Siva Prasad Galaba
Founder, CodeBegun · Staff Engineer
Founder of CodeBegun. 15+ years building Java systems at companies like Crunchyroll. Teaches Java, Spring Boot and system design the way the industry actually works, and mentors students through projects, mock interviews and placement preparation.
Expertise: Java · Spring Boot · Microservices · System Design · Interview PreparationLinkedIn
Career Guides 89
Job Preparation Plan for 2026 Passouts30-Day Data Analyst Interview Preparation Plan30-Day Java Interview Preparation Plan90-Day Interview Preparation Plan for FreshersArts Graduate to IT Career: Yes, It Is PossibleATS-Friendly Resume Format for 2026 (With Template)Backend Developer Jobs for Freshers: How to Get Hired in 2026Backend Developer Resume Guide: Format, Keywords and ExamplesBackend Developer Roadmap 2026: Skills, Projects and MilestonesBiotech Graduate to IT Career: Paths That WorkBSc Graduate to Data Analyst: Step-by-Step PathBSc Graduate to Java Developer: Your Route into ITCan Average Students Get IT Jobs? Yes - Here Is HowCloud Engineer Roadmap 2026: Skills, Projects and MilestonesCommerce Graduate to Data Analyst: A Natural FitCommerce Graduate to Java Developer: Is It Possible?Contract vs Full-Time IT Roles: Which to PickCover Letter vs Email Body: Where to Put Your PitchData Analyst Jobs for Freshers: How to Get Hired in 2026Data Analyst Roadmap 2026: Skills, Projects and MilestonesData Engineer Roadmap 2026: Skills, Projects and MilestonesData Scientist Roadmap 2026: Skills, Projects and MilestonesDeclaration in Resume: Needed or Outdated?DevOps Engineer Roadmap 2026: Skills, Projects and MilestonesDigital Marketing to Data Analyst: A Smart PivotEEE to Java Developer: A Practical Transition GuideFresher Resume Format 2026: Sections, Order and SamplesFrontend Developer Jobs for Freshers: How to Get Hired in 2026Frontend Developer Roadmap 2026: Skills, Projects and MilestonesFull Stack Developer Resume Guide: Format, Keywords and ExamplesFull Stack Developer Roadmap 2026: Skills, Projects and MilestonesGitHub Collaboration Basics Every Fresher Should KnowGitHub for Freshers: Getting Started the Right WayHardware Engineer to Software Developer: Making the JumpHow to Become a Backend Developer: Step-by-Step Guide for 2026How to Become a Data Scientist: Step-by-Step Guide for 2026How to Become a Frontend Developer: Step-by-Step Guide for 2026How to Become a Java Developer: A Realistic Step-by-Step PathHow to Become a React Developer: Step-by-Step Guide for 2026How to Become a Web Developer: Step-by-Step Guide for 2026How to Build a Developer Portfolio WebsiteHow to Find Remote International Jobs from IndiaHow to Get a Java Developer Job as a FresherHow to Write the Skills Section of Your ResumeHow to Prepare for the HR Interview Round as a FresherHyderabad IT Job Market in 2026: Where the Jobs AreIT Jobs for Freshers with No Experience: Where to StartJava Developer Resume Guide: Format, Keywords and ExamplesJava Developer Roadmap 2026: Skills, Timeline and MilestonesJavaScript Developer Jobs for Freshers: How to Get Hired in 2026JavaScript Developer Roadmap 2026: Skills, Projects and MilestonesJob Application Follow-Up: Timing and EtiquetteLearn to Code in 2026: A Roadmap for Absolute BeginnersLinkedIn About Section Examples for FreshersLinkedIn Easy Apply vs Company Website: Where to ApplyLinkedIn Job Alerts: Set Them Up the Smart WayLinkedIn Open to Work: How to Use It Without Looking DesperateLinkedIn Post Ideas for Developers (30+ Prompts)LinkedIn Profile Optimization for Freshers: Full ChecklistMainframe Developer to Java Full Stack: Modernize Your CareerManual Testing to Developer: How to Make the MoveMass Recruiters vs Niche Companies: Where Should Freshers Apply?Mechanical Engineer to Data Analyst: A Switch