Java Programming Roadmap for BeginnersLast updated: Apr 3, 2026Author :Jitendra KumarIntroduction to Java & JVMBasic Syntax: Variables, Data Types, OperatorsControl Flow: if-else, switch, loopsRecursion BasicsFoundations of JavaSetting up Java & IDE (IntelliJ/Eclipse)Input & Output in JavaMethods & ParametersClasses & ObjectsEncapsulationPolymorphism (Compile-time & Runtime)Static & Final KeywordsObject-Oriented Programming (OOP)Constructors & OverloadingInheritance & Method OverridingAbstraction (Abstract Classes & Interfaces)Inner ClassesStrings & StringBuilderWrapper Classes & AutoboxingEnumsJava Memory Model (Stack vs Heap)Core Java ConceptsArrays & Multidimensional ArraysPackages & Access ModifiersAnnotationsIntroduction to CollectionsSet, HashSet, TreeSet, LinkedHashSetQueue & DequeComparable vs ComparatorCollections FrameworkList, ArrayList, LinkedListMap, HashMap, TreeMap, LinkedHashMapIterators & IterableGenericsFile Handling (I/O Streams, NIO)Multithreading & ConcurrencyFunctional InterfacesAdvanced Java ConceptsException HandlingSerialization & DeserializationJava 8 Features (Streams, Lambdas, Optional)Java 9+ Features (Modules, var, Records, etc.)Java Development Tools (Maven, Gradle)JUnit & Testing FrameworksJava EcosystemLogging Frameworks (Log4j, SLF4J)Build & Dependency ManagementJDBC BasicsConnection PoolingMapping Entities & RelationshipsDatabases & PersistenceCRUD Operations with JDBCIntroduction to JPA & HibernateJava Servlets & JSPSpring Boot BasicsSpring Data JPAFrameworks & Web DevelopmentSpring Core & Dependency InjectionREST API Development with Spring BootSpring SecurityDesign Patterns in JavaClean Code PracticesPerformance OptimizationSystem Design & Best PracticesSOLID PrinciplesError Handling StrategiesConsole-based ProjectsSpring Boot REST API ProjectBlogging Platform with Spring Boot + HibernateProject BuildingCRUD App with JDBCMini E-commerce ApplicationJava Core Concepts Q&ACollections Framework Q&ADSA in Java (LeetCode/AlgoMaster)Interview PreparationMultithreading & Concurrency Q&AJava 8+ Features Q&A