MJ's Codeverse

@UCmgUvD19WfKoZ_gWYof2lmQ - 2.3K subscribers

🚀 Welcome to CodeVerse! This channel is dedicated to Java Backend Development, Spring Boot, Microservices, and Java Interview Preparation for developers who want to build strong backend engineering skills. Whether you’re a beginner, fresher, or experienced developer, you’ll find practical tutorials, real-world backend concepts, and interview-focused explanations to help you grow in your software development career. 💻 What You’ll Learn on This Channel ✅ Core Java & Advanced Java Concepts ✅ Multithreading & Java Collections ✅ Spring Boot & Microservices Architecture ✅ REST API Development ✅ SQL & NoSQL Databases ✅ Backend System Design ✅ Most Asked Java Interview Questions Subscribe and join the journey to master Java Backend Development with CodeVerse! 🚀💻🔥 📩 Business / Sponsorship / Collaboration For partnerships, promotions, or collaborations: [email protected]

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System Design Crash Course: Crack Any Interview in 2 Hours!

System Design Crash Course: Crack Any Interview in 2 Hours! MJ's Codeverse

237 views - 1 day ago

Automated Background Verification with AI 😳 (Spring Boot + Claude MCP)

Automated Background Verification with AI 😳 (Spring Boot + Claude MCP) MJ's Codeverse

228 views - 1 week ago

Connect Claude to Spring Boot in 3 Steps! (MCP Tutorial)

Connect Claude to Spring Boot in 3 Steps! (MCP Tutorial) MJ's Codeverse

295 views - 2 weeks ago

Spring Boot JWT Security Using AI (@Claude + @IntelliJ IDEA, a JetBrains IDE) — Zero Boilerplate!

Spring Boot JWT Security Using AI (@Claude + @IntelliJ IDEA, a JetBrains IDE) — Zero Boilerplate! MJ's Codeverse

305 views - 3 weeks ago

Java Interview Questions and Answers: Live Company Scenarios (2026)

Java Interview Questions and Answers: Live Company Scenarios (2026) MJ's Codeverse

1.4K views - 4 weeks ago

Don't Overthink LeetCode 122! (Best Time to Buy & Sell Stock II)

Don't Overthink LeetCode 122! (Best Time to Buy & Sell Stock II) MJ's Codeverse

85 views - 1 month ago

Best Time to Buy and Sell Stock - LeetCode 121 - Java (Full Dry Run)

Best Time to Buy and Sell Stock - LeetCode 121 - Java (Full Dry Run) MJ's Codeverse

148 views - 1 month ago

Java Coding Interview Mastery: Zero to Job-Ready (5 Hours)

Java Coding Interview Mastery: Zero to Job-Ready (5 Hours) MJ's Codeverse

3.5K views - 1 month ago

Spring Boot Zero to Hero: Build a Complete CRUD App in 2 Hours!

Spring Boot Zero to Hero: Build a Complete CRUD App in 2 Hours! MJ's Codeverse

537 views - 1 month ago

Google's Favorite Question: Top K Frequent Elements (Java Streams)

Google's Favorite Question: Top K Frequent Elements (Java Streams) MJ's Codeverse

282 views - 1 month ago

Move All Zeros to End of Array | LeetCode 283 | Java DSA Course

Move All Zeros to End of Array | LeetCode 283 | Java DSA Course MJ's Codeverse

150 views - 1 month ago

Rate Limiter: System Design Interview Question (2026 Guide)

Rate Limiter: System Design Interview Question (2026 Guide) MJ's Codeverse

373 views - 1 month ago

Java Interview Questions & Answers: Zero to Job-Ready (10 Hours)

Java Interview Questions & Answers: Zero to Job-Ready (10 Hours) MJ's Codeverse

9K views - 2 months ago

Microservices Design Patterns: The ONLY Cheat Sheet You Need for Java Interviews (2026)

Microservices Design Patterns: The ONLY Cheat Sheet You Need for Java Interviews (2026) MJ's Codeverse

902 views - 2 months ago

Real Java Interview Questions 2026: Java 8, Spring Boot, DSA & System Design

Real Java Interview Questions 2026: Java 8, Spring Boot, DSA & System Design MJ's Codeverse

377 views - 2 months ago

Design a REAL Payment System like PayPal (10,000 TPS) | System Design Interview

Design a REAL Payment System like PayPal (10,000 TPS) | System Design Interview MJ's Codeverse

1.7K views - 2 months ago

Real Java Interview Questions 2026: Java 8, Spring Boot, Multithreading & Apache Kafka

Real Java Interview Questions 2026: Java 8, Spring Boot, Multithreading & Apache Kafka MJ's Codeverse

2.8K views - 2 months ago

Spring Boot Interview Trap 😱 @Transactional + Propagation Explained!