PlanMechanical Engineer to Java Developer: A Complete Switch PlanMERN Stack Developer Roadmap 2026: Skills, Projects and MilestonesMultiple Job Offers: How to Choose the Right OneNaukri Profile Optimization: Get More Recruiter CallsHow to Switch from a Non-IT Background to Java DeveloperOne-Page vs Two-Page Resume: What Freshers Should UsePaid vs Unpaid Internships: Which Should Freshers Take?Pinned Repositories: What to Showcase on GitHubPortfolio for Data Analysts: What to IncludePython Developer Jobs for Freshers: How to Get Hired in 2026Python Developer Roadmap 2026: Skills, Projects and MilestonesReact Developer Jobs for Freshers: How to Get Hired in 2026Reapplying to a Company After Rejection: Rules and TimingRecruiter Screening Call: What to Say and AvoidSelf-Introduction for Freshers: Interview Scripts That WorkSelf-Introduction for a Java Developer InterviewSpring Boot Developer Resume Guide: Format, Keywords and ExamplesSpring Boot Developer Roadmap 2026: Skills, Projects and MilestonesSQL Developer Jobs for Freshers: How to Get Hired in 2026SQL Developer Roadmap 2026: Skills, Projects and MilestonesStarting a Coding Career at 40: Honest AdviceTechnical Support to Data Analyst: A Realistic SwitchTell Me About Yourself: Best Answers for Freshers and ExperiencedWeekend Interview Prep Plan for Working ProfessionalsWhat Companies Actually Expect from FreshersWriting a Good README for Your Projects
Comparisons 12
AWS vs Azure: Which Should You Use?Docker vs Kubernetes: Which Should You Use?Java vs JavaScript: Which Should You Learn?Java vs Python for Freshers: Which Should You Learn First?Kafka vs RabbitMQ: Key Differences ExplainedMachine Learning vs Deep Learning: Key Differences ExplainedManual Testing vs Automation Testing: Key Differences ExplainedMonolith vs Microservices: Key Differences ExplainedMySQL vs PostgreSQL: Key Differences ExplainedPower BI vs Tableau: Which Is Better for You?SQL vs NoSQL: Key Differences ExplainedTensorFlow vs PyTorch: Key Differences Explained
Interview Guides 123
Data Analytics Interview Questions for Experienced ProfessionalsData Analytics Interview Questions for FreshersData Analytics Data Cleaning Interview Questions and AnswersData Analytics Data Modeling Interview Questions and AnswersData Analytics Data Visualization Interview Questions and AnswersData Analytics ETL and Data Warehousing Interview Questions and AnswersData Analytics Machine Learning Basics Interview Questions and AnswersData Analytics Probability Interview Questions and AnswersData Analytics Python for Analysts Interview Questions and AnswersData Analytics SQL for Analysts Interview Questions and AnswersData Analytics Statistics Interview Questions and AnswersData Analytics Tableau Interview Questions and AnswersBehavioral Interview Questions and the STAR MethodConflict Resolution Interview Questions and Sample AnswersHR Interview Questions and Answers for Experienced CandidatesHR Interview Questions and Answers for FreshersLeadership Interview Questions and Sample AnswersManagerial Round Interview Questions and AnswersSalary Negotiation Interview Questions and How to Answer ThemStress Interview Questions and How to Handle ThemTeamwork Interview Questions and Sample AnswersHow to Answer "Tell Me About Yourself" in an InterviewTime Management Interview Questions and Sample AnswersHow to Answer "What Are Your Strengths and Weaknesses?"How to Answer "Where Do You See Yourself in 5 Years?"How to Answer "Why Are You Leaving Your Current Job?"How to Answer "Why Do You Want to Join Our Company?"How to Answer "Why Should We Hire You?"Java Interview Questions for 1 Year ExperienceJava Interview Questions for 10 Years ExperienceJava Interview Questions for 2 Years ExperienceJava Interview Questions for 3 Years ExperienceJava Interview