Articles

Java Core

Basics

Lifecycle

Data Types

Type Casting

Variables and Scopes

Strings

Math Operations

Arrays

Conditionals

Loops

Stack and Heap

OOP

Basics of OPP

Classes and Objects

Attributes and Methods

Access Modifiers

Static Keyword

Final Keyword

Nested Classes

Packages

More OOP

Object Lifecycle

Methods Chaining

Initializer Block

Inheritance

Abstraction

Encapsulation

Interfaces

Method Overloading and Overriding

Static vs Dynamic Binding

Pass by Value / Pass by Reference

Enums

Record

Exception Handling

Lambda Expressions

Annotations

Modules

Optionals

Dependency Injection

I/O Operations

Files Operations

Generics

Collections

The Iterable and Collection Interfaces

The List Interface

The Queue Interface

The Set Interface

The Map Interface

Concurrency

Threads

Virtual Threads

Java Memory Model

Volatile Keyword

Regular Expressions

Networking sockets

Date and Time

Cryptography

Functional Programming

High Order Functions

Functional Interfaces

Functional Composition

Streams

Testing

Unit Testing

JUnit

TestNG

Integration Testing

REST Assured

JMeter

Behavior Testing

Cucumber-JVM

Mockito

Build Tools

Maven

Gradle

ORM

JDBC

Ebean

Hibernate

JPA

Spring