Spring Boot Interview Trap 😱 @Transactional + Propagation Explained! MJ's Codeverse

500 views - 3 months ago

Spring Boot Interview Trap 😱 @Transactional + Isolation Levels

Spring Boot Interview Trap 😱 @Transactional + Isolation Levels MJ's Codeverse

586 views - 3 months ago

Java Interview Questions: Exception Handling Interview Tips 🔥 99% Developers FAIL 😱

Java Interview Questions: Exception Handling Interview Tips 🔥 99% Developers FAIL 😱 MJ's Codeverse

393 views - 3 months ago

Java 26 is HERE 🚀 – 6 Features That Will Change Coding Forever!

Java 26 is HERE 🚀 – 6 Features That Will Change Coding Forever! MJ's Codeverse

287 views - 3 months ago

ChatGPT App using Spring Boot & Ollama (Part 2) | Build in 30 Minutes

ChatGPT App using Spring Boot & Ollama (Part 2) | Build in 30 Minutes MJ's Codeverse

184 views - 3 months ago

ChatGPT App using Spring Boot & Ollama (Part 1) | Build in 30 Minutes

ChatGPT App using Spring Boot & Ollama (Part 1) | Build in 30 Minutes MJ's Codeverse

156 views - 3 months ago

Top 40 Spring Boot Annotations 🔥 20 Min Revision Before Interview 😱

Top 40 Spring Boot Annotations 🔥 20 Min Revision Before Interview 😱 MJ's Codeverse

575 views - 4 months ago

Python Dictionary Explained with Examples | Learn Python for Beginners

Python Dictionary Explained with Examples | Learn Python for Beginners MJ's Codeverse

105 views - 4 months ago

Python Tutorial for Beginners | Strings, Lists, Sets & Tuples Explained

Python Tutorial for Beginners | Strings, Lists, Sets & Tuples Explained MJ's Codeverse

101 views - 4 months ago

Python Tutorial for Beginners | Intro to Python with Google Colab

Python Tutorial for Beginners | Intro to Python with Google Colab MJ's Codeverse

70 views - 4 months ago

Real Java Mock Interview for Freshers (0–3 Years) | Core Java, Spring Boot, Microservices & Coding

Real Java Mock Interview for Freshers (0–3 Years) | Core Java, Spring Boot, Microservices & Coding MJ's Codeverse

575 views - 4 months ago

Will AI Replace Jobs? Generative AI vs AI Agents vs Agentic AI Explained

Will AI Replace Jobs? Generative AI vs AI Agents vs Agentic AI Explained MJ's Codeverse

96 views - 4 months ago

Real Java Mock Interview | Java 8, Spring Boot & Microservices Coding Round

Real Java Mock Interview | Java 8, Spring Boot & Microservices Coding Round MJ's Codeverse

1.7K views - 4 months ago

Microservices Interview Questions 2026 🔥 System Design for Experienced Devs 😱

Microservices Interview Questions 2026 🔥 System Design for Experienced Devs 😱 MJ's Codeverse

1K views - 5 months ago

Apache Kafka Interview Questions & Answers for Experienced Developers 2026

Apache Kafka Interview Questions & Answers for Experienced Developers 2026 MJ's Codeverse

2.8K views - 5 months ago

Spring Boot Interview Questions & Answers for Experienced Developers (2026)

Spring Boot Interview Questions & Answers for Experienced Developers (2026) MJ's Codeverse

887 views - 5 months ago

Java Collection Interview Questions | HashMap Internals, Hashing, Rehashing & Collisions

Java Collection Interview Questions | HashMap Internals, Hashing, Rehashing & Collisions MJ's Codeverse

1.9K views - 5 months ago

Java 8 Streams Interview Questions: Crack Senior Level Coding Rounds (Live Coding)

Java 8 Streams Interview Questions: Crack Senior Level Coding Rounds (Live Coding) MJ's Codeverse

7.4K views - 6 months ago

Java Interview Questions 🔥 | Top 80 Most Asked | Core Java, Spring Boot, Microservices | 1–10 Yrs

Java Interview Questions 🔥 | Top 80 Most Asked | Core Java, Spring Boot, Microservices | 1–10 Yrs MJ's Codeverse

7.6K views - 6 months ago

Java Interview Questions – Multithreading in Java | 3–10 Years Experience | Java 8 & Spring Boot

Java Interview Questions – Multithreading in Java | 3–10 Years Experience | Java 8 & Spring Boot MJ's Codeverse

3.3K views - 7 months ago

LeetCode 3512 in 5 Minutes — Minimum Operations to Make Array Sum Divisible by K

LeetCode 3512 in 5 Minutes — Minimum Operations to Make Array Sum Divisible by K MJ's Codeverse

245 views - 7 months ago

Java Interview Questions and Answers for Experienced | Core Java, Java 8, Spring Boot, SQL

Java Interview Questions and Answers for Experienced | Core Java, Java 8, Spring Boot, SQL MJ's Codeverse

9K views - 8 months ago

Java Interview Question | LeetCode 22 Generate Parentheses (Google, Amazon, Netflix)

Java Interview Question | LeetCode 22 Generate Parentheses (Google, Amazon, Netflix) MJ's Codeverse

318 views - 9 months ago

Java 17 → Java 21 (2025 LTS) — All Key Features, Virtual Threads & Pattern Matching Explained 🚀

