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🧵 Java Interview Experience Recently went through a series of interviews for senior Java positions and documented one of the interview experience at EPAM. The discussions were heavily centered around applying core concepts in real scenarios — especially Java 8, concurrency, and microservices architecture — rather than surface-level knowledge. #Java #SystemDesign #Microservices #Concurrency #BackendEngineering #InterviewExperience #bitbee

🔹 Java Interview Insight: Reference Types & Garbage Collection One topic that frequently appears in experienced Java developer interviews is understanding how memory is managed in the JVM. In this quick 3-minute video, I discuss the differences between Strong, Weak, Soft, and Phantom references and how they relate to Java garbage collection and memory-sensitive applications. These concepts are important for developers who want a deeper understanding of JVM behavior beyond basic coding. #Java #JavaInterview #JVM #GarbageCollection #BackendDevelopment #JavaDeveloper #SoftwareEngineering #BitBee

🔹 Java 17 Sealed Classes – Interview Perspective (3 mins) 🧵 🧵 I’ve shared a quick discussion on Sealed Classes & Interfaces in Java 17, explained through a practical scenario. The example covers a Payment Gateway API response model, where sealed classes help: • Restrict permitted response types • Enforce fixed response structures as per service agreements • Prevent unintended extensions • Improve domain modeling clarity This is a real-world interview-style question focused on modern Java design decisions, not just syntax. #Java17 #SealedClasses #JavaInterview #BackendDevelopment #SoftwareDesign #BitBee

Java SpringBoot Microservices Real time Interview question asked at GAP, GE, SAP, EY for 5 Years Java developer. 1. Why we use Service registry and Api gateway?? 2. Which load balancer you are using in your project?? 3. How this cloud load balancer actually balances the load?? 4. How did you configure retry in your project?? 5. What is difference between Post/Put/Patch in terms of request comes to our service?? 6. Do not need defination from google?? Want to know how our service handle this requests?? 7. How patch will work in scenario where in my request I have 2 parameters coming like a=1 and b=null, in this case how patch will work?? Here in the object all other parameters will be null, and in db you want to replace a with 1 and b with null, how it will happen?? 8. What kind of db your project is using onPrem or Cloud?? 9. How you are connecting to the database?? 10. How schemas are created in your project, manually or using any scripts?? 11. How you have configured your db in the project??(Added properties in yml file) 12. How after adding properties in yml it connects to db?? How it creates configuration or beans internally?? 13. How to tell Springboot not to do auto configuration using properties from yml, and want to use JPA only but want to do it manually. 14. What is difference between Driver and Dialect?? 15. Which java Version you are using?? 16. what features you have used in your project of java 11 or java 8 17. What methods you have used in project of Optional class?? 18. which method will you use Optional.of or Optional.OfNullable?? 19. What is difference between Map and FlatMap in Optional class?? 20. what is difference between map and flatmap in Stream?? 21. How we can call multiple other apis/services simultaneously from your service?? 22. How do you aggregate those data coming from different services?? 23. What patterns you have used in your project for Microservices?? 24. Which gateway you are using??type 25. Which registry service you are using? 26. What is Kafka 27. Why you are using Kafka in your project(why not other queues) ?? And where you are using it?? 28. What serializer you are using for kafka 29. Why you are using key?? What is the significance of key in kafka?? 30. How is it exactly storing key or getting data using key?? we have 50 more questions to answer.. 📺 Explore all at bitbee Youtube and dn’t forget to subscribe 🔔🔔 and share with your friends, if you find the solutions useful. Playlist 🔗: youtube.com/playlist?list=PL… #java #develeoper #interviewquestions #bitbee #softwareengineering #openings

🎥 Exploring Concurrency in Java — Visually Explained! 🧠 Ever wondered how Java handles multiple tasks behind the scenes? 💻 Single vs Multi-Core Processors → How CPUs handle multiple threads — either by switching fast or running truly in parallel. 🧵 Java Thread Scheduler → The brain behind deciding which thread runs when. ⚙️ Real Demo → A simple Java program showing multiple threads running in random order every time — proving concurrency in action! 👉 Here’s what we uncover in Episode 2 of our Visualized Java Multithreading Series 📺👇 🔗 youtu.be/wJqQtPDEiCo #Java #Multithreading #Concurrency #Parallelism #JavaDeveloper #JavaThreads #JavaLearning #BitBee #JavaCommunity

