Sudhanshu @codeWithSud

The first Trillionaire in human history. Elon Musk.

Hindu men should proactively work to become more masculine. You are losing it over screen based visual entertainment and social media. Three concrete recommendations 1. Make Hanuman your role model. Study his life in detail as per Ramayan. Always think what Hanuman ji would do. And emulate. 2. Stop all forms of visual stimulations. Instead of movies, read books. Do dhyana for at least 15 minutes. 3. Keep Geeta Chapter 2 - word by word - handy. Keep reading again and again. Follow to last detail. These are bare minimum. Flout any of these and you will be a lesser man than what you could could be. We need real solid men to save our civilization and spread it as epicenter of world. Else, we wither away.

Already done with 100k ultra, Ready to lose my mind and go for the full 100 miles. ​Any suggestions for a first 100-miler? Ideally something with decent views ( in India ) 🏔️🏃‍♂️ #Ultrarunning #100Miles

In an AI uprising, I will get hunted.

Sudhanshu @codeWithSud

5 months ago

Ummm... AI doesn't have a good perception of me.

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Ummm... AI doesn't have a good perception of me.

2026 31 this year. Life's moving fast.

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Sudhanshu @codeWithSud

a year ago

2025 30 this year. New decade starts.

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Crack Java Interviews Series 🚀 Question 60/60 The final classic 🎯 Q: What is dependency injection? Answer: • Objects receive dependencies externally • Reduces tight coupling • Improves testability • Core principle of Spring • Enables flexible design In short: DI lets Spring wire your app cleanly. 💬 Follow for more backend content 🚀

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 59/60 Java performance 🧮 Q: What is autoboxing? Answer: • Converts primitives to wrapper objects • Happens automatically • Can cause performance overhead • Can lead to NullPointerExceptions • Be careful in loops In short:

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Crack Java Interviews Series 🚀 Question 59/60 Java performance 🧮 Q: What is autoboxing? Answer: • Converts primitives to wrapper objects • Happens automatically • Can cause performance overhead • Can lead to NullPointerExceptions • Be careful in loops In short: Autoboxing is convenient but costly. 💬 Want Question 60? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 58/60 Q: What is ResponseEntity used for? Answer: • Wraps response body + status code • Allows custom headers • Gives full control over response • Common in REST APIs • Improves API clarity In short: ResponseEntity controls the

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Crack Java Interviews Series 🚀 Question 58/60 Q: What is ResponseEntity used for? Answer: • Wraps response body + status code • Allows custom headers • Gives full control over response • Common in REST APIs • Improves API clarity In short: ResponseEntity controls the HTTP response. 💬 Want Question 59? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 57/60 Q: What is race condition? Answer: • Multiple threads access shared data • Outcome depends on execution order • Causes inconsistent results • Hard to reproduce • Fixed using synchronization In short: Race conditions cause

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Crack Java Interviews Series 🚀 Question 57/60 Q: What is race condition? Answer: • Multiple threads access shared data • Outcome depends on execution order • Causes inconsistent results • Hard to reproduce • Fixed using synchronization In short: Race conditions cause unpredictable bugs. 💬 Want Question 58? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 56/60 Spring Boot startup 🟢 Q: CommandLineRunner vs ApplicationRunner? Answer: • Both run on startup • CommandLineRunner uses String args • ApplicationRunner provides parsed args • Used for bootstrapping logic • Execution order

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Crack Java Interviews Series 🚀 Question 56/60 Spring Boot startup 🟢 Q: CommandLineRunner vs ApplicationRunner? Answer: • Both run on startup • CommandLineRunner uses String args • ApplicationRunner provides parsed args • Used for bootstrapping logic • Execution order can be controlled In short: Same goal, different argument handling. 💬 Want Question 57? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 55/60 Java design basics 🧱 Q: Abstract class vs Interface — difference? Answer: • Abstract class can have state • Interface supports multiple inheritance • Interfaces are more flexible • Java 8 allows default methods • Interfaces

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Crack Java Interviews Series 🚀 Question 55/60 Java design basics 🧱 Q: Abstract class vs Interface — difference? Answer: • Abstract class can have state • Interface supports multiple inheritance • Interfaces are more flexible • Java 8 allows default methods • Interfaces preferred for APIs In short: Use interfaces for contracts. 💬 Want Question 56? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 54/60 Q: What is embedded server in Spring Boot? Answer: • Comes bundled with Tomcat/Jetty/Netty • No external server needed • Simplifies deployment • Faster development • Easy cloud deployments In short: Spring Boot runs itself.