Questions for 4 Years ExperienceJava Interview Questions for 5 Years ExperienceJava Interview Questions for 6 Years ExperienceJava Interview Questions for 7 Years ExperienceJava Interview Questions for 8 Years ExperienceJava Coding Questions for InterviewsJava Collections Interview Questions and AnswersJava Concurrency Interview Questions and AnswersJava Exception Handling Interview Questions and AnswersJava Interview Questions for Experienced ProfessionalsJava Functional Interfaces Interview Questions and AnswersJava Garbage Collection Interview Questions and AnswersJava Generics Interview Questions and AnswersHow Does HashMap Work Internally? (Java Interview Deep Dive)Java 11 Features Interview Questions and AnswersJava 17 Features Interview Questions and AnswersJava 21 Features Interview Questions and AnswersJava 8 Features Interview Questions and AnswersJava JVM Interview Questions and AnswersJava Lambda Expressions Interview Questions and AnswersJava Memory Management Interview Questions and AnswersJava Multithreading Interview Questions and AnswersJava OOP Interview Questions and AnswersJava Interview Questions for Senior DevelopersJava Streams Interview Questions and AnswersJava String Handling Interview Questions and AnswersMicroservices API Gateway Interview Questions and AnswersMicroservices Architecture Interview Questions and AnswersMicroservices Circuit Breaker Interview Questions and AnswersMicroservices Communication Interview Questions and AnswersMicroservices Distributed Transactions Interview Questions and AnswersMicroservices Event Driven Architecture Interview Questions and AnswersMicroservices Load Balancing Interview Questions and AnswersMicroservices Interview Questions for 3 Years ExperienceMicroservices Interview Questions for 5 Years ExperienceMicroservices Design Patterns Interview Questions and AnswersMicroservices Interview Questions for Senior DevelopersMicroservices Resilience Patterns Interview Questions and AnswersMicroservices Saga Pattern Interview Questions and AnswersMicroservices Service Discovery Interview Questions and AnswersReact Components and Props Interview Questions and AnswersReact Context API Interview Questions and AnswersReact Event Handling Interview Questions and AnswersReact Forms Handling Interview Questions and AnswersReact Hooks Interview Questions and AnswersReact Lifecycle Methods Interview Questions and AnswersReact Performance Optimization Interview Questions and AnswersReact Interview Questions for 2 Years ExperienceReact Interview Questions for 3 Years ExperienceReact Interview Questions for 5 Years ExperienceReact Interview Questions for FreshersReact React Router Interview Questions and AnswersReact Redux Interview Questions and AnswersReact State Management Interview Questions and AnswersSpring Boot Actuator Interview Questions and AnswersSpring Boot Auto Configuration Interview Questions and AnswersSpring Boot Bean Lifecycle Interview Questions and AnswersSpring Boot Bean Scopes Interview Questions and AnswersSpring Boot Configuration Properties Interview Questions and AnswersSpring Boot Dependency Injection Interview Questions and AnswersSpring Boot Profiles Interview Questions and AnswersSpring Boot REST API Interview Questions and AnswersSpring Boot Spring AOP Interview Questions and AnswersSpring Boot Spring Batch Interview Questions and AnswersSpring Boot Interview Questions for 2 Years ExperienceSpring Boot Interview Questions for 3 Years ExperienceSpring Boot Interview Questions for 5 Years ExperienceSpring Boot Annotations Interview Questions and AnswersSpring Boot Exception Handling Interview Questions and AnswersSpring Boot Interview Questions for Experienced ProfessionalsSpring Boot Interview Questions for FreshersSpring Boot Spring Cloud Interview Questions