Interview Questions and Answers for 'Infostretch' | Search Interview Question

Interview Questions and Answers for 'Infostretch' - 3 question(s) found - Order By Newest

Q1. Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs

Core Java

Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features

1. Inheritance for Code Reuse
2. Abstraction for modularity, maintenance and agility
3. Encapsulation for security and protection
4. Polymorphism for flexibility and interfacing

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve oops oops features Asked in 260 Companies basic frequent}

Related Questions

Can you give a real world example of Encapsulation and Abstraction ?

Which of the following Java feature promotes access protection or Hiding ?

a. Inheritance
b. Encapsulation
c. Abstraction
d. Composition

Define encapsulation in Java ?

Give an example of how Object Oriented Programming Concepts can be implemented.

Which of the OOP's features facilitate dependency injection ?

Which of the OOP's feature - encapsulation or abstraction - is more important ?

Which of the polymorphism type - static or runtime - is more important ?

Which of the OOP's feature is most important ?

Frequently asked in Infosys India

Q2. What is a String Pool ?

Core Java

Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java oops string string class string pool heap memory Asked in 31 Companies intermediate frequent}

Try 2 Question(s) Test

Related Questions

What are different ways to create String Object? Explain.

Why Char array is preferred over String for storing password?

How does making string as immutable helps with securing information ? How does String Pool pose a security threat ?

Which memory segment holds String Pool in Java ?

How and Why Strings are interned in Java ?

What will be the output of following code

Integer x = 1;
Integer y = 2;
System.out.println(x == y);

What if you change 1 to "1" and Integer to String?

What will be result of following code and why

Integer int1 = 1;
Integer int2 = 1;
String str1 = new String("str");
String str2 = new String("str");
String str3 = "str";
String str4 = "str";

System.out.println(int1 == int2);
System.out.println(str1 == str2);
System.out.println(str3 == str4);

What is the purpose of String Pool ? Don't you think it's a performance overhead to have unnecessary check for string in string pool ?

Why string pool concept has been introduced in string ?

Q3. Can you give a real world example of Encapsulation and Abstraction ?

Core Java

Ans. Car Engine is an example of encapsulation and abstraction. You ignite the car using an interface called starter and least bothered about how the tire actually moves (This is abstraction). The engine encapsulates the complete process to itself only and doesn't allow you to start the other components like the radiator etc ( this is excapsulation )

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve encapsulation object oriented programming (oops) oops concepts abstraction oops oops features java features Asked in 13 Companies}

Related Questions

Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs

Which of the following Java feature promotes access protection or Hiding ?

a. Inheritance
b. Encapsulation
c. Abstraction
d. Composition

Define encapsulation in Java ?

Give an example of how Object Oriented Programming Concepts can be implemented.

Which of the OOP's features facilitate dependency injection ?

Which of the OOP's feature - encapsulation or abstraction - is more important ?

Which of the polymorphism type - static or runtime - is more important ?

Which of the OOP's feature is most important ?

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.