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

Coding with John February 28, 2022
Video Thumbnail

Coding with John

View Channel

About

No channel description available.

You May Also Like

Java Developer Must-Haves

AI-recommended products based on this video

Loading...
LEGO Speed Champions Oracle Red Bull Racing RB20 F1 Race Car Model Kits - Building Set for Adults, Ages 18+ with Realistic Features - Red Bull F1 DIY Crafts for Display - Gift Idea for F1 Fans - 77243

LEGO Speed Champions Oracle Red Bull Racing RB20 F1 Race Car Model Kits - Building Set for Adults, Ages 18+ with Realistic Features - Red Bull F1 DIY Crafts for Display - Gift Idea for F1 Fans - 77243

(353)
$29.98$29.53
FREE delivery Sat, Jun 14 on your first order
1K+ bought in past month
Loading...
Complete Canadian Curriculum: Grade 4 (Enriched Edition): A Grade 4 integrated workbook covering Math, English, Social Studies, and Science

Complete Canadian Curriculum: Grade 4 (Enriched Edition): A Grade 4 integrated workbook covering Math, English, Social Studies, and Science

(18)
$13.98
FREE delivery Thu, Nov 27 on your first order
Loading...
Katabasis (Deluxe Limited Edition): A Novel
Best Seller

Katabasis (Deluxe Limited Edition): A Novel

(133)
$32.41
FREE delivery Sun, Sep 7 on your first order
Loading...
Just Dance 2025 Limited Edition (Code in Box) - Nintendo Switch

Just Dance 2025 Limited Edition (Code in Box) - Nintendo Switch

(217)
$36.05
PrimeFREE delivery Sat, Jun 14
Loading...
Logitech M185 Wireless Mouse, 2.4GHz with USB Mini Receiver, 12-Month Battery Life, 1000 DPI Optical Tracking, Ambidextrous, Compatible with PC, Mac, Laptop - Black

Logitech M185 Wireless Mouse, 2.4GHz with USB Mini Receiver, 12-Month Battery Life, 1000 DPI Optical Tracking, Ambidextrous, Compatible with PC, Mac, Laptop - Black

(43,809)
$14.99$11.99
FREE delivery Mon, Sep 22 on your first order
1K+ bought in past month
Loading...
Logitech G305 LIGHTSPEED Wireless Gaming Mouse, Hero 12K Sensor, 12,000 DPI, Lightweight, 6 Programmable Buttons, 250h Battery Life, On-Board Memory, PC/Mac - Black

Logitech G305 LIGHTSPEED Wireless Gaming Mouse, Hero 12K Sensor, 12,000 DPI, Lightweight, 6 Programmable Buttons, 250h Battery Life, On-Board Memory, PC/Mac - Black

(21,223)
$44.98
FREE delivery Tue, Oct 14
1K+ bought in past month
Loading...
Logitech K400 Plus Wireless Touch TV Keyboard With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black
Best Seller

Logitech K400 Plus Wireless Touch TV Keyboard With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black

(38,516)
$39.98$35.98
FREE delivery Thu, Sep 4
500+ bought in past month
Loading...
Logitech G203 Wired Gaming Mouse, 8,000 DPI, Rainbow Optical Effect LIGHTSYNC RGB, 6 Programmable Buttons, On-Board Memory, Screen Mapping, PC/Mac Computer and Laptop Compatible - Black
Best Seller

Logitech G203 Wired Gaming Mouse, 8,000 DPI, Rainbow Optical Effect LIGHTSYNC RGB, 6 Programmable Buttons, On-Board Memory, Screen Mapping, PC/Mac Computer and Laptop Compatible - Black

(17,871)
$27.98$22.38
FREE delivery Tue, Oct 14 on your first order
500+ bought in past month
Loading...
Dell UltraSharp U2723QE 27" 4K UHD WLED LCD Monitor - 16:9 - Black, Silver EPEAT

Dell UltraSharp U2723QE 27" 4K UHD WLED LCD Monitor - 16:9 - Black, Silver EPEAT

(13)
$699.99$650.99
FREE delivery Tue, Oct 7
50+ bought in past month
Loading...
Dell UltraSharp 24 Monitor - U2424H

Dell UltraSharp 24 Monitor - U2424H

(43)
$309.44$262.14
FREE delivery Aug 22 - 25Only 8 left in stock.
Loading...
Dell UltraSharp U2725QE 27' 4K Thunderbolt-Hub-Monitor mit Bildwiederholfrequenz Von 120Hz

Dell UltraSharp U2725QE 27' 4K Thunderbolt-Hub-Monitor mit Bildwiederholfrequenz Von 120Hz

(50)
$1,059.91
FREE delivery Oct 7 - 8
Loading...
SUPWEE 3D Nail Sculpting Gel Solid Builder Gel for Nails Art, Non-Sticky Hand Hard Gels for Extension Moding Carving DIY at Home 14g(0.49fl oz)

SUPWEE 3D Nail Sculpting Gel Solid Builder Gel for Nails Art, Non-Sticky Hand Hard Gels for Extension Moding Carving DIY at Home 14g(0.49fl oz)

(765)
$11.39
200+ bought in past month
Loading...
GIGABYTE - AORUS Elite 16 Gaming Laptop - 165Hz 2560x1600 WQXGA - NVIDIA GeForce RTX 5070 - Intel Core Ultra 9 275HX - 1TB SSD with 32GB DDR5 RAM - Windows 11 Home AD (AORUS Elite 16 BWHC3USC64SH)