and AnswersSpring Boot Spring Data JPA Interview Questions and AnswersSpring Boot Spring MVC Interview Questions and AnswersSpring Boot Spring Security Interview Questions and AnswersWhat Is the Difference Between Spring and Spring Boot? (Spring Boot Interview Deep Dive)SQL Aggregate Functions Interview Questions and AnswersSQL Constraints Interview Questions and AnswersSQL Group by and Having Interview Questions and AnswersHow to Find the Second Highest Salary in SQL? (SQL Interview Deep Dive)SQL Indexes Interview Questions and AnswersSQL Joins Interview Questions and AnswersSQL Normalization Interview Questions and AnswersSQL Interview Questions for 5 Years ExperienceSQL Interview Questions for Experienced ProfessionalsSQL Interview Questions for FreshersSQL Stored Procedures Interview Questions and AnswersSQL Subqueries Interview Questions and AnswersSQL Triggers Interview Questions and AnswersSQL Views Interview Questions and AnswersSQL Window Functions Interview Questions and Answers
Tutorials 173
Categorical Data Encoding BasicsData Validation Rules for AnalystsFixing Data Types in PandasFixing Date Formats in PandasHandling Missing Values in PandasImputation Techniques for Missing DataFixing Inconsistent Category LabelsNormalization vs StandardizationOutlier Detection and TreatmentRemoving Duplicate Records in PandasStandardizing Text Data in PandasWhat Is Data Cleaning in AnalyticsThe Data Analysis Process, Step by StepData Collection Methods for AnalystsData-Driven Decision Making ExplainedData Quality Dimensions Every Analyst NeedsKPIs and Metrics: What Analysts TrackLevels of Measurement in StatisticsPopulation vs Sample in StatisticsQualitative vs Quantitative Data ExplainedSpreadsheets vs Databases for AnalystsStructured vs Unstructured DataThe Four Types of Data AnalyticsWhat Is Data Analytics? A Beginner's GuideNumPy Tutorial: Arrays for Data AnalysisPandas apply, map and applymapPandas Datetime Handling for AnalysisPandas: Filtering Rows by ConditionPandas GroupBy: Aggregate and SummarizePandas Tutorial: A Beginner's IntroductionPandas loc vs iloc: Selecting DataPandas Merge and Join ExplainedPandas Pivot Tables for AnalysisPandas: Read CSV and Excel FilesPandas DataFrame and Series ExplainedPandas String Methods for Cleaning TextSQL Aggregate Functions for AnalystsSQL CASE Statements for Data AnalystsSQL CTEs for Data AnalystsSQL for Data Analysts: A Practical StartGROUP BY and HAVING for ReportingSQL Joins Explained for Data AnalystsORDER BY and LIMIT for ReportingSELECT and WHERE for Data AnalystsSQL Self Joins for Data AnalystsSQL Subqueries for Data AnalystsSQL Window Functions for AnalystsThe Central Limit Theorem in Plain EnglishCorrelation vs Causation for AnalystsDescriptive Statistics for Data AnalystsHypothesis Testing Basics for AnalystsMean, Median and Mode ExplainedThe Normal Distribution and Z-ScoresP-Values Explained Without the JargonPearson vs Spearman CorrelationPercentiles and Quartiles Made ClearProbability Basics for Data AnalysisProbability Distributions ExplainedVariance and Standard DeviationBar Charts Best PracticesBox Plots Explained for AnalystsChoosing the Right Chart TypeColor in Data VisualizationData Visualization PrinciplesHeatmaps in Data AnalysisHistograms Explained for AnalystsLine Charts for Time SeriesMisleading Charts and How to Spot ThemPie Charts: When to Use ThemScatter Plots: A Practical GuideJava Arrays: Declaration, Iteration and Common OperationsConstructors in Java: Default, Parameterized and CopyJava Control Statements: if, switch and Decision MakingJava Data Types Explained with ExamplesYour First Java Program: Hello World Step by StepHow to Install Java on Windows, macOS and LinuxJDK vs JRE vs JVM: What's the Difference?Java Loops: for, while, do-while and for-eachJava