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OOP - Mod 5
| Answer | |
|---|---|
| ______ - for all classes ________ - only within its class __________- subclasses only | public private protected (#) |
| Class: a class that can never be sub-classed Variable: constant variable Method: a method that cannot be overridden | final modifier |
| The ____modifier is accessible only within the package. If you don't use any modifier, it is treated as ________ by ___________ | default |
| 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 |
| Variable: a variable that is accessible from all classes. Method: a method that is accessible from all classes. | public |
| 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: used in defining a class variable. Method: used in defining a class method. | static mofier/qualifier |
| ___________-accessed by classes within the same package ___________- no symbol indicates default access ___________ - represents abstract class method ___________- represents static method or attribute | ~package "" italics underline |
| represents the concepts in the domain | conceptual |
| a template or blueprint that defines an object’s attributes and operations and that is created at design | class |
| a method that is automatically executed when an object is created. This method is used to initialize the attributes | constructor |
| a method that is used to access or retrieve data | Accessor (Getter) |
| a method that is used to change the data. | Mutator (Setter) |
| a new class with properties taken from a parent class | subclass (derived class) |
| a well-encapsulated conceptual class. The objects of this class do not exist in real world | abstract class |
| ability to process objects differently depending on their data type or class | Polymorphism |
| Accessibility: | Public (+), Private (-), Protected (#) |
| accessible from all objects | class variable |
| allows an object to extend its characteristics to another object. | Inheritance |
| are the actions performed on that data | operations |
| are the data contained in a class | attributes |
| 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 | this keyword |
| data used in a method. This data is temporary and does not exist once the method has completed execution | Local Variables (method variables or local data) |
| declared either at the start or end of a class definition. These variables identify the data stored in the object. | Attributes |
| describes how classes will implement their interface | Implementation |
| exists when an object contains a reference to another object. Referred to as the “has a” relationship | Association |
| expressed in terms of: one to one, one to many, and many to many | Cardinality |
| focus is on the interfaces of Abstract Data Type (ADTs) in the software | Specification |
| implement the business rules for which the application is being developed. | Custom Methods |
| In a class diagram, which of the following would represent a static method? A) Italicized method name B) Underlined method name C) Bold method name D) Method name with a + symbol | B) Underlined method name |
| In the context of object-oriented programming, which relationship is described as an “is-a” relationship? A) Association B) Encapsulation C) Inheritance D) Abstraction | C) Inheritance |
| In UML, what does the + symbol represent in a class diagram? A) Private access B) Protected access C) Public access D) Package access | C) Public access |
| is a running instance of a class that consumes memory and has a finite lif | object |
| is a general-purpose notational language 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 | Unified Modeling Language (UML) |
| is a technique of solving a problem and breaking it down into smaller parts and solving each of the smaller problems | Procedural Programming |
| is used to describe the attributes and behaviors of objects in the system | class diagram |
| It describes the task to be performed on objects. These objects that have to be created and stored in the computer memory, contain data and instructions to perform tasks specific to that object | Object-oriented programming |
| It uses a collection of objects interacting with each other. | Object-oriented programming |
| referred to as the “kind of” or “is a” relationship | Inheritance |
| specific for an object | Instance Variables |
| T OR F: A diagram can be interpreted from various perspectives | T |
| The focus of {_________- is to break down a programming task into a collection of variables, data structures, and subroutines | PROCEDURAL PROGRAMMING |
| the parent class from which properties are inherited by another class | superclass (base class) |
| the process of hiding the implementation details of an object. | Encapsulation |
| the process of picking out the common features of objects and procedures. This process focuses on the essential characteristics of an object | Abstraction |
| this model of software development is process-centric or procedural since it concentrates on the procedures in a system | Procedural Programming |
| used to change or access the private data in an object. | Standard Methods |
| variables stored in each object of a class, usually referred to as the non-static member fields of a class | Instance Variables (non-static fields) |
| variables stored in the class and are available to all objects of a class or objects of other classes if access is permitted, usually referred to as the static members of the class. | Class Variables (static fields ) |
| What is the purpose of the this keyword in Java? A) Refers to the superclass of the current object. B) Refers to the static members of the class. C) Refers to the current instance of the class. D) Refers to the main method of the class. | C) Refers to the current instance of the class. |
| Which concept in OOP allows a subclass to define its own behavior while inheriting the interface from a parent class? A) Encapsulation B) Polymorphism C) Abstraction D) Inheritance | B) Polymorphism |
| Which modifier allows a method to be accessed by any class? A) private B) protected C) public D) final | C) public |
| Which of the following best describes encapsulation? | B) Restricting direct access to some of an object's components. |
| Which of the following is NOT a benefit of OOP? A) Code reusability B) Simplified debugging C) Global variable usage D) Easier maintenance | C) Global variable usage |
| Which of the following OOP principles is demonstrated by the ability of different classes (such as Circle and Square) to implement a method draw() in their own way? A) Abstraction B) Inheritance C) Polymorphism D) Encapsulation | C) Polymorphism |
| Which of the following statements is true about abstract classes? | C) An abstract class can have both abstract and concrete methods. |
Created by:
hdjks