Alexander Obregon

Software Engineer, passionate about programming, writes about code to deepen understanding. Committed to staying up-to-date, helping others improve.

[Alexander Obregon @AlexCodes47]

Spring Boot 4.0 is here! If you’re curious about what changed, I made a breakdown: https://t.co/hRTE9JkBxR #SpringBoot #Java #Backend #Programming

[Alexander Obregon @AlexCodes47]

I just posted about blocking brute-force logins in Spring Boot with short-term tracking and filters. Works with IPs, Redis, and plays well with modern config. #SpringBoot #JavaDev #APISecurity #Java #Programming https://t.co/qKEkynJcNy

[Alexander Obregon @AlexCodes47]

Here's my latest article on how Java handles object casting during execution, Check it out!
https://t.co/AYkYeS33Mr
#Java #JVM #JavaDevelopment #JavaTips #Coding #SoftwareEngineering #Bytecode #Programming #LearnToCode

[Alexander Obregon @AlexCodes47]

I put together a quick walkthrough of how JavaScript keeps track of what is running using execution contexts and the call stack. Check it out: https://t.co/mwBBc9bEfD #Javascript #Coding #WebDevelopment #WebDev #Programming #LearnToCode

[Alexander Obregon @AlexCodes47]

Part 2 of my Java scope series is up! This one covers how methods, fields, and "this" really work. https://t.co/Xs8mB0wa4W #Java #LearnJava #LearnToCode #Coding #Programming #SoftwareDevelopment

[Alexander Obregon @AlexCodes47]

Wrote something on how Java handles scope inside methods, blocks, braces, and the stuff that can trip you up early on. It’s up on my new Substack: https://t.co/txKmqn5xaV #Java #LearnToCode #Coding #Programming #SoftwareDevelopment

[Alexander Obregon @AlexCodes47]

Wrote a article on how JavaScript handles hoisting, and why some things work before they’re even defined. https://t.co/1tAjMEV5XJ #JavaScript #Coding #WebDevelopment #Programming #LearnToCode

[Alexander Obregon @AlexCodes47]

Just wrote a quick breakdown on how JavaScript finds properties using the prototype chain. Some behind-the-scenes stuff that’s easy to miss. #JavaScript #WebDevelopment #Coding #LearnToCode https://t.co/wORw3nbcNw

[Alexander Obregon @AlexCodes47]

I recently wrote about solving Capitalize the Title on LeetCode with four Java solutions—step-by-step breakdowns and complexity analysis. Check it out! #Java #LeetCode #Coding #Programming #SoftwareEngineering #LearnToCode https://t.co/L6Nd4EzhwG

[Alexander Obregon @AlexCodes47]

Improve your Java skills with my article on multi-dimensional arrays "Understanding Multi-Dimensional Arrays in Java" https://t.co/rRkZQLCn5k #programming #coding #LearnToCode #Java #Developers

[Alexander Obregon @AlexCodes47]

Explore #Multithreading in C++! Check out my latest article for a guide on std::thread, synchronization tools, and best practices for thread-safe programming. #CPP #cplusplus #Concurrency #programming https://t.co/POjjJQLFBp

[Alexander Obregon @AlexCodes47]

Improve your app's security with my latest guide on two-factor authentication methods in Spring Boot! Compare SMS, email, and more to find the best fit for your project. 🚀

https://t.co/eAoHIXuCNm

#SpringBoot #Security #2fa #2factorauthetification #TechGuide #Java

[Alexander Obregon @AlexCodes47]

Improve your Spring Boot app's security! Explore how to implement TOTP-based 2FA using the java-otp library. Learn step-by-step from setup to user authentication and secure your application now. 🚀
https://t.co/1YvhErEFjS #springboot #security #Java

[Alexander Obregon @AlexCodes47]

@QANewsletter @sensei_bas @TChenska @alanpage @adenhuen @razvanvancea @MIndfulTester @hugs @Nikolay_A00 @dnlkntt @mablhq Awesome!

[Software Testing Weekly 🚀 @QANewsletter]

Hey! 🙂

The 218th issue is out!
https://t.co/Xd6BBNCGkM

Congrats @Sensei_Bas, @TChenska, @alanpage, @adenhuen, @AlexCodes47, @RazvanVancea, @mindfultester, @hugs, @Nikolay_A00 and @dnlkntt!

#SoftwareTesting #QA

[Alexander Obregon @AlexCodes47]

Looking to refine your application's logging in Spring Boot? Take a look at my latest article on improving logging with Logback, from basic setups to advanced configurations. #springboot #Logback #Java #devops #Java https://t.co/Pq9Ok8uJZL

[Alexander Obregon @AlexCodes47]

Check out my article: Java for Beginners-Understanding Break and Continue Statements!✨ https://t.co/JwsDooXuV6 #Coding #programming #Java

[Alexander Obregon @AlexCodes47]

Take a look at my latest article 'Beginner’s Guide to Java Constructors'. Whether you're new to Java or brushing up on basics, this guide has something for you https://t.co/VAAJ78XKUi #Java #programming #LearnToCode

[Alexander Obregon @AlexCodes47]

Take a look at my new guide 'Beginner’s Guide to Java Output/Print' - a straightforward, example-packed introduction for those new to Java or programming. Perfect for anyone looking to understand the basics of Java output methods! https://t.co/GLSccheIgh #Java #LearnToCode

[Alexander Obregon @AlexCodes47]

Check out my latest article: 'Beginner’s Guide to Java Syntax' - a simple, straightforward journey into the world of #Java programming for beginners! https://t.co/xO93kyeQiz #coding #programming #LearnToCode