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CCS0070 M5 - M6

QuestionAnswer
An object is an instance of a: class
Which concept of Java is a way of converting real world objects in terms of class? A) Inheritance B) Encapsulation C) Polymorphism D) Abstraction Abstraction
A _____ is a procedure associated with a class that describes an action an object is able to perform. A) Field B) Constructor C) Method Method
Which one of these is a data type? bit byte gold fold byte
[T / F]Global Variables are variables used in a method False
These variables identify the data stored in the object. A) Methods B) Parameters C) Instance variables D) Local variables Instance variables / Attributes
[T / F] Access (Getter) – a method that is used to access or retrieve data. True
[T / F] this - It represents an instance of the class in which it appears True
[T / F] This – contains a reference to the current object being constructed False
Which among the following violates the principle of encapsulation almost always? Global variables Public variables Local variables Array variables Global variables
[T / F] There is an Increased security of data with Encapsulation True
[T / F] Encapsulation is implemented by using private True
It is a way of combining various data members and member functions that operate on those data members into a single unit A) Abstraction B) Inheritance C) Polymorphism D) Encapsulation Encapsulation
How can Encapsulation be achieved? Using inheritance Using Access Specifiers Using only private members Using Abstraction Using Access Specifiers
[T / F] The private members of the base class are visible in derived class but are not accessible directly. True
[T / F] The private member's are made public to all the classes in inheritance. False
How many classes can be inherited by a single class in java? Only 1 2 - 3 As many Only 1
[T / F] In hierarchical inheritance, all the classes involve some kind of inheritance. True
As a blueprint is a design for a house, a class is a design for a: class object attribute object
What is it called where child object gets killed if parent object is killed? A) Inheritance B) Aggregation C) Composition D) Polymorphism Composition
A _____ is a procedure associated with a class that describes an action an object is able to perform. A) Field B) Constructor C) Method D) Interface method
What is the difference between a class and an object? An object is a blueprint to make a class A class is a blueprint to make an object Blueprint class is an object make a A blueprint is an object to make a clas A class is a blueprint to make an object
[T / F] Accessor (Getter) – a method that is used to change the data. False
[T / F] final Method: a method that cannot be overridden True
[T / F] this keyword can be passed as argument in the constructor call. True
[T / F] Custom Methods – implement the business rules for which the application is being developed True
[T / F] non-static Variables are variables stored in each object of a class, usually referred to as the non-static member fields of a class. True
[T / F] Encapsulation is implemented by using private True
[T / F] In Encapsulation, Class variables can be made read-only or write-only True
[T / F] Encapsulation is the way to add functions in a user defined structure. False
Which feature can be implemented using encapsulation? Inheritance Polymorphism Abstraction Overloading Abstraction
[T / F] In hierarchical inheritance, all the classes involve some kind of inheritance. False
How many types of inheritance can be used at a time in a single program? Any 4 types Any two types Any three types Any type, any number of times Any type, any number of times
Members which are not intended to be inherited are declared as ______ Protected Members Public Members Private Members Private members
Which language doesn't support single level inheritance? All languages support it Kotlin C++ Java All languages support it
If single inheritance is used, program will contain ______ At least 1 class At least 2 classes At least 3 classes At least 2 classes
This model of software development is process-centric or procedural since it concentrates on the procedures in a system A) Object-Oriented Programming (OOP) B) Procedural Programming ✅ C) Functional Programming D) Event-Driven Programming Procedural Programming
It describes the task to be performed on objects. These objects that have to be created and stored in the computer memory, A) Object-Oriented Programming (OOP) B) Procedural Programming C) Functional Programming D) Event-Driven Programming Object-Oriented Programming
It uses a collection of objects interacting with each other. A) Procedural Programming B) Object-Oriented Programming (OOP) C) Functional Programming D) Linear Programming Object-Oriented Programming
