Coding with John

@UC42pOSNg804f1wCcj7qL0mA - 423K subscribers

Hi, I'm John! I'm a Lead Java Software Engineer and I've been in the programming industry for more than a decade. I love sharing what I've learned over the years in a way that's understandable for all levels of Java learners. Learn or improve your Java by watching it being coded live!

Home Videos Live Playlists

JVM, JRE, and JDK - Fully Explained in 5 Minutes

JVM, JRE, and JDK - Fully Explained in 5 Minutes Coding with John

87.5K views - 1 year ago

New Java Version 22 - The 3 Best New Features You'll ACTUALLY Use

New Java Version 22 - The 3 Best New Features You'll ACTUALLY Use Coding with John

135.6K views - 1 year ago

Java is "Strongly Typed"? - Here's What That ACTUALLY Means

Java is "Strongly Typed"? - Here's What That ACTUALLY Means Coding with John

101.9K views - 2 years ago

Java's Garbage Collection Explained - How It Saves your Lazy Programmer Butt

Java's Garbage Collection Explained - How It Saves your Lazy Programmer Butt Coding with John

135.7K views - 2 years ago

Static vs Non-Static Variables and Methods In Java - Full Simple Tutorial

Static vs Non-Static Variables and Methods In Java - Full Simple Tutorial Coding with John

312.7K views - 2 years ago

How I Memorized ALL IntelliJ Shortcuts Effortlessly

How I Memorized ALL IntelliJ Shortcuts Effortlessly Coding with John

72.6K views - 2 years ago

Java's Hello World Is About To Change Forever

Java's Hello World Is About To Change Forever Coding with John

201.8K views - 2 years ago

Selection Sort Tutorial in Java: The Snail's Guide to Sorting

Selection Sort Tutorial in Java: The Snail's Guide to Sorting Coding with John

88.2K views - 2 years ago

Vectors in Java: The 1 Situation You Might Want To Use Them

Vectors in Java: The 1 Situation You Might Want To Use Them Coding with John

102.1K views - 2 years ago

Binary Search in Java - Full Simple Coding Tutorial

Binary Search in Java - Full Simple Coding Tutorial Coding with John

162.7K views - 3 years ago

Set and HashSet in Java - Full Tutorial

Set and HashSet in Java - Full Tutorial Coding with John

304.4K views - 3 years ago

Why Are All The Best Java YouTubers Bald? - John Answers Your Comments

Why Are All The Best Java YouTubers Bald? - John Answers Your Comments Coding with John

20.9K views - 3 years ago

Java's Creators Rejected Multiple Inheritance - Here's Why

Java's Creators Rejected Multiple Inheritance - Here's Why Coding with John

76.5K views - 3 years ago

LeetCode Exercise In Java - Longest Substring Without Repeating Characters - FAST Solution

LeetCode Exercise In Java - Longest Substring Without Repeating Characters - FAST Solution Coding with John

113.5K views - 3 years ago

Java Reflection Explained - bɘniɒlqxƎ noiɟɔɘlʇɘЯ ɒvɒᒐ

Java Reflection Explained - bɘniɒlqxƎ noiɟɔɘlʇɘЯ ɒvɒᒐ Coding with John

235.5K views - 3 years ago

LeetCode Exercise in Java Tutorial - Two Sum FAST Solution

LeetCode Exercise in Java Tutorial - Two Sum FAST Solution Coding with John

236.1K views - 3 years ago

Java Custom Exceptions Tutorial - It's Way Easier Than You Think

Java Custom Exceptions Tutorial - It's Way Easier Than You Think Coding with John

208.6K views - 3 years ago

Optionals In Java - Simple Tutorial

Optionals In Java - Simple Tutorial Coding with John

264.3K views - 3 years ago

How To Call a REST API In Java - Simple Tutorial

How To Call a REST API In Java - Simple Tutorial Coding with John

336.1K views - 3 years ago

Annotations In Java Tutorial - How To Create And Use Your Own Custom Annotations

Annotations In Java Tutorial - How To Create And Use Your Own Custom Annotations Coding with John

310K views - 3 years ago

Records In Java - Full Tutorial - The Best New Java Feature You're Not Using

Records In Java - Full Tutorial - The Best New Java Feature You're Not Using Coding with John

303.8K views - 3 years ago

Top 5 Terrible Java Coding Techniques You Need to Be Using Right Now

Top 5 Terrible Java Coding Techniques You Need to Be Using Right Now Coding with John

123.9K views - 3 years ago

Null Pointer Exceptions In Java - What EXACTLY They Are and How to Fix Them

Null Pointer Exceptions In Java - What EXACTLY They Are and How to Fix Them Coding with John

103.3K views - 3 years ago

Lambda Expressions in Java - Full Simple Tutorial

Lambda Expressions in Java - Full Simple Tutorial Coding with John

922.3K views - 4 years ago

How To Create Variables That Don't Suck - Writing Clean Java Code

How To Create Variables That Don't Suck - Writing Clean Java Code Coding with John

60K views - 4 years ago

Java Unit Testing with JUnit - Tutorial - How to Create And Use Unit Tests

Java Unit Testing with JUnit - Tutorial - How to Create And Use Unit Tests Coding with John

866.9K views - 4 years ago

How To Debug Java Code The Right Way - Eclipse Debugger Full Tutorial

How To Debug Java Code The Right Way - Eclipse Debugger Full Tutorial Coding with John

