This Repo contains Notes and Programs on following topics :

• Java Fundamentals
• Java Object-Oriented Programming
• Java Collections Framework
• I/O & Networking in Java
• Concurrency in Java
• Databases in Java
• Design Patterns in Java
• Data Structures in Java
• Algorithms in Java
• Kotlin - Modern JVM Language
• Android Development (Kotlin)
• Android Libraries (Kotlin)
• Unit Testing in Java/Kotlin

-> All 50 Java Keywords with definitions & examples

-> Java Features, Execution Process & JVM Internals

-> Java Fundamentals & OOPS Concepts

-> Java OOPS - few points to remember

-> Methods of Number, Char, String, Array Classes

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-> Java Generics

-> Java Collections Framework

-> Java Errors and Exception Handling

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-> Java Files and I/O

-> Java Serialization

-> Java Networking

-> Java RegEx & Lambda Expressions

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-> Java Multithreading & Garbage Collection

-> Java Thread Synchronization

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-> Design Patterns & Examples in JDK

-> Creational Patterns: Singleton, Builder, Factory Method, Prototype

-> Structural Patterns

-> Behavioral Patterns

-> Design Patterns Cheat Sheet

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-> Common Data Structures

-> Searching and Sorting Algorithms

-> Tree and Graph Algorithms

-> Concepts of Dynamic Programming

-> Big O Cheat Sheet

-> LeetCode Data Structures & Algorithms Patterns

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• Fastest growing language in Guthub & among the most loved acc. to StackOverflow survey
• Cross-platform, General-purpose, Concise, Safe & fully interoperable with Java
• Primary Official language for Native Android Development since 2019
• Officially supported by Spring Framework, JetBrains Ktor, Eclipse Vert.x (server-side dev)

-> Kotlin Funadamentals and OOP

-> Data Structures in Kotlin

-> Design Patterns in Kotlin

-> Kotlin Overview, Features & Multi-platform Support

-> Java to Kotlin CheatSheets

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• There are 3.6 billion+ active Android devices across 190+ countries
• Every year, Google Play users worldwide download more than 100 billion mobile apps
• Native Apps have better performance, security, access to device hardware and software
• Native apps tends to have less bugs, gets latest features first and run smoother

-> UI Basics - XML layouts, views, event handlers

-> Activity

-> Fragment

-> Recycler View - display scrolling list data using adapter pattern

-> Intent

-> Broadcast Receiver

-> Content Provider

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-> Retrofit - type-safe HTTP client for Java & Android

-> Glide - efficient image loading lib with media decoding, memory & disk caching

-> RoomDB - ORM based SQLite wrapper for fluent db access

-> WorkManager - schedule deferrable, asynchronous tasks

-> ViewModel - store & and manage UI-related data in lifecycle-aware way

-> LiveData - lifecycle-aware observable data holder, ootb data binding support

-> DataBinding - bind UI components to data sources in declarative way

-> RxJava - asynchronous, event-based programs using observable sequences

-> Dagger - static, compile-time dependency injection framework

-> JUnit - developer-side testing on the JVM (unit testing framework)

*-> Mockito - mocking objects in unit tests (test doubling framework)

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-> Comparisons between C, C++, C# and Java Language

-> CheatSheet | C# for Java Developers

-> Java and Python

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[USEFUL INFO - Good Java & Computer Science Books for Reference]

[USEFUL INFO - Great Websites for Learning Java & Computer Science]

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NOTE :

I will keep adding more important codes to this Repo throughout 2023. 

Happy Learning! 😃

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REFERENCES :

This repository contains some codes and images from other authors.
Used for "Nonprofit Educational Purpose".
References are listed in the above link for Books & Websites.

Thanks to those authors! 👍

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