GIGABYTE - AORUS Elite 16 Gaming Laptop - 165Hz 2560x1600 WQXGA - NVIDIA GeForce RTX 5070 - Intel Core Ultra 9 275HX - 1TB SSD with 32GB DDR5 RAM - Windows 11 Home AD (AORUS Elite 16 BWHC3USC64SH)

(0)
$9,050.69
FREE delivery Aug 28 - Sep 8Only 3 left in stock.
Loading...
KOORUI 24 Inch IPS Gaming Monitor, FHD 1920×1080p, 165Hz 200Hz Monitors, 1ms with Adaptive Sync, DCI-P3 90% Color Gamut, HDR400, 2 x HDMI 2.0, DisplayPort 1.4, Tilt Adjustable, G2411P

KOORUI 24 Inch IPS Gaming Monitor, FHD 1920×1080p, 165Hz 200Hz Monitors, 1ms with Adaptive Sync, DCI-P3 90% Color Gamut, HDR400, 2 x HDMI 2.0, DisplayPort 1.4, Tilt Adjustable, G2411P

(4,083)
$139.99$126.47
FREE delivery Tue, Aug 12
400+ bought in past month
Loading...
KOORUI 34-inch Ultrawide Curved WQHD 3440×1440 Gaming Monitor, 165Hz 144Hz Curved 1000R- PIP/PBP, 1ms(MPRT) with DisplayHDR 400, DCI-P3 90% Color Gamut, AdaptiveSync, HDMI/DisplayPort, 34E6UC

KOORUI 34-inch Ultrawide Curved WQHD 3440×1440 Gaming Monitor, 165Hz 144Hz Curved 1000R- PIP/PBP, 1ms(MPRT) with DisplayHDR 400, DCI-P3 90% Color Gamut, AdaptiveSync, HDMI/DisplayPort, 34E6UC

(3,528)
$349.99
FREE delivery Sun, Aug 10
100+ bought in past month
Loading...
10.1 Inch Touch Portable Monitor IPS Screen 1366x768P 60Hz 400 Brightness 99% sRGB HDMI USB-C Monitors Switch for Xbox PS3/4/5 Laptop Compatible with Raspberry Pi, Mini Touch Screen

10.1 Inch Touch Portable Monitor IPS Screen 1366x768P 60Hz 400 Brightness 99% sRGB HDMI USB-C Monitors Switch for Xbox PS3/4/5 Laptop Compatible with Raspberry Pi, Mini Touch Screen

(1)
$99.99
FREE delivery Mon, Aug 11
Loading...
ELECROW 8 Inch Portable Monitor, 1280x800 Mini HD Display with Built-in Speakers, USB Powered, Non-Touch LCD Screen for Raspberry Pi, PC, Laptop, Jetson Nano, Game Consoles

ELECROW 8 Inch Portable Monitor, 1280x800 Mini HD Display with Built-in Speakers, USB Powered, Non-Touch LCD Screen for Raspberry Pi, PC, Laptop, Jetson Nano, Game Consoles

(49)
$117.29$102.21
$6.86 delivery Thu, Aug 14
Loading...
7 Inch Portable Monitor Touchscreen HD 1024x600 LED Display Dual HDMI Port Small Monitor for PC Raspberry Pi Laptop Computer Xbox PS4/5 Switch Built-in Speakers

7 Inch Portable Monitor Touchscreen HD 1024x600 LED Display Dual HDMI Port Small Monitor for PC Raspberry Pi Laptop Computer Xbox PS4/5 Switch Built-in Speakers

(61)
$68.99
FREE delivery Tue, Aug 12
Loading...
BrosTrend 1800Mbps WiFi 6 Linux WiFi Adapter for PC and Raspberry Pi 2+, Long Range USB WiFi Dongle Linux for Ubuntu, Mint, Debian, Kubuntu, Lubuntu, Zorin, Windows 11/10, Dual Band Wireless Antenna

BrosTrend 1800Mbps WiFi 6 Linux WiFi Adapter for PC and Raspberry Pi 2+, Long Range USB WiFi Dongle Linux for Ubuntu, Mint, Debian, Kubuntu, Lubuntu, Zorin, Windows 11/10, Dual Band Wireless Antenna

(288)
$54.14
FREE delivery Sun, Jun 22
Loading...
The Witcher 3: Wild Hunt Complete Edition (PS5)

The Witcher 3: Wild Hunt Complete Edition (PS5)

(977)
$34.29
$3.95 delivery Jul 2 - 23
Loading...
folklore ("in the trees" edition / 2LP)
Best Seller

folklore ("in the trees" edition / 2LP)

(18,893)
$30.99$18.30
$9.99 delivery Jul 8 - 10
50+ bought in past month
Loading...
The Woman in the Yard - Collector's Edition [DVD] (Bilingual)

The Woman in the Yard - Collector's Edition [DVD] (Bilingual)

(22)
$21.99$11.99
FREE delivery Sat, Jun 14 on your first order
Loading...
Sex and the Developing Brain: Second Edition

Sex and the Developing Brain: Second Edition

(0)
$13.07
FREE delivery Tue, Jun 17 on your first order