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Crack Java Interviews Series 🚀 Question 54/60 Q: What is embedded server in Spring Boot? Answer: • Comes bundled with Tomcat/Jetty/Netty • No external server needed • Simplifies deployment • Faster development • Easy cloud deployments In short: Spring Boot runs itself. 💬 Want Question 55? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 53/60 Q: What is atomicity? Answer: • Operation completes fully or not at all • Prevents partial updates • Achieved via locks or atomic classes • Important in multithreading • volatile does NOT guarantee atomicity In short:

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Crack Java Interviews Series 🚀 Question 53/60 Q: What is atomicity? Answer: • Operation completes fully or not at all • Prevents partial updates • Achieved via locks or atomic classes • Important in multithreading • volatile does NOT guarantee atomicity In short: Atomicity prevents half-written data. 💬 Want Question 54? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 52/60 Spring Boot configuration 🔧 Q: application.properties vs application.yml? Answer: • Both define configuration • YML is more readable for hierarchies • Properties are simpler for flat configs • Functionally identical •

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Crack Java Interviews Series 🚀 Question 52/60 Spring Boot configuration 🔧 Q: application.properties vs application.yml? Answer: • Both define configuration • YML is more readable for hierarchies • Properties are simpler for flat configs • Functionally identical • Choice is mostly preference In short: Same purpose, different format. 💬 Want Question 53? Follow + Save

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 51/60 Q: What is a daemon thread? Answer: • Runs in background • JVM doesn’t wait for it to finish • Used for housekeeping tasks • Example: GC threads • Stops when all user threads stop In short: Daemon threads support the app, not

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Crack Java Interviews Series 🚀 Question 51/60 Q: What is a daemon thread? Answer: • Runs in background • JVM doesn’t wait for it to finish • Used for housekeeping tasks • Example: GC threads • Stops when all user threads stop In short: Daemon threads support the app, not block exit. 💬 Want Question 52? Follow + Save

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 50/60 Spring Boot data access 🗄️ Q: CrudRepository vs JpaRepository — difference? Answer: • CrudRepository → basic CRUD • JpaRepository → pagination + sorting • JpaRepository extends CrudRepository • More features, same core

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Crack Java Interviews Series 🚀 Question 50/60 Spring Boot data access 🗄️ Q: CrudRepository vs JpaRepository — difference? Answer: • CrudRepository → basic CRUD • JpaRepository → pagination + sorting • JpaRepository extends CrudRepository • More features, same core purpose • Preferred for JPA apps In short: JpaRepository = Crud + extras. 💬 Want Question 51? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 49/60 Java 8+ fundamentals 🧩 Q: What are functional interfaces? Answer: • Interfaces with exactly one abstract method • Used with lambdas • Example: Runnable, Comparator • Enable functional programming • Annotated with

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Crack Java Interviews Series 🚀 Question 49/60 Java 8+ fundamentals 🧩 Q: What are functional interfaces? Answer: • Interfaces with exactly one abstract method • Used with lambdas • Example: Runnable, Comparator • Enable functional programming • Annotated with @FunctionalInterface In short: Functional interfaces power lambdas. 💬 Want Question 50? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 48/60 Spring Boot exception handling 🛑 Q: What is @ControllerAdvice used for? Answer: • Global exception handling • Keeps controllers clean • Centralizes error responses • Supports custom exception mapping • Improves API

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Crack Java Interviews Series 🚀 Question 48/60 Spring Boot exception handling 🛑 Q: What is @ControllerAdvice used for? Answer: • Global exception handling • Keeps controllers clean • Centralizes error responses • Supports custom exception mapping • Improves API consistency In short: One place to handle all controller errors. 💬 Want Question 49? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 47/60 Concurrency interview classic ⚡ Q: What is the difference between process and thread? Answer: • Process → isolated memory • Thread → shared memory • Threads are lighter than processes • Context switching is cheaper for

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Crack Java Interviews Series 🚀 Question 47/60 Concurrency interview classic ⚡ Q: What is the difference between process and thread? Answer: • Process → isolated memory • Thread → shared memory • Threads are lighter than processes • Context switching is cheaper for threads • Java mainly works with threads In short: Threads share memory; processes don’t. 💬 Want Question 48? Follow + Save.

Sudhanshu @codeWithSud

6 months ago

Crack Java Interviews Series 🚀 Question 46/60 Q: @ComponentScan — what does it do? Answer: • Scans packages for Spring beans • Registers them in ApplicationContext • Controls which classes become beans • Default scan starts from main class package • Misuse can cause

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