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Understanding the AP CS A
What Is This Course About?
Test Preparation Guidelines
Exam Overview
Test Structure
Scoring Guidelines
Before We Begin
Introduction to Computers
Introduction to Programming
Introduction to Java
What is Java?
Writing Your First Java Program
Printing Styles
Commenting in Java Code
Look Back: Introduction to Java
Free Response Question: Printing Styles
Solution Review: Printing Styles
Quiz Yourself on Printing Styles and Comments
Unit 1: Primitive Types
Variables
Types of Variables
Primitive Data Types
Operators
Arithmetic Operators
Assignment Operators
Type Casting
Rounding Double Type Variables
The final Keyword
Common Mistakes To Avoid
Look Back: Primitive Types
Free Response Question 1: Equation Construction
Solution Review 1: Equation Construction
Free Response Question 2: Expression Evaluation
Solution Review 2: Expression Evaluation
Quiz Yourself on Variables and Data Types
Unit 2-1: Using Objects
Introduction to Classes
Objects: Instances of Classes
Constructors
Methods
Parameters and Return Types in Methods
Different Classifications of Methods
Look Back: Using Objects
Quiz Yourself on Objects
Unit 2-2: Java Strings
Introduction to Strings
API, Libraries, and Packages
Basic Properties of a String
Concatenation and Escape Sequences
String Methods
More on String Methods
Common Mistakes To Avoid
Look Back: Java Strings
Free Response Question 1: Message Encryption
Solution Review: Message Encryption
Quiz Yourself on Strings
Unit 2-3: Java Math and Wrapper Classes
Java Wrapper Class: Integer
Java Wrapper Class: Double
Autoboxing and Unboxing
Using the Math Class
Basic Math Functions
Look Back: Java Math and Wrapper Classes
Free Response Question 1: Visualize a Triangle in a Circle
Solution Review: Visualize a Triangle in a Circle
Free Response Question 2: Visualize a Vector and Its Components
Solution Review: Visualize a Vector and Its Components
Quiz Yourself on Math and Wrapper Classes
Unit 3: Boolean Expressions and if Statements
Boolean Expressions
The if Statement
The if-else Structure
The else if Statement
Free Response Question 1: Assign Grades to Students
Solution Review: Assign Grades to Students
Compound Boolean Expressions
Equivalent Boolean Expressions
Comparing Objects
Common Mistakes To Avoid
Look Back: Boolean Expressions and if Statements
Free Response Question 2: Design an ATM
Solution Review: Design an ATM
Quiz Yourself on Boolean Expressions and if Statements
Unit 4: Iteration
Introduction to Loops
while Loops
for Loops
Nested for loops
Free Response Question 1: Car Parking Robot
Solution Review: Car Parking Robot
String Traversals
Common Mistakes To Avoid
Look Back: Iteration
Free Response Question 2: Is String a Palindrome?
Solution Review: Is String a Palindrome?
Quiz Yourself on Iteration
Project I: Guess the Right Number
Getting Started
The Game Logic
Time to Code
Solution Review
Unit 5: Writing Classes
The Anatomy of a Java Class
Access Specifiers
The Role of a Constructor
Accessor Methods
Mutator Methods
Introduction to Data Hiding
Common Mistakes To Avoid
Static Variables and Methods
The this Keyword
Ethical and Social Implications of Computing Systems
Look Back: Writing Classes
Free Response Question: Design a PlayStation
Solution Review: Design a PlayStation
Quiz Yourself on Classes
Unit 6: Arrays
Introduction to Arrays
Array Creation and Access
Traversing Arrays
Enhanced for Loop for Arrays
Common Mistakes To Avoid
Look Back: Arrays
Free Response Question: Find the Top Scorer in a Class
Solution Review: Find the Top Scorer in a Class
Quiz Yourself on Arrays
Unit 7-1: ArrayList
Introduction to ArrayList
ArrayList Methods
Traversing an ArrayList
Common Mistakes To Avoid
Look Back: ArrayList
Free Response Question 1: Removing Duplicates From an ArrayList
Solution Review: Removing Duplicates From an ArrayList
Free Response Question 2: Is ArrayList a Palindrome?
Solution Review: Is ArrayList a Palindrome?
Quiz Yourself on ArrayList
Unit 7-2: Searching and Sorting Algorithms
Searching Algorithms
Selection Sort
Insertion Sort
Ethical Issues Around Data Collection
Look Back: Searching and Sorting Algorithms
Tracing Challenge: What's the Order?
Quiz Yourself on Searching and Sorting Algorithms
Unit 8: 2D Arrays
Two Dimensional (2D) Arrays
Traversing 2D Arrays
Common Mistakes To Avoid
Look Back: 2D Arrays
Free Response Question 1: Mirror a 2D Array
Solution Review: Mirror a 2D Array
Free Response Question 2: Multiply the Matrices
Solution Review: Multiply the Matrices
Quiz Yourself on 2D Arrays
Project II: Tic-Tac-Toe
Getting Started
Time To Code: Task I to III
Solution Review: Task I to III
Time To Code: Task IV
Solution Review: Task IV
Time To Code: Task V and VI
Solution Review: Task V and VI
Project III: Amazon's Top 50 Bestselling Books Dataset
Getting Started
Reading the Dataset
Time To Code
Solution Review
Unit 9-1: Inheritance
Introduction to Inheritance
Superclasses and Subclasses
Constructors of Subclasses
Types of Inheritance
Look Back: Inheritance
Free Response Question: Design a Banking Application
Solution Review: Design a Banking Application
Quiz Yourself on Inheritance
Unit 9-2: Polymorphism
Introduction to Polymorphism
Overriding Methods
Polymorphism in Action
Object Superclass
Look Back: Polymorphism
Free Response Question: Manage the Sign Boards
Solution Review: Manage the Sign Boards
Quiz Yourself on Polymorphism
Unit 9-3: Abstract Classes and Interfaces
Abstraction in Java
Interfaces in Java
Look Back: Abstract Classes and Interfaces
Quiz Yourself on Abstraction and Interfaces
Unit 10: Recursion
Overview of Recursion
The Structure of a Recursive Program
Example 1: The Factorial of a Number
Example 2: The Fibonacci Series
Example 3: Merge Sort
Look Back: Recursion
Free Response Question: Recursive Binary Search
Solution Review: Recursive Binary Search
Quiz Yourself on Recursion
Project IV: Doctor on Call
Getting Started
Time To Code: Task I to Task V
Time To Code: Task VI to Task IX
Solution Review: Task I to Task V
Solution Review: Task VI to Task IX
Java Tools and Tips
Debugging in Java
Best Java Coding Practices
Javadoc
Wrapping Up
Appendix: Java Quick Reference
Conclusion
Course Assessment
AP CS A Practice Exam 1
Course Assessment
AP CS A Practice Exam 2
Course Assessment
AP CS A Practice Exam 3
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Introduction to Polymorphism
Get an overview of 'polymorphism'.
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What is polymorphism?
Types of polymorphism
Static polymorphism
Dynamic polymorphism
What is polymorphism?
Polymorphism
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