Learn more about Interface with Examples :- Interface In Java 2. What is Abstract class in Java? Ans :-  Any class defined with abstract keyword is called abstract class. Abstract class contains abstract method as well as non abstract methods also. Abstract class can not instantiated means we can not create object of abstract class

In this article we cover why python is popular. so many people talking about python when it comes to programming language? Why Python programming is so popular? There are plenty of reasons why python is popular but we cover only main top reasons. You can see StackOverflow survey for 2019. StackOverflow 2019 developer survey You can see StackOverflow survey for 2020. StackOverflow 2020 developer survey You can full insight which programming language is most lovable, used or dead. You can also see which framework is most lovable, used or dead by developers survey. So now lets go for Why Python is become popular nowadays? 1.Python language is simple and easy for beginners. You know also python is so simple and easy when it comes to other languages. So many beginner programmers choose python for development. And also its syntax is so easy then other programming language. like in java if you want to simple run "Hello World" example you have to define class define main method and t