So, if I receive that answer, I usually ask them to create a class and explain how objects are created in the program, let's say to represent anEmployee,Student,or simply aCar. If a programmer truly understandswhat is a classandwhat is an object, it will do that in no time, but ...
Answers to Questions and Exercises: ObjectsQuestions Question: What's wrong with the following program? public class SomethingIsWrong { public static void main(String[] args) { Rectangle myRect; myRect.width = 40; myRect.height = 50; System.out.println("myRect's area is " + myRect.area...
In this section, we’ll look at the top 30 interview questions on various Java OOPS concepts. Java is an Object-Oriented Programming language as it uses Objects that acquire certain properties with the help of functions and methods. Note that hiring managers askinterview questions on Java OOPSco...
A class is a blue print from which individual objects are created. A class can contain fields and methods to describe the behavior of an object.Read also: Java - Classes and Objects 12. What kind of variables a class can consist of?A class consist of Local variable, instance variables ...
Suggested Read =>>Top OOPs Interview Questions Q #10) What is Inheritance? Answer:Inheritance means one class can extend to another class. So that the codes can be reused from one class to another class. The existing class is known as the Super class whereas the derived class is known...
Here are some Java interview questions and answers for 5 years of experienced individuals: 1. What is the difference between the == operator and the equals() method in Java? In Java, the equals() and “==” operators can both be utilised to contrast objects and determine whether they ar...
Instance variables are those variables that are accessible by all the methods in the class. They are declared outside the methods and inside the class. These variables describe the properties of an object and remain bound to it at any cost. All the objects of the class will have their copy...
Classes and Objects: Classes are used to specify the structure of the data. They define the data type. You can create any number of objects from a class. Objects are the instances of classes. Encapsulation: Encapsulation is a mechanism which binds the data and associated operations together and...
Which class does not override the equals() and hashCode() methods, inheriting them directly from class Object? java.lang.String java.lang.Double java.lang.StringBuffer java.lang.Character 3. Which collection class allows you to grow or shrink its size and provides indexed access to its ...