chapter 5, 6 and 7: oop finals

Question 1

The meaning of ___________ is to make sure that “sensitive” data is hidden from users.

Answer 1

ENCAPSULATION

Question 2

It enables the use of existing class to define a new class.

Answer 2

Java Enheritance/Enheritance

Question 3

A derived class is defined by adding instance variables and methods to an existing class. It
is also known as ________, __________, and __________.

Answer 3

subclass, child class, and descendant class.

Question 4

The existing class that the derived class is built upon is called the _________. It is also called
superclass, parent class, and ancestor class.

Answer 4

base class

Question 5

The derived class is _______ while the base class is _______.

Answer 5

Student, Person

Question 6

The ________ class inherits the declared instance variables and public methods in the _________ class except its constructor.

Answer 6

Student, Person

Question 7

A derived class has its own _________. It does not inherit any constructors from the base class.

Answer 7

Constructors

Question 8

An __________ is an event that occurs during the execution of a program that disrupts the normal flow of instructions.

Answer 8

Exception

Question 9

It is the process used to change the normal flow of code execution if a specified exception occurs.

Answer 9

Exception handling

Question 10

Exceptions that occur during compilation are called _______________.

Answer 10

Checked exceptions

Question 11

________________ are exceptions that occur during execution. These are also known as ___________.

Answer 11

Unchecked exceptions, runtime exceptions.

Question 12

A ____________ is a block of code that might throw an exception that can be handled by a matching catch block.

Answer 12

Try block

Question 13

A ____________ is a segment of code that can handle an exception that might be thrown by the try block that precedes it

Answer 13

Catch block

Question 14

Only _______ try block is accepted in a program but there can be multiple catch blocks.

Answer 14

One (1)

Question 15

The _________ contains statements which are executed whether or not an exception is thrown.

Answer 15

Finally block

Question 16

OOP stands for

Answer 16

Object-Oriented Programming

Question 17

Java code DRY stands for?

Answer 17

“Don’t Repeat Yourself”

Question 18

It is a collection of statements that are grouped together to perform an operation.

Answer 18

Method

Question 19

Keywords that can be used to control the visibility of fields, methods, and constructors in a class. The four access modifiers in Java are public, protected, default, and private.

Answer 19

Access Modifier

Question 20

Four Types of Access Modifiers

Answer 20

Private, Default, Protected, Public

Question 21

Can access the _______ modifier only within the same class and not from outside the class.

Answer 21

Private

Question 22

Can access the default modifier only within the same package and not from outside the package. And, if they do not specify any access modifier it will automatically consider it as __________.

Answer 22

Default

Question 23

Can access the protected modifier within the same package and also from outside the package with the help of the child class. If they do not make the child class, they cannot access it from outside the package. So, inheritance is a must for accessing it from outside the package.

Answer 23

Protected

Question 24

Can access the public modifier from anywhere. Can access _______ modifiers from within the class as well as from outside the class and also within the package and outside the package.

Answer 24

Public

Question 25

_____________ causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type (returns nothing).

Answer 25

Return Statement

Question 26

Same rule of naming a variable.

Answer 26

Method Name

Question 27

A ___________ is like an object constructor, or a “blueprint” for creating objects.

Answer 27

Class

Question 28

Classes and objects are the two main aspects of object-oriented programming.

Answer 28

Class and Objects

Question 29

A __________ is a special method that is used to create and initialize an object.

Answer 29

Constructors