Java Core Training & OOPs Mastery | Samyak Computer Classes
1. The Core Architecture (JVM, JRE, JDK)
Before you write a line of code, you have to understand the "Big Three" that allow Java to run everywhere.
JVM (Java Virtual Machine): The "engine" that runs the code. It converts Java bytecode into machine language.
JRE (Java Runtime Environment): A package that includes the JVM plus the standard libraries needed to run Java apps.
JDK (Java Development Kit): The full toolkit for developers. It includes the JRE plus tools like the compiler and debugger.
2. Object-Oriented Programming (OOP)
Java is built on the philosophy that everything is an "object." There are four main pillars you must master:
Inheritance: Allowing one class to acquire the properties of another (reusability).
Polymorphism: The ability of an object to take many forms (e.g., a Shape can be a Circle or a Square).
Encapsulation: Wrapping data (variables) and code (methods) together as a single unit to keep data safe.
Abstraction: Hiding complex implementation details and showing only the necessary features (using).
3. The "Must-Know" Fundamentals
Beyond OOP, Core Java involves these functional building blocks:
Data Types & Variables: Understanding primitives (like `int`, `float`, `boolean`) vs. Objects (like `String`, `Array`, `List`).
Control Flow: Using if, else, and loops (forto make decisions.
Exception Handling: Using try-catch blocks to prevent your program from crashing when something goes wrong.
Collections Framework: The specialized tools used to store groups of data, such as ArrayList,
4. Advanced "Core" Concepts
As you get deeper, you'll encounter these powerful features:
Multithreading: Allowing a program to do multiple things at once.
Input/Output (I/O): Reading from or writing to files.
Generics: Making your code safer by ensuring you're using the right data types in collections.
Lambda Expressions (Java 8+): A way to write cleaner, more functional-style code.
Core Java vs. Advanced Java
Feature: Core Java (SE), Advanced Java (EE) Focus: Fundamentals, Logic, OOP, Web, Enterprise, Server-side Architecture: Single-tier (Standalone), Multi-tier (Client-Server) Libraries: HibernateExample: Simple Calculator, Desktop App, E-commerce Website, Banking System Export to Sheets
Are you just starting out with your first "Hello World," or are you looking to dive into a specific topic like multithreading or collections?
Java Core online course helps you master coding. Join our core java online classes or find a core java institute near me to check fees.
