Weekly Recap – June 8th, 2025

Java, Spring Boot, JavaScript, Kotlin, and LeetCode

It was a busy week on my side, but I still got a solid batch out. Java covered loops, methods, sorting, and switch statements. Spring Boot focused on email queues, health checks, and connecting to services. I added a few JavaScript exclusives here on Substack, along with some new LeetCode solutions. Kotlin touched on type inference and sealed classes, and JavaScript dug into how some of its core features behave.

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Substack Exclusive

Working with JavaScript's PerformanceObserver to Track Web Vitals

How JavaScript String.raw Lets You Handle Escape Sequences Directly

LeetCode #11: Container With Most Water — Solved in Java

LeetCode #10: Regular Expression Matching — Solved in Java

LeetCode #9: Palindrome Number — Solved in Java

Medium Articles

Java Topics and JVM Mechanics

• Building a Countdown Timer in Java Using Loops for Beginners

• Creating and Using Java Methods to Reuse Code

• Sorting Lists in Java Using Collections.sort

• Building a Basic Calculator with Switch Statements for Beginners in Java

Spring Boot Topics

• Triggering Webhooks from a Spring Boot Application

• Adding Health Checks to Spring Boot with Custom Indicators

• Making a Simple Email Queue with Spring Boot and RabbitMQ

• Writing Custom Jackson Serializers in Spring Boot

• Connecting Spring Boot Projects to MySQL Using SSL Securely

• Handling Form Submissions with Spring Boot Using Thymeleaf

• Using Spring Boot With MinIO for S3 Compatible Storage

JavaScript Internals

• Timing Animation Loops with requestAnimationFrame in JavaScript

• How Private Getters and Setters Improve JavaScript Class Security

• Getting Accurate Time with JavaScript Performance.now

• How to Use JavaScript Object.hasOwn for Cleaner Checks

• The Real Reason JavaScript typeof Null Returns Object

• What Happens in JavaScript When You Reassign an Imported Binding

• Native Stream Handling with JavaScript Web Streams API

Kotlin Topics

• What Kotlin’s Type Inference Does Behind the Scenes

• Why Sealed Classes Work So Well for Exhaustive Checks in Kotlin

• How Kotlin Inlines Higher Order Functions To Avoid Heap Allocations

I’ve got more Java method breakdowns and Spring Boot guides lined up this week, along with a few JavaScript and Kotlin articles in progress, so the usual mix will continue on Medium. Here on Substack, I’m hoping to branch into one or two new areas while still keeping the regular posts going. If things stay on track, there should be a bit more variety by the end of the week.