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Object Oriented Programing concepts useful beginner.............

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Object-Oriented Programming Concepts in Java PJ Dillon CS401 Slides adapted from Dr. Ramirez
Intro. to Object-Oriented Programming (OOP) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro. to OOP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Objects and Data Abstraction ,[object Object],[object Object],[object Object],[object Object],X 10 Y 5 +
Objects and Data Abstraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Objects and Data Abstraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Objects and Data Abstraction ,[object Object],[object Object],[object Object]
Objects and Data Abstraction ,[object Object],P xpoints [0,4,4,0] ypoints [0,0,2,2] npoints 4 addPoint() contains() translate() Thus, the operations are always implicitly acting on the object’s data Ex: translate means translate the points that make up P
Objects and Data Abstraction ,[object Object],[object Object],P xpoints [0,4,4,0] ypoints [0,0,2,2] npoints 4 addPoint() contains() translate() P2 xpoints [8,11,8]] ypoints [0,2,4] npoints 3 addPoint() contains() translate()
Encapsulation and Data Abstraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Encapsulation and Data Abstraction ,[object Object],[object Object],[object Object],[object Object],P xpoints [0,4,4,0] ypoints [0,0,2,2] npoints 4 addPoint() contains() translate()
Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Class Methods vs. Instance Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Class Methods vs. Instance Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Constructors, Accessors and Mutators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Constructors, Accessors and Mutators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Constructors, Accessors and Mutators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Simple Class Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
More on Classes and Objects ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Developing Another Example ,[object Object],[object Object],[object Object],[object Object],[object Object]
Developing Another Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wrappers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wrappers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wrappers ,[object Object],[object Object],[object Object],[object Object],int Integer double Double
Wrappers and Casting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wrappers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro. to Java Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro. to Java Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Text Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Text Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Files ,[object Object],[object Object],[object Object],[object Object]
File Streams ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Input Files ,[object Object],[object Object],[object Object],[object Object],[object Object]
Output Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Output Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Text vs. Binary Files ,[object Object],[object Object],[object Object],[object Object]
Text vs. Binary Files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Composition & Inheritance ,[object Object],[object Object],[object Object],[object Object],[object Object]
Composition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Composition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inheritance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inheritance and “is a” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inheritance and “is a” ,[object Object],[object Object],Animal Bird Human Fish is a is a is a
Extending Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
private, public and protected ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inheritance Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Java Class Hierarchy ,[object Object],[object Object],[object Object],[object Object],[object Object]
Polymorphism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Method Overloading ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Method Overloading ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Polymorphism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Polymorphism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Polymorphism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Animal move() move() move() ,[object Object],[object Object]
Object, Method and Instance Variable Access ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Object, Method and Instance Variable Access ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Object, Method and Instance Variable Access ,[object Object],[object Object],[object Object],[object Object],[object Object]
Object Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
toString() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
equals() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Contract of equals() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Contract of equals() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Contract of equals() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Template for equals() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
hashCode() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Composition or Inheritance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],Exceptions are objects that are throw n and catch ed Some exceptions are built into the language Others can be created and thrown by the programmer
Exceptions in Java ,[object Object],[object Object],try { // code that will normally execute } catch (ExceptionType1 e) { // code to "handle" this exception } catch (ExceptionType2 e) { // code to "handle" this exception } ... // can have many catches finally { // code to "clean up" before leaving try block }
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exceptions in Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Abstract Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Abstract Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
"Generic" Operations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
“Generic” Operations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Simple Sorting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Simple Sorting ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SelectionSort ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],60 15 10 75 40 20 50 35 7 6 5 4 3 2 1 0
SelectionSort ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Comparable Interface ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Comparable ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Search ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Search ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],75 60 50 40 35 20 15 10 7 6 5 4 3 2 1 0
Binary Search ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Search ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Collections ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Collections ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
List ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
List Implementation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ArrayList ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
LinkedList ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Which and How to Use ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Set ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
HashSet ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Iterators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Iterators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Order in Sets ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Queue ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Stack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Stack Implementation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Map ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Map Implementation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Iterating over a Map ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Generics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Generics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Writing a Generic Class ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Subtyping with Generics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wildcards in Generics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Wildcards in Generics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bounded Wildcards ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bounded Wildcards ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bounded Wildcards ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Generic Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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OOP Principles

  • 1. Object-Oriented Programming Concepts in Java PJ Dillon CS401 Slides adapted from Dr. Ramirez
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Editor's Notes

  1. Consider P.translate(3,3) vs. P2.translate(3,3) In both cases we are moving a Polygon 3 over and 3 down – the difference is which Polygon is being moved
  2. Demonstrate propagation on board
  3. We can’t write a method that can sort “anything”, but we can write a method that can sort any Comparable objects – note the use of the interface here
  4. See text for finding minimum value of an array. Note that sorting here is simply finding the minimum value and then swapping over and over – but considering a smaller array each time
  5. Grocery List, Movie List, Buddy List, To-Do List, Team Roster, Course Roster, Venue List, Guest List, Group List