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1 month ago | [YT] | 1

CodeGuru

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3 months ago | [YT] | 1

CodeGuru

🚀 My Java Developer Interview Experience – Key Takeaways

youtube.com/@codeguru0?si=FdOxRo1e7zDvIRbj

Yesterday, I attended an interview for a #JavaDeveloper role and I want to share my experience so that others who are preparing can benefit from it.

👉 One thing that stood out was that the interviewer focused a lot on fundamentals and core concepts instead of just advanced frameworks.
Here are some of the questions I was asked 👇

🔹 Can you brief about yourself?
🔹 How much would you rate yourself in Java?
🔹 If we remove the static keyword from public static void main, will the code compile?
🔹 How many ways can you initialize a String?
🔹 Difference between String literal initialization and using new keyword?
🔹 Difference between sleep() and wait() methods?
🔹 Difference between StringBuffer and StringBuilder?
🔹 What is a Singleton class and how can you achieve it?
🔹 What are interfaces?
🔹 What are functional interfaces?
🔹 What are static methods?
🔹 Difference between HashMap and HashTree?
🔹 Internal working of HashMap in Java?
🔹 Difference between HashMap and Hashtable?
🔹 What is ConcurrentHashMap?
🔹 What is Optional class in Java 8?
🔹 What is a default method and when should we use it?
🔹 What are lambda expressions?
🔹 What is flatMap()?
🔹 Difference between PUT and POST methods?
🔹 What is a starter dependency in Spring Boot?
🔹 Difference between @Controller and @RestController?
🔹 What is an endpoint in REST API?
🔹 Difference between Comparable and Comparator?
🔹 What is a fail-fast iterator?
🔹 Difference between Callable and Runnable interfaces?
🔹 SQL query to find second highest salary of an employee.
🔹 What will happen if you execute this code?
list.stream().forEach(System.out::println).forEach(System.out::println);
🔹 Difference between final, finally, and finalize.
🔹 Can a try block exist without a catch block?
🔹 How can you secure a Spring Boot REST API?
🔹 How can you handle exceptions globally in Spring Boot?
🔹 How does auto-configuration work in Spring Boot and how can you exclude a particular auto-configuration class?

💡 My Learning:
This interview reinforced that strong core Java concepts + clear understanding of Spring Boot fundamentals are more important than just memorizing advanced tools.

✅ If you’re preparing for Java interviews:
Focus on Core Java, OOPs, and Java 8 features
Revise Collections, Multithreading & Exception Handling
Understand Spring Boot basics & internals
Practice SQL queries as well

❓ Have you also experienced interviews where fundamentals were given more weightage than frameworks? Would love to hear your thoughts. 👇

🔗 youtube.com/@codeguru0?si=FdOxRo1e7zDvIRbj

🙌 Also, I’m immediately available for Java Developer roles. If you know of any openings, your support or referrals would mean a lot!

#Java #SpringBoot #InterviewExperience #BackendDevelopment #JavaDeveloper #JobSearch #Hiring

3 months ago | [YT] | 1

CodeGuru

🎯 Web Developer Banna Hai? Yeh Course Hai Aapke Liye!

Agar aap soch rahe ho ki web development kaise shuru karein, toh aap bilkul sahi jagah par ho! 💻 Yeh YouTube Shorts series ek complete Web Developer Course for Beginners hai jahan aap step-by-step web development seekhenge — bina kisi confusion ke.

Har short video mein hum ek important topic cover karenge, jaise:

✅ HTML – Website ka structure
✅ CSS – Website ka design aur styling
✅ JavaScript – Website ko interactive banana
✅ Responsive Design – Mobile-friendly websites
✅ Hosting – Website ko online kaise karein


Chahe aap ek student ho, job ke liye skill seekh rahe ho, ya freelancing start karna chahte ho — yeh course har level ke learner ke liye perfect hai.

👉 Kya hasil hoga is course se?

Strong foundation in frontend web development

Apni pehli website banana seekh jaoge

Future me React, Node.js, aur backend skills ke liye ready ho jaoge

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#WebDevelopment #LearnCoding #HTML #CSS #JavaScript #WebDeveloper #FrontendDeveloper #CodingForBeginners #Shorts

4 months ago | [YT] | 1

CodeGuru

Welcome to Code Guru0!
Are you ready to master the world of programming?

🎯 Whether you're just starting out or looking to sharpen your skills, at Code Guru0 we dive deep into:

🔥 Java – Build powerful backend applications

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4 months ago | [YT] | 1

CodeGuru

🛠️✨ React.js + Tailwind CSS Web App – Live Now!

Hey everyone! I'm super excited to share my latest project — a fully responsive modern web application built using React.js and Tailwind CSS, and deployed live on Netlify! 🚀

This project was a hands-on experience that helped me grow as a frontend developer. From component architecture to styling and deployment, I handled everything from scratch and learned a lot in the process.

📌 Project Highlights:
✅ Built with React.js – clean, modular, and component-based structure
✅ Styled using Tailwind CSS – fast, responsive, and utility-first
✅ Mobile-first design – works perfectly on all devices
✅ Deployed using Netlify – live in seconds with CI/CD

🔗 Check out the live version here:
👉 6863d875e5794f007ff9d804--amazing-genie-96aee4.net…

👨‍💻 I’d love your feedback, suggestions, or thoughts on how I can improve it further.
💬 Let me know what you think in the comments!