Reduced software complexities and realistic modelling through the use of various techniques A) Procedural Programming B) Object-Oriented Programming (OOP) C) Functional Programming D) Linear Programming Object-Oriented Programming
the process of picking out the common features of objects and procedures. This process focuses on the essential characteristics of an object. A) Encapsulation B) Inheritance C) Polymorphism D) Abstraction Abstraction
the process of hiding the implementation details of an object. A) Encapsulation B) Inheritance C) Polymorphism D) Abstraction Encapsulation
allows an object to extend its characteristics to another object. A) Encapsulation B) Inheritance C) Polymorphism D) Abstraction Inheritance
ability to process objects differently depending on their data type or class A) Encapsulation B) Inheritance C) Polymorphism D) Abstraction Polymorphism
A ____ is a template or blueprint that defines an object’s attributes and operations and that is created at design time A) Object B) Method C) Class D) Interface Class
An _____ is a running instance of a class that consumes memory and has a finite lifespan A) Object B) Method C) Class D) Interface Object
Exists when an object contains a reference to another object. A) Encapsulation B) Inheritance C) Aggregation D) Association Association
Referred to as the “kind of” or “is a” relationship. A) Encapsulation B) Inheritance C) Aggregation D) Association Inheritance
The parent class from which properties are inherited by another class Super Class Base Class Sub Class Derived Class Super Class / Base Class
Super Class is also known as? Base Class Sub Class Base Class
A new class with properties taken from a parent class Super Class Base Class Sub Class Sub Class / Derived Class
Sub Class is also known as? Super Class Base Class Sub Class Derived Class Derived Class
a well-encapsulated conceptual class. The objects of this class do not exist in real world Base Class Sub Class Abstract Class Abstract Class
It is used for specifying and visualizing complex software, usually large object-oriented project. It uses several types of diagrams such as the case diagram, class diagram, and state chart diagram A) BPMN B) DFD C) UML Unified Modeling Language (UML)
A ___ is used to describe the attributes and behaviours of objects in the system. A) Interface B) Method C) Class D) Object Class Diagram
Declared either at the start or end of a class definition. These variables identify the data stored in the object. A) Local variables B) Static variables C) Instance variables D) Global variables Instance Variables/Attributes
A method that is automatically executed when an object is created. This method is used to initialize the attributes. A) Destructor B) Static method C) Main method D) Constructor Constructor
Used to change or access the private data in an object A) Constructors B) Static methods C) Standard methods D) Destructor Standard Methods / Setter Getter Methods
A method that is used to change the data Mutator (Setter) Accessor (Getter) Mutator (Setter)
A method that is used to access or retrieve data Mutator (Setter) Accessor (Getter) Accessor (Getter)
Implement the business rules for which the application is being developed. A) Standard methods B) Constructors C) Business logic D) Custom methods Custom Methods
Contains a reference to the current object being constructed. It represents an instance of the class in which it appears. It can be used to access class variables and methods A) super B) self C) this D) new this
Variable: a variable that is only accessible within a class where it is declared. Method: a method that is only accessible within the class where it is declared. private
Variable: a variable that is accessible from all classes. Method: a method that is accessible from all classes. public
The ___ access modifier is accessible within and outside the package but through inheritance only. It can be applied on the data member, method and constructor. It can't be applied on the class. protected
variables stored in each object of a class, usually referred to as the non-static member fields of a class. A) Local variables B) Static variables C) Instance variables D) Global variables Instance Variables (non-static fields)
Stored in the class and are available to all objects of a class or objects of other classes if access is permitted. A) Local variables B) Instance variables C) Class variables D) Global variables Class Variables (static fields)
Data used in a method. This data is temporary and does not exist once the method has completed execution A) Local variables B) Instance variables C) Class variables D) Global variables Local Variables (method variables or local data)
[T / F] it is possible to access private variables if we provide public getter (accessor) and setter (mutator) methods. True
Created by: user-1798141
 

 



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