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Bill Barnum

@billbarnum· 17K subscribers· 89 lessons on Merit· 18 topics

AP Computer Science A · AP Computer Science Principles

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AP Computer Science A - Unit 1: Primitive Types

115K views on YouTube · 5 years ago

Casting an Object (Upcasting and Downcasting) - Java Tutorial

71K views on YouTube · 8 years ago

AP CSA · Expressions, Assignment, and Casting

Random Numbers With Math.random() (Java Tutorial)

67K views on YouTube · 7 years ago

AP CSA · The Math Class and Wrapper Classes

Binary Search (Java Tutorial)

63K views on YouTube · 8 years ago

AP CSA · Searching and Sorting

substring And length (Java String Methods)

47K views on YouTube · 3 years ago

AP CSA · String Methods

AP Computer Science A - Unit 5: Writing Classes

43K views on YouTube · 4 years ago

AP CSA · Objects, Classes, and Constructors

AP Computer Science A - Unit 6: Arrays

41K views on YouTube · 4 years ago

AP Computer Science A - Unit 4: Iteration and Loops

36K views on YouTube · 4 years ago

AP Computer Science A - Unit 9: Inheritance (This topic is NOT on the new curriculum)

36K views on YouTube · 2 years ago

AP CSA · Superclasses and Subclasses

AP Computer Science A - Unit 3: Boolean Expressions And if Statements

33K views on YouTube · 5 years ago

AP CSA · if, else if, and else

Static Methods and Non Static Methods (Java Tutorial)*

32K views on YouTube · 7 years ago

AP CSA · Static Variables and Methods, and this

AP Computer Science A - Unit 7: ArrayLists

29K views on YouTube · 2 years ago

06 - App Lab (Code.org) Using a ⏱️ Timed Loop ⏱️ to Move Objects

28K views on YouTube · 8 years ago

AP CSA · Objects, Classes, and Constructors

AP Computer Science A - Unit 10: Recursion

28K views on YouTube · 3 years ago

AP CSA · Recursion

Inheritance and Polymorphism (Java Tutorial)

26K views on YouTube · 2 years ago

AP CSA · Overriding and Polymorphism

AP Computer Science A - Unit 2: Using Objects

24K views on YouTube · 1 year ago

AP CSA · Objects, Classes, and Constructors

AP Computer Science A - Unit 8: 2D Arrays

24K views on YouTube · 2 years ago

AP CSA · 2D Arrays

Linear Search (Sequential Search) in Java

23K views on YouTube · 8 years ago

AP CSA · Searching and Sorting

Traversing an Array (Java Tutorial)

17K views on YouTube · 5 years ago

AP CSA · while and for Loops

Alice 3 Tutorial - #15 - While Loop

15K views on YouTube · 8 years ago

AP CSA · while and for Loops

Primitive Data Types (Java Tutorial)

14K views on YouTube · 8 years ago

AP CSA · Variables and Primitive Data Types

Boolean Expressions (Java Tutorial)

13K views on YouTube · 8 years ago

AP CSA · Expressions, Assignment, and Casting

Scope and Lifetime of Variables (Java Tutorial)

13K views on YouTube · 6 years ago

AP CSA · Variables and Primitive Data Types

Objects and References with Polymorphism (Java Tutorial)

12K views on YouTube · 8 years ago

AP CSA · Objects, Classes, and Constructors