dhruvansh1 / important-java-concepts

[Complete Java] Notes and Programs for Fundamental & Important Concepts of Java Programming & Development.

Learn Java Programming

This Repo contains Java Programs related to Concepts of :

• 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
• Unit Testing in Java

[1] Java - Fundamentals & OOPS [Done]

NOTES [Useful Info] :

-> 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

PROGRAMS :

Variables & Operators | Control Flow

Classes & Objects | static & this | Inner Classes

Inheritance (is-a) | Association (has-a, part-of)

Overloading | Overriding | super & final

Runtime Polymorphism | instanceof

Abstraction | Interfaces | Encapsulation

Arrays | Strings | Date & Time | Misc

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[2] Java - Generics, Collections & Exception Handling [Done]

NOTES [Useful Info] :

-> Java Generics

-> Java Collections Framework

-> Java Errors and Exception Handling

PROGRAMS :

Generics in Java

Collection Interface (List,Set,Queue)

Map Interface (Map)

Legacy (Enum,Vector,Stack,etc)

Collections Class

Exception Handling

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[3] Java - Files, I/O, Serialization & Networking [Done]

NOTES [Useful Info] :

-> Java Files and I/O

-> Java Serialization

-> Java Networking

PROGRAMS :

Files and I/O

Serialization

Networking (Socket,URL,HTTP,Datagram)

Data Parsing (CSV, JSON & XML)

Streaming in Detail

Advanced Networking (Email,etc)

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[4] Java - Threads & Concurrency [WIP]

NOTES [Useful Info] :

-> Java Multithreading & Garbage Collection

-> Java Thread Synchronization

PROGRAMS :

Multithreading

Thread Synchronization

Classic Concurrency Problems

Operating Systems (CPU Scheduling, Memory Management)

Background Processing

Inter-Process Communication

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[5] Software Design [WIP]

NOTES [Useful Info] :

-> Introduction to Design Patterns

-> Creational Design Patterns

-> Structural Design Patterns

-> Behavioral Design Patterns

-> Design Patterns Cheat Sheet

PROGRAMS :

GOF Design Patterns - Creational

GOF Design Patterns - Structural

GOF Design Patterns - Behavioral

SOLID Design Principles

Design Interview Questions

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[6] Java - Database Concepts [WIP]

JDBC (Java Database Connectivity)

SQL Basics (DDL,DML,DQL)

MySQL (SQL Database)

MongoDB (NoSQL Database)

SQL Intermediate (DCL,TCL)

ORM (Object-Relational Mapping)

Hibernate 5 (ORM Library)

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[7] Java - Developer-Side Testing [WIP]

Basics of Testing in Java

JUnit 5 (Unit Testing Library)

Mockito 2 (Test Doubling Library)

Understanding Test Driven Development

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[8] Java - Software Development [WIP]

Java Best Practices

SE Funadamentals

OOAD Funadamentals

Refactoring & Regression

Behaviour Driven Development

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[9] Java - Other Advanced Topics [WIP]

NOTES [Useful Info] :

-> Java Class Design Basic

-> Java RegEx & Lambda Expressions

PROGRAMS :

Regular Expressions

Lambda Expressions

BigDecimal & BigIntegar

Advanced Data Types (Flatbuffer)

Class Relationships (Design Basics)

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[10] Data Structures & Algorithms [WIP]

NOTES [Useful Info] :

-> Common Data Structures

-> Searching and Sorting Algorithms

-> Tree and Graph Algorithms

-> Concepts of Dynamic Programming

-> Big O Cheat Sheet

PROGRAMS :

Basic Programs | Recursion Programs

Arrays | Strings | Matrix

Linked Lists | Stacks | Queues

BSTs | Heap | Hashing

Searching | Sorting

Tree Traversal | Graph Traversal

Graph Algorithms

Dynamic Programming

EXTERNAL LINKS :

Dedicated Repo For More DS-ALGO Programs - CODING INTERVIEW QUESTIONS

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[11] Technical Diagrams for Developers [WIP]

Database Schema

Entity-Relationship Diagram (ERD)

Unified Modeling Language (UML)

Control-Flow Diagram (CFD)

Data-Flow Diagram (DFD)

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Relation of Java and Others Languages

NOTES [Useful Info] :

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

-> CheatSheet | C# for Java Developers

-> CheatSheet | Kotlin for Java Developers

-> Java and Python

Learn Android App Development

EXTERNAL LINKS :

My Repository for Learning Android App Development Concepts

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Extras

NOTES :

[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 2020. 

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! 👍