Weekly Recap – July 6th, 2025

Spring Boot, Java, TypeScript, and some Kotlin

The Substack exclusives this week focused on practical patterns and background task support. Things started with a Java post that walks through reversing words or sentences based on user input. After that, I covered scheduled file cleanup in Spring Boot, how to handle case-insensitive searches with JPA, and wrapped up with a TypeScript article that breaks down when never actually makes sense.

On Medium, I kept up my usual with Java, Spring Boot, TypeScript, and Kotlin. Java posts focused on scanner input, string joining, control flow, and real-world patterns like guessing games and expiration logic. Spring Boot got plenty of time too, covering things like Flyway migrations, scheduled jobs, background task tracking, and handling user sessions during restarts. TypeScript and Kotlin both had posts going into how type behavior works at compile time, and where things shift depending on usage.

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Substack Exclusive

When to Use never in TypeScript

Handling Case Insensitive Searches with Spring Boot and JPA

Cleaning Up Old Files with Scheduled Tasks in Spring Boot

Reversing a Word or Sentence Using Java Code

Medium Articles

Java Topics

• How To Pause a Java Program for a Few Seconds Safely and Correctly

• Reading a Full Line of Input Using Scanner in Java

• How to Check If a Number Is Even or Odd in Java

• Joining Multiple Strings in Java Without a Loop

• Making a Number Guessing Game with Java Logic

Spring Boot Topics

• Serving Public JSON Feeds with Spring Boot APIs

• Parsing User Defined Cron Expressions in Spring Boot Schedulers

• Storing and Displaying User Avatars in Spring Boot Apps

• Building a Time-Based Expiration System in Spring Boot with Scheduled Cleanup

• Using Spring Boot with Flyway to Manage Database Migrations

• Handling Spring Boot Restarts Without Losing User Sessions

• Tracking Background Job Status with Spring Boot and a Database Table

TypeScript Topics

• TypeScript Type Imports vs Regular Imports

• Writing TypeScript Without Declaring Any Types

• TypeScript Type Guards That Actually Matter

• What TypeScript Does with Module Resolution

• Where Null and Undefined Are Watched in TypeScript

• What TypeScript’s Type Narrowing Actually Changes During Compilation

• When TypeScript’s Type Assertions Work and When They Just Silence the Compiler

Kotlin Topics

• How Kotlin Handles Function Overloading at Compile Time

• What Kotlin Does with Try Blocks That Return Values

Next week’s Medium posts are already scheduled, and they’re spread across Spring Boot, Java, and TypeScript. For Substack, I’m leaning toward picking back up where I left off with some SQL work, adding a few more LeetCode problems, and filling out the rest with whatever Java or TypeScript ideas land first.