🔥 More exciting projects coming soon! Stay connected.
If you're passionate about frontend development or learning React + Tailwind, follow me for more real-world projects and tutorials.

#ReactJS #TailwindCSS #WebDevelopment #FrontendDeveloper #ProjectShowcase #Netlify #ResponsiveDesign #JavaScript #PortfolioProject

5 months ago | [YT] | 1

CodeGuru

🗓️ Java 30-Day Learning Roadmap (Java)



📍 Week 1: Java Basics और Foundation

Day 1: Java Intro, JDK, JVM, Hello World Program

Day 2: Variables, Data Types

Day 3: Type Casting, Operators

Day 4: User Input using Scanner

Day 5: Simple Calculator Program

Day 6: Practice: Basic Math Operations

Day 7: Mini Project: Simple Calculator



📍 Week 2: Control Flow और Loops

Day 8: If/Else Conditions

Day 9: Switch Statement

Day 10: For Loops

Day 11: While/Do-While Loops

Day 12: Break/Continue, Pattern Printing

Day 13: 1D Arrays

Day 14: Project: Student Marks Calculator



📍 Week 3: Methods, OOP Concepts & Arrays

Day 15: Functions & Parameters

Day 16: Return Types, Method Overloading

Day 17: Classes and Objects

Day 18: Constructors and `this` Keyword

Day 19: Inheritance and Super Keyword

Day 20: Method Overriding

Day 21: Encapsulation and Getters/Setters



📍 Week 4: Advanced Topics & Final Projects

Day 22: 2D Arrays

Day 23: String & StringBuilder

Day 24: Exception Handling

Day 25: File Handling (Read/Write)

Day 26: ArrayList & HashMap

Day 27: For-each Loop, Collections

Day 28: GUI Basics with Swing

Day 29: GUI Project - Calculator

Day 30: Final Project - Bank Management System



javainterviewpreparation -Java By TechieAyushi Chopra #Noida #Job #Delhi #JavaDeveloper #WebDeveloper

6 months ago | [YT] | 1

CodeGuru

Most asked JavaScript interview questions

Trust me in 80% of JavaScript interviews held on these questions You don't need to prepare apart from this.

𝗖𝗼𝗿𝗲 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁:
1. What is the difference between var, let, and const?
2. Explain hoisting in JavaScript with examples.
3. What are closures in JavaScript?
4. Explain the difference between shallow copy and deep copy.
5. What is the difference between == and === in JavaScript?
6. How does the event loop work in JavaScript?
7. What are promises and how do they work?
8. What is async/await, and how is it different from promises?
9. What is memoization, and how can it be implemented in JavaScript?
10. What are higher-order functions, and can you give an example?

𝗢𝗯𝗷𝗲𝗰𝘁-𝗢𝗿𝗶𝗲𝗻𝘁𝗲𝗱 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 (𝗢𝗢𝗣):
11. What is prototypal inheritance, and how does it work?
12. What is the difference between Object.create() and class-based inheritance?
13. How does this keyword work in JavaScript?
14. What are getter and setter functions in JavaScript?
15. What is the difference between call(), apply(), and bind()?

𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴:
16. What is currying, and how do you implement it?
17. Explain functional programming concepts in JavaScript.
18. What are pure functions, and why are they useful?
19. What is debouncing and throttling? How are they implemented?
20. How do you optimize performance using lazy loading?

𝗔𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁:
21. What are Web Workers, and when should you use them?
22. How does setTimeout and setInterval work under the hood?
23. Explain Microtasks and Macrotasks in JavaScript.
24. What is Promise.all(), and how does it differ from Promise.race()?
25. How do you handle errors in async/await?

𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗧𝗼𝗽𝗶𝗰𝘀:
26. How does JavaScript garbage collection work?
27. What are weak references (WeakMap, WeakSet)?
28. Explain Generators and Iterators in JavaScript.
29. What are ES6 Modules, and how are they different from CommonJS?
30. How do you prevent memory leaks in JavaScript!!!

9 months ago | [YT] | 2

CodeGuru

🚀 HTML & JavaScript Class - Apna Web Development Career Shuru Karein! 🌐

Kya aapko apna career web development mein banana hai? Kya aap HTML aur JavaScript sikhna chahte hain? Toh aapka waqt aagaya hai!

Humari HTML aur JavaScript ki class aapko web development ki duniya mein step-by-step guide karegi. Aap seekhenge:

🔹 HTML Basics – Web pages banane ki asli duniya ki jaan!
🔹 JavaScript Fundamentals – Interactive aur dynamic websites create karna!
🔹 Real-World Projects – HTML aur JavaScript ko use kar ke real websites banaana!
🔹 Responsive Web Design – Apni websites ko har device par perfect dikhana!

Aapko jo chahiye:

No prior knowledge of HTML/JS is required!
Sab kuch simple aur practical tareeqe se sikhaya jaayega.
Humari class se aap apne skills ko upgrade karenge aur apni first web page/website banayenge!
Class Details: 🗓 Date: [Insert Date]
⏰ Time: [Insert Time]
📍 Location: [Online or In-person]
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Join now! Apni jagah reserve karne ke liye DM karein ya [contact details] pe reach out karein!

Chaliye, web development ke iss safar mein saath chal kar apni skills ko naye level tak le kar chalte hain!

11 months ago | [YT] | 4

CodeGuru

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1 year ago | [YT] | 8