Operators: Arithmetic, Logical, Bitwise and Morestatic Keyword in Java: Variables, Methods and BlocksJava Strings: String Pool, Immutability and Key MethodsJava Variables: Declaration, Types and ScopeWhat is Java?ArrayList in Java: Internal Working and OperationsArrayList vs LinkedList: When to Use WhichJava Collections Framework: The Complete MapHashMap in Java: Operations, Iteration and Best PracticesHashMap vs ConcurrentHashMap: Thread Safety ExplainedHashMap vs Hashtable: Key DifferencesHashSet in Java: How It Works and When to Use ItHow HashMap Works Internally in JavaList Interface in Java: ArrayList, LinkedList and VectorMap Interface in Java: HashMap, TreeMap and MoreSet Interface in Java: HashSet, LinkedHashSet, TreeSetChecked vs Unchecked Exceptions in JavaException Handling in Java: try, catch, finally, throwFunctional Interfaces in Java: Predicate, Function, Consumer, SupplierJava 8 Features: The Complete Practical GuideLambda Expressions in Java: Syntax and Real Use CasesJava Optional: Stop Writing Null Checks the Wrong WayJava Streams: filter, map, collect and BeyondJava Garbage Collection: How GC Really WorksJVM Architecture: Class Loader, Runtime Areas and Execution EngineJava Memory Management: Heap, Stack and MetaspaceJava 17 Features: Records, Sealed Classes and Pattern MatchingDeadlock in Java: Causes, Detection and PreventionMultithreading in Java: Threads, Runnable and ExecutorsSynchronization in Java: synchronized, Locks and volatileThread Lifecycle in Java: All 6 States ExplainedAbstract Class vs Interface in Java: How to ChooseAbstraction in Java: Abstract Classes and InterfacesClasses and Objects in Java: The Building BlocksEncapsulation in Java: Why Getters and Setters MatterThe equals and hashCode Contract in Java ExplainedInheritance in Java with Real ExamplesInterfaces in Java: Contracts, Default Methods and RulesMethod Overloading in Java: Rules and ExamplesMethod Overriding in Java: Rules and the @Override AnnotationJava OOP Concepts: The Four Pillars ExplainedPolymorphism in Java: Compile-Time vs RuntimeWhat Is an API Gateway?Microservices Interview Questions and AnswersSaga PatternDomain Driven Design BasicsDocker Basics for MicroservicesMicroservices Architecture ExplainedMicroservices vs MonolithWhat Are Microservices?Apache Kafka BasicsObservability vs MonitoringCircuit Breaker PatternMicroservices Security Best PracticesControlled Components React FormsReact vs Angular vs VueSetup React Project with ViteWhat Is React?React Hooks IntroductionJSX Syntax GuideNext.js IntroductionHigher Order ComponentsReact Performance OptimizationReact Router Tutorial for BeginnersReact State Management OverviewReact Testing Library Tutorial for Beginners@Autowired in Spring: How Autowiring Really WorksSpring Bean Lifecycle: From Instantiation to DestructionSpring Bean Scopes: Singleton, Prototype and Web ScopesDependency Injection in Spring: Constructor vs Setter vs FieldInversion of Control (IoC) in SpringSpring Beans: Definition, Creation and WiringSpring vs Spring Boot: What's the DifferenceWhat is the Spring Framework?Spring Data JPA: Getting StartedRequest Validation in Spring Boot with Bean ValidationBuilding a REST API with Spring BootException Handling in Spring Boot REST APIs with @ControllerAdviceapplication.properties in Spring Boot: The Settings That MatterSpring Boot Auto-Configuration: How It Really WorksEssential Spring Boot Annotations, Explained in One PlaceBuild Your First Spring Boot ApplicationSpring Boot Starters: What Each One BundlesWhat is Spring Boot?GROUP BY in SQLCREATE TABLE in SQLWhat Is SQL?Database NormalizationSQL Indexes ExplainedSQL Interview Questions and AnswersSQL Joins ExplainedThe SELECT Statement in SQLSubqueries in SQLSQL Transactions ExplainedSQL Window Functions Introduction