226.1K views - 4 years ago

Generics In Java - Full Simple Tutorial

Generics In Java - Full Simple Tutorial Coding with John

1.4M views - 4 years ago

Fibonacci Series In Java With Recursion - Full Tutorial (FAST Algorithm)

Fibonacci Series In Java With Recursion - Full Tutorial (FAST Algorithm) Coding with John

199.4K views - 4 years ago

Quicksort Sort Algorithm in Java - Full Tutorial With Source

Quicksort Sort Algorithm in Java - Full Tutorial With Source Coding with John

296.1K views - 4 years ago

Insertion Sort Algorithm in Java - Full Tutorial With Source

Insertion Sort Algorithm in Java - Full Tutorial With Source Coding with John

145.3K views - 4 years ago

How to Run Java Programs With Command Prompt (cmd) and Notepad in Windows

How to Run Java Programs With Command Prompt (cmd) and Notepad in Windows Coding with John

546.8K views - 4 years ago

Checked vs. Unchecked Exceptions in Java Tutorial - What's The Difference?

Checked vs. Unchecked Exceptions in Java Tutorial - What's The Difference? Coding with John

267.6K views - 4 years ago

Recursion in Java Full Tutorial - How to Create Recursive Methods

Recursion in Java Full Tutorial - How to Create Recursive Methods Coding with John

351K views - 4 years ago

Super Keyword in Java Full Tutorial - How to Use "super"

Super Keyword in Java Full Tutorial - How to Use "super" Coding with John

267.8K views - 4 years ago

This Keyword in Java Full Tutorial - How to Use "this"

This Keyword in Java Full Tutorial - How to Use "this" Coding with John

195.5K views - 4 years ago

Java Enums Explained in 6 Minutes

Java Enums Explained in 6 Minutes Coding with John

321.4K views - 4 years ago

Upcasting and Downcasting in Java - Full Tutorial

Upcasting and Downcasting in Java - Full Tutorial Coding with John

219.7K views - 4 years ago

Java Constructors - Full Tutorial

Java Constructors - Full Tutorial Coding with John

523.1K views - 4 years ago

30+ Eclipse Shortcuts Every Java Programmer Should Know

30+ Eclipse Shortcuts Every Java Programmer Should Know Coding with John

163K views - 4 years ago

Java Strings are Immutable - Here's What That Actually Means

Java Strings are Immutable - Here's What That Actually Means Coding with John

657K views - 4 years ago

Java is ALWAYS Pass By Value. Here's Why

Java is ALWAYS Pass By Value. Here's Why Coding with John

149K views - 4 years ago

Abstract Classes and Methods in Java Explained in 7 Minutes

Abstract Classes and Methods in Java Explained in 7 Minutes Coding with John

701.7K views - 4 years ago

Learn Java in One Video - 15-minute Crash Course

Learn Java in One Video - 15-minute Crash Course Coding with John

955.5K views - 4 years ago

How to Break Java with a Ridiculous Variable Name

How to Break Java with a Ridiculous Variable Name Coding with John

19.5K views - 4 years ago

Why Java Is So Hard To Learn

Why Java Is So Hard To Learn Coding with John

192.8K views - 4 years ago

Never Write a Getter or Setter in Java Again

Never Write a Getter or Setter in Java Again Coding with John

161.5K views - 4 years ago

Java Anonymous Inner Classes Explained in 6 Minutes

Java Anonymous Inner Classes Explained in 6 Minutes Coding with John

120.7K views - 4 years ago

Create Your First Java Program from Scratch in Minutes

Create Your First Java Program from Scratch in Minutes Coding with John

164.6K views - 4 years ago

Multithreading in Java Explained in 10 Minutes

Multithreading in Java Explained in 10 Minutes Coding with John

1.2M views - 4 years ago

Inner Class Java Tutorial - Creating and Using Inner Classes

Inner Class Java Tutorial - Creating and Using Inner Classes Coding with John

155.1K views - 4 years ago

Map and HashMap in Java - Full Tutorial

Map and HashMap in Java - Full Tutorial Coding with John

749.1K views - 4 years ago

LinkedList vs ArrayList in Java Tutorial - Which Should You Use?

LinkedList vs ArrayList in Java Tutorial - Which Should You Use? Coding with John

684.8K views - 4 years ago

Final Keyword in Java Full Tutorial - Final Classes, Methods, and Variables

Final Keyword in Java Full Tutorial - Final Classes, Methods, and Variables Coding with John

145K views - 4 years ago

Create a Java Mortgage Payment Calculator - Full Tutorial

Create a Java Mortgage Payment Calculator - Full Tutorial Coding with John

19.9K views - 4 years ago

Create a Sudoku Solver In Java In 20 Minutes - Full Tutorial

Create a Sudoku Solver In Java In 20 Minutes - Full Tutorial Coding with John

340.1K views - 4 years ago

What is a POJO in Java? Almost EVERYONE Gets This Wrong

What is a POJO in Java? Almost EVERYONE Gets This Wrong Coding with John

132.3K views - 4 years ago

How Slow is This Awful Sorting Algorithm?

How Slow is This Awful Sorting Algorithm? Coding with John

6.3K views - 4 years ago

Java File Input/Output - It's Way Easier Than You Think

Java File Input/Output - It's Way Easier Than You Think Coding with John

620.7K views - 4 years ago

Java Polymorphism Fully Explained In 7 Minutes

Java Polymorphism Fully Explained In 7 Minutes Coding with John

429.9K views - 4 years ago