#java and web application developer || We design and develop experiences that make people's lives simply awesome! #ProgrammingIsFun
Joined November 2020
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Introducing the brand new YouTube channel that will take you through the language that is Java
John K. Macharia youtube.com/@john_the_progra… via @YouTube
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#100DaysOfCode #Education #Java #ProgrammingIsFun
Day 7
Today I learnt about the Laravel Request Lifecycle which is the journey an incoming HTTP request takes from the moment it hits your web server until a response is delivered back to the client's browser.
#100DaysOfLaravel #Laravel #WebsiteDevelopment
Day 6
Today I built my very first page, and the route that opens it. I just dumped plain html into the script, but blade templating engine will come in handy a little later on.
#100DaysOfLaravel #Laravel #WebDev #SoftwareEngineering
Day 5
Today I learnt about command line tools (php artisan....). In the project directory, there is a file called artisan which does not have an extension. But it is actually a php file
#100DaysOfLaravel #laravel #SoftwareDevelopment #WebDevelopment
Day 4 Learnt git fundamentals (init, add, commit) and pushed my first project to GitHub. Task manager is now live on @github (github.com/SentinelleTech/ta…)
#100DaysOfCode #Laravel
Day 2 & 3 of #Laravel: built a full CRUD task manager from scratch — migrations, models, controllers, routes, Blade views. Hit two real bugs (typo in timestamps(), missing view files) and debugged both from the error output. Full MVC flow finally clicked. 😰 #100DaysOfLaravel
The first lesson is always installation and configuration when learning a new technology. Today is day 1 of my @Laravel development journey.
#100DaysOfLaravel
Bubble sort algorithm in java, watch it here: youtu.be/gLsMqjG4ab8?si=4hny…
#programmingisfun #java #softwareengineering #100daysofcode
A great lesson I have prepared on Bubble Sort algorithm in @java
Watch the full video on @YouTube using this link: youtu.be/gLsMqjG4ab8?si=cnKG…
#dsa #programming #softwareengineer
Do you want to understand Constructors and Encapsulation in #java
Then this video is for you. Watch it on @youtube using this link: youtu.be/pg2QDk0jBWwWatch
Remember to subscribe, like and leave a comment. #javatutorial #programmingisfun #100daysofcode
Object Oriented Programming explains why we write java code the way we do. To learn two of the concepts of java OOP, watch this video on @YouTube
using this link: youtu.be/pg2QDk0jBWwWatch, subscribe, like and leave a comment. #JavaTutorial #ProgrammingIsFun #100DaysOfCode
We learn java OOP concepts of Encapsulation and Constructors in this video. Find the full video on @YouTube using this link: youtu.be/pg2QDk0jBWw
Watch, subscribe, like and leave a comment.
#JavaTutorial #ProgrammingIsFun #100DaysOfCode
I coded Instagram's username validator using Java - using only methods. Watch it on @youtube using this link: youtu.be/2p7RXm5l2P8
#100DaysOfCode #ProgrammingIsFun #YouTube配信
Java 2D Array - Movie Theater youtu.be/o5pQYNBTuRA?si=NZde… via @YouTube
Click on the link and watch how 2 dimensional java arrays work
#Java #YouTuber
What is an immutable class in Java?
An immutable class is a class whose instances, once created, cannot have their internal state modified.
#Java #ProgrammingIsFun #SoftwareEngineer
"I just need users to go to different pages after login."
Famous last words.
3 days of Laravel role-based authentication later:
- Middleware not registering
- auth() ->user() has no 'isAdmin()' method
- 403 errors everywhere
#Laravel #WebDev #CodingProblems
Java 2D Array Concept EXPLAINED youtu.be/Br9GXJmsH_A?si=46cb… via @YouTube
#ProgrammingIsFun #JavaWithJohn #Java
Java developers: Stop using null checks everywhere.
Instead of this:
if (user != null && user.getName() != null) {
return user.getName();
}
return "Unknown";
Use:
return Optional.ofNullable(user)
.map(User::getName)
.orElse("Unknown");
#Java #javadev #CodingTips
Bonus: Optional also works great for method returns
Instead of returning null and forcing callers to check:
public User findUserById(Long id) {
// returns null if not found ❌
}