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 4

How to Become a Java Developer: A Realistic Step-by-Step Pathbeginner6 min How to Get a Java Developer Job as a Fresherbeginner6 min Java Developer Roadmap 2026: Skills, Timeline and Milestonesbeginner6 min How to Switch from a Non-IT Background to Java Developerbeginner7 min

Comparisons 1

Java vs Python for Freshers: Which Should You Learn First?beginner6 min

Interview Guides 5

Java Interview Questions for 2 Years Experienceintermediate10 min Java Interview Questions for 3 Years Experienceintermediate11 min Java Interview Questions for 5 Years Experienceadvanced12 min Java Collections Interview Questions and Answersintermediate11 min Java OOP Interview Questions and Answersintermediate12 min

Tutorials 40

Java Arrays: Declaration, Iteration and Common Operationsbeginner7 min Java Control Statements: if, switch and Decision Makingbeginner6 min Java Data Types Explained with Examplesbeginner7 min JDK vs JRE vs JVM: What's the Difference?beginner6 min Java Loops: for, while, do-while and for-eachbeginner7 min Java Operators: Arithmetic, Logical, Bitwise and Morebeginner7 min Java Strings: String Pool, Immutability and Key Methodsbeginner6 min Java Variables: Declaration, Types and Scopebeginner6 min What is Java?beginner6 min ArrayList in Java: Internal Working and Operationsintermediate5 min ArrayList vs LinkedList: When to Use Whichintermediate6 min Java Collections Framework: The Complete Mapintermediate6 min HashMap in Java: Operations, Iteration and Best Practicesintermediate5 min HashMap vs ConcurrentHashMap: Thread Safety Explainedadvanced7 min HashMap vs Hashtable: Key Differencesintermediate6 min HashSet in Java: How It Works and When to Use Itintermediate6 min How HashMap Works Internally in Javaadvanced9 min List Interface in Java: ArrayList, LinkedList and Vectorintermediate6 min Map Interface in Java: HashMap, TreeMap and Moreintermediate6 min Set Interface in Java: HashSet, LinkedHashSet, TreeSetintermediate5 min Checked vs Unchecked Exceptions in Javaintermediate6 min Exception Handling in Java: try, catch, finally, throwbeginner6 min Functional Interfaces in Java: Predicate, Function, Consumer, Supplierintermediate6 min Java 8 Features: The Complete Practical Guideintermediate6 min Lambda Expressions in Java: Syntax and Real Use Casesintermediate6 min Java Optional: Stop Writing Null Checks the Wrong Wayintermediate6 min Java Streams: filter, map, collect and Beyondintermediate5 min Java Garbage Collection: How GC Really Worksadvanced7 min JVM Architecture: Class Loader, Runtime Areas and Execution Engineadvanced6 min Java Memory Management: Heap, Stack and Metaspaceadvanced7 min Java 17 Features: Records, Sealed Classes and Pattern Matchingintermediate6 min Deadlock in Java: Causes, Detection and Preventionadvanced6 min Multithreading in Java: Threads, Runnable and Executorsintermediate5 min Synchronization in Java: synchronized, Locks and volatileadvanced6 min Thread Lifecycle in Java: All 6 States Explainedintermediate5 min Abstraction in Java: Abstract Classes and Interfacesbeginner5 min Encapsulation in Java: Why Getters and Setters Matterbeginner5 min Inheritance in Java with Real Examplesbeginner6 min Java OOP Concepts: The Four Pillars Explainedbeginner7 min Polymorphism in Java: Compile-Time vs Runtimebeginner5 min