Bill Barnum

@UCECwUQMY-gPknLBgTyE4Hzw - 16.8K subscribers

This channel provides a variety of tutorials for programming languages, including Java, Code.org App Lab, and Alice 3. The lessons are focused on helping beginners understand the underlying concepts and use them in their own programs.

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Using Methods (Java Tutorial)

Using Methods (Java Tutorial) Bill Barnum

315 views - 5 months ago

Strings (Java Tutorial)

Strings (Java Tutorial) Bill Barnum

89 views - 5 months ago

Java Math Class

Java Math Class Bill Barnum

55 views - 5 months ago

Using Classes and Objects in Java

Using Classes and Objects in Java Bill Barnum

186 views - 5 months ago

Java Primitive vs Reference (Object) Types

Java Primitive vs Reference (Object) Types Bill Barnum

257 views - 5 months ago

Java Classes and Objects (Complete Tutorial)

Java Classes and Objects (Complete Tutorial) Bill Barnum

469 views - 5 months ago

AP Computer Science A - Unit 2: Using Objects

AP Computer Science A - Unit 2: Using Objects Bill Barnum

22K views - 1 year ago

A Wizard Explains Iteration and Recursion (Computer Science)

A Wizard Explains Iteration and Recursion (Computer Science) Bill Barnum

1.3K views - 1 year ago

2D Arrays (Java Tutorial)

2D Arrays (Java Tutorial) Bill Barnum

1K views - 2 years ago

Inheritance and Polymorphism (Java Tutorial)

Inheritance and Polymorphism (Java Tutorial) Bill Barnum

23K views - 2 years ago

AP Computer Science A - Unit 8: 2D Arrays

AP Computer Science A - Unit 8: 2D Arrays Bill Barnum

23K views - 2 years ago

Temple of Arrays - AP Computer Science A FRQ

Temple of Arrays - AP Computer Science A FRQ Bill Barnum

386 views - 2 years ago

Teach Virtual Reality Programming With Alice 3

Teach Virtual Reality Programming With Alice 3 Bill Barnum

2.2K views - 2 years ago

Create Task 2026 - Plagiarism Policy (AP Computer Science Principles)

Create Task 2026 - Plagiarism Policy (AP Computer Science Principles) Bill Barnum

5.2K views - 2 years ago

Create Task 2026 - Citing Code And Resources (AP Computer Science Principles)

Create Task 2026 - Citing Code And Resources (AP Computer Science Principles) Bill Barnum

11K views - 2 years ago

Create Task 2026 - Project & Code Walkthrough (AP Computer Science Principles)

Create Task 2026 - Project & Code Walkthrough (AP Computer Science Principles) Bill Barnum

31K views - 2 years ago

Traversing a Java ArrayList (Printing an ArrayList)

Traversing a Java ArrayList (Printing an ArrayList) Bill Barnum

1.4K views - 2 years ago

AP Computer Science A - Unit 7: ArrayLists

AP Computer Science A - Unit 7: ArrayLists Bill Barnum

28K views - 2 years ago

Convert an Array to an ArrayList (Java Tutorial)

Convert an Array to an ArrayList (Java Tutorial) Bill Barnum

826 views - 2 years ago

Search And Remove From ArrayLists (Java Tutorial)

Search And Remove From ArrayLists (Java Tutorial) Bill Barnum

709 views - 2 years ago

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

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

35K views - 2 years ago

Java Constructor (Part 1) - Standalone Constructors

Java Constructor (Part 1) - Standalone Constructors Bill Barnum

1.1K views - 2 years ago

Java Constructor (Part 3) - Passing Data to a Superclass Constructor

Java Constructor (Part 3) - Passing Data to a Superclass Constructor Bill Barnum

619 views - 2 years ago

Polymorphism (Java Tutorial)

Polymorphism (Java Tutorial) Bill Barnum

1.4K views - 2 years ago

Inheritance in Java (Part 4 - Accessing Private Fields in a Superclass)

Inheritance in Java (Part 4 - Accessing Private Fields in a Superclass) Bill Barnum

1.3K views - 2 years ago

Inheritance in Java (Part 3 - Calling Methods in a Superclass)

Inheritance in Java (Part 3 - Calling Methods in a Superclass) Bill Barnum

923 views - 2 years ago

Inheritance in Java (Part 2 - Overriding Methods)

Inheritance in Java (Part 2 - Overriding Methods) Bill Barnum

842 views - 2 years ago

Inheritance in Java (Part 1 - Inheriting Methods)

Inheritance in Java (Part 1 - Inheriting Methods) Bill Barnum

1.3K views - 2 years ago

Java Constructor (Part 2) - Calling Constructors in a Superclass

Java Constructor (Part 2) - Calling Constructors in a Superclass Bill Barnum

998 views - 2 years ago

Operator Precedence / Order Of Operation (Java Tutorial)

