Welcome to my site! Explore my projects and blogs on Java, Angular, Spring Boot, DevOps, Cybersecurity, and web development.https://choln.dev/https://choln.dev/projects/25-personal-software/https://choln.dev/projects/25-personal-software/I used Claude Code to make a remittance insights dashboard with ElectronSun, 22 Feb 2026 00:00:00 GMThttps://choln.dev/projects/24-why-is-making-software-fun-now/https://choln.dev/projects/24-why-is-making-software-fun-now/Agentic coding tools made writing code fun again, but why?Sun, 18 Jan 2026 00:00:00 GMThttps://choln.dev/projects/project-4/https://choln.dev/projects/project-4/A Spring Boot & Angular project built using Claude Code, showcasing an innovative real-time chat applicationSat, 17 Jan 2026 00:00:00 GMThttps://choln.dev/projects/23-writing-code-is-no-longer-the-limit/https://choln.dev/projects/23-writing-code-is-no-longer-the-limit/What does the future of code look like?Wed, 14 Jan 2026 00:00:00 GMThttps://choln.dev/projects/22-when-to-use-instant-date-type-in-java/https://choln.dev/projects/22-when-to-use-instant-date-type-in-java/Using Instant to represent event time across timezonesMon, 29 Dec 2025 00:00:00 GMThttps://choln.dev/projects/project-3/https://choln.dev/projects/project-3/A C, C++, Java, Rust and Go playgroundSun, 28 Dec 2025 00:00:00 GMThttps://choln.dev/projects/21-notjs-java-hello-world/https://choln.dev/projects/21-notjs-java-hello-world/Demonstrating NotJSSat, 27 Dec 2025 00:00:00 GMThttps://choln.dev/projects/20-moving-my-site-to-chol-dot-dev/https://choln.dev/projects/20-moving-my-site-to-chol-dot-dev/My experience moving my personal site to a new domain chol.devWed, 17 Dec 2025 00:00:00 GMThttps://choln.dev/projects/19-yes-i-use-mint-by-the-way/https://choln.dev/projects/19-yes-i-use-mint-by-the-way/My linux, hacking and coding journeyThu, 11 Dec 2025 00:00:00 GMThttps://choln.dev/projects/18-basic-integration-and-unit-testing-in-spring-boot/https://choln.dev/projects/18-basic-integration-and-unit-testing-in-spring-boot/In this short article I demonstrate how to test your services and controllers in Spring Boot using JUnit and Mockito.Wed, 10 Dec 2025 00:00:00 GMThttps://choln.dev/projects/17-polymorphism-proved-useful/https://choln.dev/projects/17-polymorphism-proved-useful/I ran into an issue where I saw the power of polymorphism in actionFri, 17 Oct 2025 00:00:00 GMThttps://choln.dev/projects/16-java-is-now-terse/https://choln.dev/projects/16-java-is-now-terse/It's now easier to write your first Java ProgramFri, 03 Oct 2025 00:00:00 GMThttps://choln.dev/projects/15-you-should-use-two-factor-authentication-with-ssh/https://choln.dev/projects/15-you-should-use-two-factor-authentication-with-ssh/I setup two-factor authentication with SSH and you should tooFri, 15 Aug 2025 00:00:00 GMThttps://choln.dev/projects/14-angular-multiple-validators/https://choln.dev/projects/14-angular-multiple-validators/Validate a field if its one or the other but not bothMon, 28 Jul 2025 00:00:00 GMThttps://choln.dev/projects/13-compose-with-ai/https://choln.dev/projects/13-compose-with-ai/Compose with AI instead, not generating large solutionsFri, 25 Jul 2025 00:00:00 GMThttps://choln.dev/projects/12-what-is-devops/https://choln.dev/projects/12-what-is-devops/Explaining DevOps for all of usFri, 18 Jul 2025 00:00:00 GMThttps://choln.dev/projects/11-the-power-of-angular-attribute-directives/https://choln.dev/projects/11-the-power-of-angular-attribute-directives/Demonstrating the power Angular attribute directives offerWed, 16 Jul 2025 00:00:00 GMThttps://choln.dev/projects/10-demonstrating-broken-access-control-with-spring-boot/https://choln.dev/projects/10-demonstrating-broken-access-control-with-spring-boot/I'll demonstrate one of the most widespread vulnerabilities with Spring Boot and Spring SecurityMon, 14 Jul 2025 00:00:00 GMThttps://choln.dev/projects/09-locking-your-screen-with-claude-desktop/https://choln.dev/projects/09-locking-your-screen-with-claude-desktop/I created an MCP server to lock my Macbook screen to demo LLM's tools usageMon, 30 Jun 2025 00:00:00 GMThttps://choln.dev/projects/08-css-flexbox/https://choln.dev/projects/08-css-flexbox/Playing with CSS flexboxThu, 10 Apr 2025 00:00:00 GMThttps://choln.dev/projects/07-adding-a-code-playground/https://choln.dev/projects/07-adding-a-code-playground/Adding a code playground using sandpack and reactSun, 30 Mar 2025 00:00:00 GMThttps://choln.dev/projects/06-poor-mans-clipboard-sharing/https://choln.dev/projects/06-poor-mans-clipboard-sharing/Copy text from one machine to another using `nc` and `pbcopy` and `pbpaste` commands.Sat, 29 Mar 2025 00:00:00 GMThttps://choln.dev/projects/05-chatgpt-memories-privacy-concern/https://choln.dev/projects/05-chatgpt-memories-privacy-concern/ChatGPT referenced a previous chat we had.Mon, 24 Feb 2025 00:00:00 GMThttps://choln.dev/projects/04-a-git-cherry-picking-scenario/https://choln.dev/projects/04-a-git-cherry-picking-scenario/I ran into a situation at work where I needed to cherry pick commitsTue, 18 Feb 2025 00:00:00 GMThttps://choln.dev/projects/02-spring-ai-semantic-search-with-pgvector/https://choln.dev/projects/02-spring-ai-semantic-search-with-pgvector/Demonstrating semantic search with Spring AI using pgVector.Sun, 12 Jan 2025 00:00:00 GMThttps://choln.dev/projects/project-2/https://choln.dev/projects/project-2/A fun project I made to develop a 2D multiplayer gameFri, 13 Dec 2024 00:00:00 GMThttps://choln.dev/projects/01-write-a-java-program-as-shellscript/https://choln.dev/projects/01-write-a-java-program-as-shellscript/Java's aim recently is to be more beginner friendly, but this also makes it possible to write shorter programs such as scriptsWed, 06 Nov 2024 00:00:00 GMThttps://choln.dev/projects/03-where-ai-sometimes-shines/https://choln.dev/projects/03-where-ai-sometimes-shines/AI coming to the rescue when using poorly documented libraries.Sat, 19 Oct 2024 00:00:00 GMThttps://choln.dev/projects/project-1/https://choln.dev/projects/project-1/An Angular and Spring Boot App powered by Spring AISun, 08 Sep 2024 00:00:00 GMT