Java 17 → Java 21 (2025 LTS) — All Key Features, Virtual Threads & Pattern Matching Explained 🚀 MJ's Codeverse

399 views - 9 months ago

Java Spring Boot Interview Question | Inject Prototype Bean into Singleton using @Lookup

Java Spring Boot Interview Question | Inject Prototype Bean into Singleton using @Lookup MJ's Codeverse

727 views - 9 months ago

Monolithic vs Microservices Architecture – Explained Simply & When to Use

Monolithic vs Microservices Architecture – Explained Simply & When to Use MJ's Codeverse

164 views - 9 months ago

Difference Between == and equals() in Java | Most Asked Interview Question

Difference Between == and equals() in Java | Most Asked Interview Question MJ's Codeverse

197 views - 9 months ago

Java Interview Questions | Core Java, Java 8, Collections, Multithreading & Spring Boot

Java Interview Questions | Core Java, Java 8, Collections, Multithreading & Spring Boot MJ's Codeverse

17K views - 9 months ago

Java 25 Features Explained 🔥 | What’s New in JDK 25 (Full Overview)

Java 25 Features Explained 🔥 | What’s New in JDK 25 (Full Overview) MJ's Codeverse

812 views - 10 months ago

LeetCode 1304 | Find N Unique Integers Sum up to Zero | Java Easy 6-Line Solution #dsa #shortvideo

LeetCode 1304 | Find N Unique Integers Sum up to Zero | Java Easy 6-Line Solution #dsa #shortvideo MJ's Codeverse

116 views - 10 months ago

Java 8 Leetcode 179 Solution: Largest Number in Just 4 Lines! #coding

Java 8 Leetcode 179 Solution: Largest Number in Just 4 Lines! #coding MJ's Codeverse

97 views - 10 months ago

Java Features Explained: Java 9 ,10 ,11 ,14 | Must-Know Updates for 2025 🚀

Java Features Explained: Java 9 ,10 ,11 ,14 | Must-Know Updates for 2025 🚀 MJ's Codeverse

168 views - 10 months ago

Java Features Explained: Java 7 & Java 8 | Must-Know Updates for 2025 🚀

Java Features Explained: Java 7 & Java 8 | Must-Know Updates for 2025 🚀 MJ's Codeverse

233 views - 10 months ago

🚀 Java 24 Features Explained in 20 Minutes | Complete Guide for Developers

🚀 Java 24 Features Explained in 20 Minutes | Complete Guide for Developers MJ's Codeverse

314 views - 11 months ago

Final vs Finally vs Finalize in Java in 8 Minutes | Most Asked Java Interview Question #shortvideo

Final vs Finally vs Finalize in Java in 8 Minutes | Most Asked Java Interview Question #shortvideo MJ's Codeverse

82 views - 11 months ago

Spring Boot CRUD App Unit Testing with JUnit 5 & Mockito | Step-by-Step Tutorial #junit - Part 1

Spring Boot CRUD App Unit Testing with JUnit 5 & Mockito | Step-by-Step Tutorial #junit - Part 1 MJ's Codeverse

158 views - 11 months ago

#SpringBoot @ControllerAdvice Explained | Global Exception Handling in CRUD App #ExceptionHandling

#SpringBoot @ControllerAdvice Explained | Global Exception Handling in CRUD App #ExceptionHandling MJ's Codeverse

85 views - 11 months ago

#LeetCode238: #ProductOfArrayExceptSelf - No Division | Best O(n) Solution Explained! #dsa #array

#LeetCode238: #ProductOfArrayExceptSelf - No Division | Best O(n) Solution Explained! #dsa #array MJ's Codeverse

68 views - 11 months ago

#SpringBoot #CRUD #Application - #DELETE Mapping (#Delete #API) Explained | Part 6 #springboot

#SpringBoot #CRUD #Application - #DELETE Mapping (#Delete #API) Explained | Part 6 #springboot MJ's Codeverse

40 views - 11 months ago

#SpringBoot #CRUD Application - #PUT Mapping (Update #API) Explained | Part 5 #springboottutorial

#SpringBoot #CRUD Application - #PUT Mapping (Update #API) Explained | Part 5 #springboottutorial MJ's Codeverse

55 views - 11 months ago

#SpringBoot #CRUD Tutorial | #Get Employee by ID using @GetMapping | #RESTAPI Series - Part 4

#SpringBoot #CRUD Tutorial | #Get Employee by ID using @GetMapping | #RESTAPI Series - Part 4 MJ's Codeverse

57 views - 11 months ago

#SpringBoot CRUD Tutorial | Create Employee with #POST and #Get API | Full #RESTAPI Series -Part 3

#SpringBoot CRUD Tutorial | Create Employee with #POST and #Get API | Full #RESTAPI Series -Part 3 MJ's Codeverse

39 views - 11 months ago

#SpringBoot CRUD Tutorial | Create Employee with POST API | Full #RESTAPI Series -Part 1#PostMapping

#SpringBoot CRUD Tutorial | Create Employee with POST API | Full #RESTAPI Series -Part 1#PostMapping MJ's Codeverse

94 views - 11 months ago