Explain Abstract Class, Abstract method, and Interface in Java? Write any program that gives example of abstract and interface

Q: How to use method overriding in Inheritance for subclasses?wite code in java.

A: a programme to show how to override a method using subclasses with various numbers and types of…

Q: Abstract methods (also known as pure virtual methods in C++ or delayed features in Eiffel) are…

A: Hear is the answer :

Q: Distinguish between constructor and method abstract class and interface

A: Below is the diff between class & interface. I hope this will help.

Q: Can a class in Java be inherited from more than one class?

A: Inheritance is a feature of object oriented programming which allows reuse of parent class…

Q: What are difference between constructor and method o in java? Ans: ?

A: A method can be defined as a block of code enclosed in braces {} and executes only upon invocation.…

Q: Create a simple java program that shows method overloading and constructors.

A: code : - class Demo {       // first constructor without argument     Demo()    {…

Q: Explain the difference between the "has-a" and "part-of" relationship of two objects in java by…

A: To explain the difference between the "has-a" and "part-of" relationship.

Q: What is static variable and static method? Explain why main method in java is always static.

A: The static variable is a class level variable common to all the class objects i.e. there is only one…

Q: How many constructors are there in Java?

A: Types of constructor in java.

Q: An abstract class can extend another abstract class and implement multiple interfaces.

A: Because Classes can only extend from one other class, but can implement multiple interfaces.

Q: What is annonmyous inner class in Java. Explain with a proper example code.

A: Anonymous inner class:- It's an inner class that doesn't have a name and only creates one object.…

Q: How to overload constructors or methods in Python?

A: Solution: The @classmethod decorator allows overload constructors.    Python Code: overload…

Q: Both abstract classes and interfaces may be used to specify common object behavior, and they are…

A: here are some factor for using abstract classes. Use abstract class if you have a default…

Q: What is type casting in java? Give example

A: Question. What is type casting in java? Give example Answer. Type casting: When we assign a value of…

Q: Use object-oriented features of Java for a Quiz program. Include  class variables, instance…

A: QuestionDialog.java import java.awt.event.*;import javax.swing.*;public class QuestionDialog extends…

Q: Describe the differences between instance variables and regular methods and static fields and…

A: The distinction between static and instance methods is as follows:

Q: What’s the difference between an Abstract Class and Interface in Java?

A: Abstract class Basically abstract classes are special classes defined with the keyword abstract. A…

Q: Can we make the abstract methods static in Java?

A: Answer: No, we can not make the abstract methods static in java.  When we declare a method in a…

Q: Explain the advantages of interfaces versus abstract classes.

A: Introduction: Computer programming is the process of creating a set of instructions that tells a…

Q: Why method overloading is called compile-time polymorphism/static binding in java? explain with java…

A: According to the question Polymorphism in Java is the capacity of an object to take many paperwork.…

Q: In Java, how can we go to a class from another class?

A: Given: In Java, how can we go to a class from another class?

Q: 15) Distinguish between constructor and method abstract class and interface

A: Constructor is a specialized method which is called automatically when the class is instantiated and…

Q: What is a constructor in a Java class?

A: Given: What is a constructor in a Java class?

Q: Explain What is equals() method in Java.

A: Answer : equals() method in java : The Java String class equals () method compares two  strings…

Q: In Java, how can you tell the difference between an Abstract Class and an Interface?

A: I give the theory, code, and output screenshot

Q: Question 3: What are abstract methods?

A: The methods that are declared without implementation are called abstract methods. Rules of abstract…

Q: Design a python program that implements abstract classes.

A: Program: The main objective of the programming is to establish the interaction with the computer…

Q: Define Interface testing in brief.

A: To be determine: Define interface testing

Q: What is scope, Method Scope and Block scope  in java explain each with the help of java program

A: Scope is simply said as lifetime of a variable where particular variable is accessible Based on…

Q: Describe how instance variables of reference type are handled differently from variables of…

A: According to the information given:- We have to describe the instance variables of reference type…

Q: Is it possible to overload static method?

A: Static Methods: static methods themselves are saved in the Permanent Generation area of the heap but…

Q: What is a constructor in java? What is the use of constructor and super keywords?

A: A constructor in Java is a special method which is used to initialize objects. The constructor is…

Q: Describe how you would develop object-oriented features of Java for a Quiz program using each of the…

A: An Operating System is an interface between a computer user and computer hardware. An operating…

Q: Java Abstract classes can be defined without any abstract methods" - Support this statement with…

A: An abstract class which have abstract and non abstract methods. abstract class Bike { void run(){…

Q: Write the difference between interface and abstract class.

A: Basic  Interface Class Abstract Class  implementations  Method interface can't have implementation…

Q: OEvery class in Java implements zero or more interfaces.

A: A class implements multiple interfaces. And this is known as multiple inheritance.

Q: Describe differences between inheritance and polymorphism in java.

A: Differences: In the inheritance, the newly created class can use to properties of the old class. In…

Q: ifference between java method and java

A: A Method is a collection of statements which returns a value upon its execution. A Constructor can…

Q: Define abstract classes and abstract methods with examples.

A: Abstract classes and abstract methods explained briefly in the below sections  using Java…

Q: An interface in Java is created by using the following keyword a. abstract O b. extends O c.…

A: 1) In java we use keyword interface to declare an interface 2) Interface is used to provide total…

Q: What is dynamic method dispatch or runtime polymorphism?

A: Introduction What is dynamic method dispatch or runtime polymorphism?

Q: Explain how abstract classes and methods work

A: An abstract class is a class which may contain abstract methods or normal methods.

Q: Do we have pointers in Java?

A: Introduction: That's because Java's pointers are pretty similar to Java's object references.  If…

Q: Build this interface with Java and give me the code Model leleare to Model

A: I am giving you the complete code to build similar login form.  I am using eclipse ide to create…

Q: Explain the differences between Abstract Classes and Interfaces in Java.

A: Explain the differences between Abstract Classes and Interfaces in Java.