🚀 OpenAI DevDay 2025 just changed the AI landscape. From GPT-5 Pro and Sora 2 video generation to the ChatGPT App Store and AgentKit for developers, OpenAI isn’t just releasing models — it’s building an operating system for AI. Here’s what OpenAI officially unveiled: 1. ChatGPT App Store & SDK – Build mini-apps that live inside ChatGPT. 2. AgentKit for Developers – Toolkit to create, deploy, and monitor AI agents. 3. GPT-5 Pro in the API – Enterprise-grade model with stronger reasoning and reliability. 4. Sora 2 Video Generation API – High-fidelity text-to-video available to developers. 5. Codex Refresh (GPT-5 Codex) – Smarter autonomous coding, code-review, and collaboration tools. 6. gpt-realtime-mini – Lightweight model for live voice and streaming interactions. 7. gpt-image-1-mini – Faster, cheaper image generation model. 8. AMD Partnership – OpenAI teams up with AMD to diversify GPU supply and scale compute capacity. In my latest Medium article, I’ve broken down every major announcement — what’s new, why it matters, and how developers can adapt right now. 🔗 Read here 👇: medium.com/bitbee/openai-dev… #OpenAI #GPT5 #Sora2 #ChatGPT #AI #AIAgents #DeveloperTools #FutureOfWork #AIDevelopment #Bitbee

💡 Still writing old-style Java? You might be missing out on records, pattern matching, virtual threads, and other game-changing features in Java 25. I’ve broken it all down with before vs after code examples — practical upgrades every developer should know. 🔗 medium.com/bitbee/still-writ… 👉 Follow Bitbee YouTube for more Java interview prep & real-world coding content. #Java #Java25 #ModernJava #JavaDevelopment #CodingInterviews #Bitbee

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Code Vs No-Code AI Builders? Both are awesome technologies, it depends on: • What you’re building and how fast you need to ship. • Whether you and your team prefer a coding environment, a visual interface, or a hybrid of both. Shoutout to @KarlMyrvang for building bitbee.

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🎙️ Audio In. 📊 Structured Data Out. @KarlMyrvang built bitbee, a spreadsheet-inspired AI tool that transcribes raw audio into structured data. #BuiltWithWeWeb Take a look at his demo:

🚀 Java 24 is here! 🚀 The latest Java release brings performance boosts, enhanced security, and powerful new features like pattern matching for primitives, optimized virtual threads, Vector API for AI/ML, and Project Leyden for faster startup times. I’ve broken down all the major updates with hands-on examples in my latest Medium article. Check it out to stay ahead in the Java ecosystem! 👉 Read the full article here 🔗 medium.com/bitbee/java-24-a-… Drop your thoughts in the comments! Are you excited about Java 24? #Java24 #JavaDevelopers #SpringBoot #SoftwareEngineering #Microservices #Bitbee

🚀 Java 24 is here! 🚀 The latest Java release brings performance boosts, enhanced security, and powerful new features like pattern matching for primitives, optimized virtual threads, Vector API for AI/ML, and Project Leyden for faster startup times. I’ve broken down all the major updates with hands-on examples in my latest Medium article. Check it out to stay ahead in the Java ecosystem! 👉 Read the full article here 🔗 medium.com/bitbee/java-24-a-… Drop your thoughts in the comments! Are you excited about Java 24? #Java24 #JavaDevelopers #SpringBoot #SoftwareEngineering #Microservices #Bitbee

🚀 Java 24 is here! 🚀 The latest Java release brings performance boosts, enhanced security, and powerful new features like pattern matching for primitives, optimized virtual threads, Vector API for AI/ML, and Project Leyden for faster startup times. I’ve broken down all the major updates with hands-on examples in my latest Medium article. Check it out to stay ahead in the Java ecosystem! 👉 Read the full article here 🔗 medium.com/bitbee/java-24-a-… Drop your thoughts in the comments! Are you excited about Java 24? #Java24 #JavaDevelopers #SpringBoot #SoftwareEngineering #Microservices #Bitbee