Core Java

Java Basics

Getting Started with Java

Syntax and Data Types

Variables and Constants

Operators

Control Flow

Conditional Statements

Loops and Iteration

Arrays

Classes and Objects

Classes and Constructors

Methods

Encapsulation

OOP Principles

Inheritance and Polymorphism

Interfaces

Object Class Methods

Working with Strings

String Basics and Operations

String Manipulation

Wrapper Classes

Exception Handling

Exception Handling Basics

Advanced Exception Handling

Collections Framework

Collections and Lists

Sets

Queues and Deques

Maps

Collection Utilities

Generics

Generics Basics

Advanced Generics

Multithreading

Thread Fundamentals

Synchronization

Executor Framework

Concurrency Utilities

Input and Output

I/O Streams

File Handling

Serialization

Functional Programming

Inner Classes

Lambda Expressions

Functional Interfaces

Stream API Basics

Stream Processing

Stream Terminal Operations

Collectors and Streams

Optional

Date Time and Enums

Date and Time API

Enums

Advanced Topics

Reflection

Annotations

Regular Expressions

Utility Classes and Memory

Packages and Modules