LATEST REVATURE INTERVIEW TEST 2024-
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ANSWERS
Object-oriented programming (OOP) - CORRECT ANSWER a programming language
model organized around objects that have data and methods that form the object. It's
an instance of a class. four main concepts:
1. Encapsulation
2. Abstraction
3. Inheritance
4. Polymorphism.
Variables - CORRECT ANSWER A structure for temporarily storing data in your
computers memory
1. primitive variables - data types like integers, decimals, and alphanumeric characters
2. reference variables- store memory addresses where objects are located. use a class
(name) as their type and can only point to objects that are instances of the class that is
their type
Arrays - CORRECT ANSWER A collection of primitive values or object reference
organized with an index.
A specific amount of memory is reserved for an array based on the size and data type
Instance variable - CORRECT ANSWER declared in the class scope
,LATEST REVATURE INTERVIEW TEST 2024-
2025 QUESTIONS WITH 100% CORRECT
ANSWERS
{ } denote a change in scope
What is DBMS? - CORRECT ANSWER Database Management System
What is RDBMS? - CORRECT ANSWER Rational Database Management System -
stores data into tables with columns and rows
Ex. SQL Server
class - CORRECT ANSWER a blueprint or prototype from which objects are created.
a representation of a type of object. Example: class called Vehicle describes the
minimum things that a vehicle is.
Inheritance - CORRECT ANSWER Inheritance allows a class to use the properties
and methods of another class. Allows parent/child relationship. Example: car and truck
inherit functions of vehicle but car is not truck or vice versa. A class inherits fields and
methods from all its superclasses, whether direct or indirect. A subclass can override
methods that it inherits, or it can hide fields or methods that it inherits.
Interface - CORRECT ANSWER a description of the actions that an object can do.
an Interface is a description of all functions that an object must have in order to be an
"X". http://images.slideplayer.com/14/4328130/slides/slide_3.jpg
, LATEST REVATURE INTERVIEW TEST 2024-
2025 QUESTIONS WITH 100% CORRECT
ANSWERS
Why use an interface? - CORRECT ANSWER main use is polymorphism, or the
ability to perform the same operation on a number of different objects.
Package - CORRECT ANSWER a namespace that organizes a set of related classes
and interfaces. Used to keep things organized by placing related classes and interfaces
into packages. Used in Java in order to prevent naming conflicts.
How to create and use objects - CORRECT ANSWER You can declare, instantiate
using new keyword, or initialize by using new and calling constructor
You can call object fields using the dot method and calling its functions
Encapsulation - CORRECT ANSWER the principle of information hiding and
wrapping code together into a single unit. data is not accessed directly
API - CORRECT ANSWER Application Programming Interface - Contains the
complete listing for all packages, interfaces, classes, fields, and methods supplied by the
Java SE platform
Association - CORRECT ANSWER a relationship between two classes. there is no
owner between objects. For example, a teacher *has-a* or *teaches* a student. There
is no ownership between the teacher and the student
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