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Java Programming

HomeJava Programming

 1. Introduction to Java & Setup

  • History of Java and its ecosystem
  • Installing JDK and setting up IDE (IntelliJ, Eclipse, or VS Code)
  • Understanding JVM, JRE, and JDK
  • Writing your first Java program
  • Java program execution cycle (compile → bytecode → JVM execution)

2. Advanced Java (Java EE concepts)

Database Connectivity (JDBC)

  • JDBC architecture and drivers
  • Connecting Java applications with MySQL/PostgreSQL
  • Executing queries and processing results
  • Prepared statements and transactions

Java Networking

  • Basics of networking (IP, ports, sockets)
  • Client-server communication
  • HTTP requests in Java

Web Concepts

  • Servlet basics (request/response model)
  • JSP (Java Server Pages) fundamentals
  • MVC architecture in Java web applications

2. Core Java (Java SE – Standard Edition)

Basics of Java Programming

  • Variables, data types, and operators
  • Input/output in Java (Scanner, in, System.out)
  • Control structures: if, switch, loops (for, while, do-while)
  • Functions/methods: definition, arguments, return types
  • Arrays (1D, 2D, jagged arrays)

Object-Oriented Programming (OOP) Concepts

  • Classes and objects
  • Encapsulation, inheritance, polymorphism, and abstraction
  • Constructors and method overloading
  • Abstract classes and interfaces
  • Access modifiers (public, private, protected, default)
  • Static keyword (methods, blocks, variables)
  • this and super keywords

Core Features

  • Strings and StringBuilder, StringBuffer
  • Exception handling (try, catch, finally, throw, throws)
  • Java packages and importing libraries
  • Collections Framework
    • List, Set, Map, Queue, Stack, HashMap, LinkedList, etc.
    • Iterators and foreach loops
  • Generics in Java
  • Enums and inner classes

Multithreading & Concurrency

  • Thread creation (Threadclass, Runnable interface)
  • Thread lifecycle and synchronization
  • Executors and thread pools
  • Concurrency utilities (ConcurrentHashMap, CountDownLatch, etc.)

File Handling & I/O

  • Reading and writing files (FileReader, BufferedReader, FileWriter)
  • Serialization and deserialization
  • Java NIO Basics

 Advanced Spring Boot Features

  • Exception handling in REST APIs (@ControllerAdvice)
  • Logging with SLF4J and Logback
  • Actuator for monitoring and health checks
  • Caching with Spring Cache
  • Asynchronous calls with @Async
  • Scheduling tasks with @Scheduled

Spring Boot Deployment

  • Packaging a Spring Boot app as JAR/WAR
  • Deploying to cloud platforms (Heroku, AWS, Azure, Docker)
  • Environment variable management & profiles
  • CI/CD basics for Spring Boot application

4. Spring & Spring Boot Framework

Spring Core

  • Introduction to Spring Framework
  • Inversion of Control (IoC) & Dependency Injection
  • Spring Beans lifecycle and configuration (XML & Annotations)

Spring Boot Basics

  • Introduction to Spring Boot (what makes it different from Spring)
  • Creating your first Spring Boot application
  • Project structure and auto-configuration
  • Configuration with propertiesor application.yml

Spring Web (Building REST APIs)

  • REST architecture principles
  • Creating RESTful controllers with Spring Boot
  • Request mapping (@GetMapping, @PostMapping, etc.)
  • Path variables and request parameters
  • ResponseEntity and HTTP status codes
  • Validating incoming requests

Spring Data & Databases

  • Introduction to Spring Data JPA
  • Entity classes and repositories
  • CRUD operations using JPA/Hibernate
  • Database migrations with Liquibase/Flyway
  • Connecting to MySQL/PostgreSQL

Spring Security

  • Basics of authentication and authorization
  • User roles and access control with Spring Security
  • Working with JWT (JSON Web Tokens)
  • OAuth2 integration (optional advanced section)

Testing in Spring Boot

  • Unit testing with JUnit & Mockito
  • Mock MVC testing
  • Integration testing for REST APIs


5. Project
  • Building a Full-Stack RESTful Applicationusing Core Java + Spring Boot
  • Features: user authentication, CRUD functionality, database persistence
  • Security integration with JWT
  • Testing the application (unit + integration tests)