Operator Precedence / Order Of Operation (Java Tutorial) Bill Barnum

4.3K views - 2 years ago

Arrays (Java Tutorial)

Arrays (Java Tutorial) Bill Barnum

8.2K views - 3 years ago

Java ArrayList Bill Barnum

5.5K views - 3 years ago

A Knight's Guide To For Loops (Java Programming)

A Knight's Guide To For Loops (Java Programming) Bill Barnum

252 views - 3 years ago

AP Computer Science A - Unit 10: Recursion

AP Computer Science A - Unit 10: Recursion Bill Barnum

27K views - 3 years ago

Head Recursion and Tail Recursion

Head Recursion and Tail Recursion Bill Barnum

7.7K views - 3 years ago

Tree Recursion and Binary Recursion (Computer Science)

Tree Recursion and Binary Recursion (Computer Science) Bill Barnum

4.4K views - 3 years ago

AP CSA - 2021 FRQ Problem 1 - WordMatch (Exam Practice and Review)

AP CSA - 2021 FRQ Problem 1 - WordMatch (Exam Practice and Review) Bill Barnum

789 views - 3 years ago

ChatGPT vs Java: An AI Experiment

ChatGPT vs Java: An AI Experiment Bill Barnum

1.5K views - 3 years ago

Practice Recursion Problem

Practice Recursion Problem Bill Barnum

861 views - 3 years ago

Practice Binary Recursion Problem (Tree Recursion)

Practice Binary Recursion Problem (Tree Recursion) Bill Barnum

635 views - 3 years ago

Tricky Practice Java Recursion Problem (Explanation And Walkthrough)

Tricky Practice Java Recursion Problem (Explanation And Walkthrough) Bill Barnum

820 views - 3 years ago

Understand And Fix A Java Null Pointer Exception (Full Explanation)

Understand And Fix A Java Null Pointer Exception (Full Explanation) Bill Barnum

6.2K views - 3 years ago

Identifier Expected Error (Java Tutorial)

Identifier Expected Error (Java Tutorial) Bill Barnum

13K views - 3 years ago

substring And length (Java String Methods)

substring And length (Java String Methods) Bill Barnum

46K views - 3 years ago

Sum Of Odds In Java (1 to 100)

Sum Of Odds In Java (1 to 100) Bill Barnum

1.6K views - 3 years ago

Using Java Classes and Objects

Using Java Classes and Objects Bill Barnum

4.5K views - 3 years ago

Recursion Explained

Recursion Explained Bill Barnum

2.9K views - 3 years ago

Sequencing, Selection, And Iteration - Block Code - App Lab (Code.org)

Sequencing, Selection, And Iteration - Block Code - App Lab (Code.org) Bill Barnum

8K views - 4 years ago

Sequencing, Selection, And Iteration - Text Code - App Lab (Code.org)

Sequencing, Selection, And Iteration - Text Code - App Lab (Code.org) Bill Barnum

4K views - 4 years ago

Parameters and Abstraction - Block Code - App Lab (Code.org)

Parameters and Abstraction - Block Code - App Lab (Code.org) Bill Barnum

4.6K views - 4 years ago

Parameters and Abstraction - Text Code - App Lab (Code.org)

Parameters and Abstraction - Text Code - App Lab (Code.org) Bill Barnum

1.3K views - 4 years ago

AP Computer Science A - Unit 6: Arrays

AP Computer Science A - Unit 6: Arrays Bill Barnum

40K views - 4 years ago

Display A List (Array) On The Screen - Block Code - Code.org (App Lab)

Display A List (Array) On The Screen - Block Code - Code.org (App Lab) Bill Barnum

8.6K views - 4 years ago

Display A List (Array) On The Screen - Text Code - Code.org (App Lab)

Display A List (Array) On The Screen - Text Code - Code.org (App Lab) Bill Barnum

7.8K views - 4 years ago

Filter A List (Array) - Block Code - Code.org (App Lab)

Filter A List (Array) - Block Code - Code.org (App Lab) Bill Barnum

6.9K views - 4 years ago

Filter A List (Array) - Text Code - Code.org (App Lab)

Filter A List (Array) - Text Code - Code.org (App Lab) Bill Barnum

1.8K views - 4 years ago

For Loop - App Lab (Code.org)

For Loop - App Lab (Code.org) Bill Barnum

7.4K views - 4 years ago

App Lab (Code.org) - Get Data From A Text Box (Block Based Code)

App Lab (Code.org) - Get Data From A Text Box (Block Based Code) Bill Barnum

6.9K views - 4 years ago

App Lab (Code.org) - Get Data From A Text Box (Text Based Code)

App Lab (Code.org) - Get Data From A Text Box (Text Based Code) Bill Barnum

4.9K views - 4 years ago

AP Computer Science A - Unit 5: Writing Classes

AP Computer Science A - Unit 5: Writing Classes Bill Barnum

42K views - 4 years ago