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Every Computer Science interview is different and the scope of a job is different too. Answer: A file is a named location which stores data or information permanently. A file is always stored inside a storage device using file name e. Answer: A class is a blueprint from which objects are created. A class contains methods and variables associated with an instance of a class. Answer: An object is an instance of a class. Answer: A constructor is methods which are used to create an Object of class.
Answer: Inheritance is property in which the property of a parent class Superclass is passed on to child class Subclass. Answer: Polymorphism is the ability of an object to take on multiple forms. Most commonly polymorphism is used in OOP when a parent class reference is used to refer to a child class object.
Answer: Instance variable belongs to a particular instance of that class whereas Class variable. A class variable is also known as static variables. This is an instance variable public static int a1;…….. This is a static or class variable …………………….. Answer: Constructor: Used to initialize the instance of a class.
Method: Used to perform some function or operation. Answer: Singleton class limits the number of objects created for a class to one but gives the flexibility of creating more objects if the situation changes. Answer: An object is first declared then instantiated and at last declared. No modifier needed. Answer: The operator with the highest preference is Postfix operators i.
Answer: The array is a container which holds the fixed number of similar data types. Answer: To access the primitive data type as an object we use wrapper class. They are following Answer: Overloading is when two or more methods in the same class have the same method name but different parameters i. Overriding is when two methods having the same method name and parameters i.
Answer: Java supports multiple inheritances i. A class can implement multiple Interfaces but cannot extends multiple classes. Answer: A stream can be defined as the sequence of data.
There is two type of streams. InputStream: Used to read data from a source. OutPut Stream: Used to write data into a destination.
Answer: Java Character stream is basically used to perform input and output for 16 bit Unicode. Answer: Java Byte stream is basically used to perform input and output for 8 bit Unicode. Answer: The interface is a reference type in Java, similar to the class but its collection of abstract methods. A class can implement multiple interfaces. Answer: A class that contains the abstract keyword in a declaration is called abstract class. The properties of the abstract class are as follows This has been a comprehensive guide to the Computer Science Interview Questions and answers so that the candidate can crackdown these Computer Science Interview Questions easily.
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The best thing about computer science job interviews is that technical questions can still be guessed. To help you prepare for the interview well, here are 25 of the most common and important interview questions that every computer science student must know. These questions are mostly asked during job interviews with developers, technical support, admins servers, tutors, database managers and testers, and others. A computer system is a combination of CPU, memory and related electronics, all peripheral devices connected to it and their operating systems. The basic components of a computer system are the Central Processing Unit arithmetic logic unit and control unit , Memory primary memory and secondary memory and Input and Output devices. A microprocessor is an integrated circuit that contains all the functions of a central computer processing unit. The amount of memory larger than 4 GB can be easily handled by a bit processor.
Every job interview is different and the scope of a job is different too. Computer Science questions and answers with explanation for interview, competitive examination and entrance test. If you are going for any computer science or IT job interview then you should know enough about that field along with the basics of computer science. You can increase your knowledge by learning these computer questions which help to you while solving computer questions in ssc and bank exams. Computer Science Engineering Questions with Answers Technical interview is an important part of recruitment process.
An object is a package that contains related data and instructions. The data relates to what the object represents, while the instructions define how this object relates to other objects and itself. What is a message? A message is a signal from one object to another requesting that a computation take place. It is roughly equivalent to a function call in other languages. What is a class? A class defines the characteristics of a certain type of object.
Describe the most significant written document, report or presentation which you had to complete. Describe a work situation in which you had to take a risk. What.
Every Computer Science interview is different and the scope of a job is different too. Answer: A file is a named location which stores data or information permanently. A file is always stored inside a storage device using file name e. Answer: A class is a blueprint from which objects are created.
Here are computer science interview questions for fresher as well as experienced candidates to get your dream job. A microprocessor is an integrated circuit having all the functionality of a central processing unit of a PC. A super class is the basis of all the classes. The object of the rest of the class has all the characteristics related to the superclass. The stages involve by SDLC are: 1 planning, 2 design, 4 construction, 5 testing, and 6 deployment.
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