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Day-01-What is Java.png
Day-01-What is Java.png
 
 
Day-02-History and Evolution of Java.png
Day-02-History and Evolution of Java.png
 
 
Day-03-Flow of Java Program.png
Day-03-Flow of Java Program.png
 
 
Day-04-Portability of Java.png
Day-04-Portability of Java.png
 
 
Day-05-Portability of Java.png
Day-05-Portability of Java.png
 
 
Day-06-Memory architecture of a computer.png
Day-06-Memory architecture of a computer.png
 
 
Day-07-Data Types and Variable.png
Day-07-Data Types and Variable.png
 
 
Day-08-Type Casting in Java.png
Day-08-Type Casting in Java.png
 
 
Day-09-Hard Coding and Soft Coding in Java.png
Day-09-Hard Coding and Soft Coding in Java.png
 
 
Day-10-Methods in Java.png
Day-10-Methods in Java.png
 
 
Day-11-Method Overloading in Java.png
Day-11-Method Overloading in Java.png
 
 
Day-12-OOP-Overview-in-Java.png
Day-12-OOP-Overview-in-Java.png
 
 
Day-13-Constructor Overview in Java.png
Day-13-Constructor Overview in Java.png
 
 
Day-14-Local-and-Instant-Variables-in-Java.png
Day-14-Local-and-Instant-Variables-in-Java.png
 
 
Day-15-Decision making statements in Java.png
Day-15-Decision making statements in Java.png
 
 
Day-16-Loops in Java.png
Day-16-Loops in Java.png
 
 
Day-17-Arrays Overview in Java.png
Day-17-Arrays Overview in Java.png
 
 
Day-18-1-D Arrays in Java.png
Day-18-1-D Arrays in Java.png
 
 
Day-19-2D-Arrays in Java.png
Day-19-2D-Arrays in Java.png
 
 
Day-20-3D Arrays in Java.png
Day-20-3D Arrays in Java.png
 
 
Day-21-3D Zagged Array in Java.png
Day-21-3D Zagged Array in Java.png
 
 
Day-22-01-String class in Java.png
Day-22-01-String class in Java.png
 
 
Day-22-02-Intern method in String.png
Day-22-02-Intern method in String.png
 
 
Day-22-03-String addresses comparison (==), String Values comparison (.equals).png
Day-22-03-String addresses comparison (==), String Values comparison (.equals).png
 
 
Day-22-04-StringBuffer in Java.png
Day-22-04-StringBuffer in Java.png
 
 
Day-22-05-StringBuilder in Java.png
Day-22-05-StringBuilder in Java.png
 
 
Day-22-06-String Class vs StringBuffer vs StringBuilder.png
Day-22-06-String Class vs StringBuffer vs StringBuilder.png
 
 
Day-22-Strings Overview in Java.png
Day-22-Strings Overview in Java.png
 
 
Day-23-Static Keyword in Java.png
Day-23-Static Keyword in Java.png
 
 
Day-24-Local vs Instant vs Static Variables in Java.png
Day-24-Local vs Instant vs Static Variables in Java.png
 
 
Day-25-Static method vs Main method in Java.png
Day-25-Static method vs Main method in Java.png
 
 
Day-26-Valid syntax of Java.png
Day-26-Valid syntax of Java.png
 
 
Day-27-Encapsulation in Java.png
Day-27-Encapsulation in Java.png
 
 
Day-28-Encapsulation using Constructor in Java.png
Day-28-Encapsulation using Constructor in Java.png
 
 
Day-29-Inheritance Overview in Java.png
Day-29-Inheritance Overview in Java.png
 
 
Day-30-Single Inheritance.png
Day-30-Single Inheritance.png
 
 
Day-31-Multilevel Inheritance.png
Day-31-Multilevel Inheritance.png
 
 
Day-32-Hierarchical Inheritance.png
Day-32-Hierarchical Inheritance.png
 
 
Day-33-Hybrid Inheritance.png
Day-33-Hybrid Inheritance.png
 
 
Day-34-Diamond Problem in Multiple inheritance.png
Day-34-Diamond Problem in Multiple inheritance.png
 
 
Day-35-Types of methods in Inheritance.png
Day-35-Types of methods in Inheritance.png
 
 
Day-36-Constructure Chaining in Java.png
Day-36-Constructure Chaining in Java.png
 
 
Day-37-Constructor Overloading in Java.png
Day-37-Constructor Overloading in Java.png
 
 
Day-38-Local Chaining in Java.png
Day-38-Local Chaining in Java.png
 
 
Day-39-super keyword in Java.png
Day-39-super keyword in Java.png
 
 
Day-40-Polymorphism in Java.png
Day-40-Polymorphism in Java.png
 
 
Day-41-Method Hiding in Java.png
Day-41-Method Hiding in Java.png
 
 
Day-42-Access Specifires in Java.png
Day-42-Access Specifires in Java.png
 
 
Day-43-Rules of method overriding in Java.png
Day-43-Rules of method overriding in Java.png
 
 
Day-44-Has-A Relationship.png
Day-44-Has-A Relationship.png
 
 
Day-45-Limitation of Parent Typre Reference in Java.png
Day-45-Limitation of Parent Typre Reference in Java.png
 
 
Day-46-Abstraction in Java.png
Day-46-Abstraction in Java.png
 
 
Day-47-Interface Concept and marker Interface in Java.png
Day-47-Interface Concept and marker Interface in Java.png
 
 
README.md
README.md
 
 

README.md

Core Java Handwritten Learning Notes

Welcome to the Core Java module of the Java Handwritten Learning Notes repository.

This module contains a structured collection of handwritten learning note images covering Core Java concepts from beginner to intermediate level. Each topic is organized day-wise to provide a systematic learning experience, making it suitable for concept understanding, revision, and technical interview preparation.

Module Overview

The handwritten notes included in this module cover fundamental Java programming concepts, object-oriented programming principles, arrays, strings, inheritance, polymorphism, abstraction, interfaces, and many other essential Core Java topics.

The notes are designed to provide concise visual explanations that help learners quickly understand important concepts and revise them effectively.

Module Statistics

Category Details
Module Core Java
Learning Days 47
Total Images 53
Repository Folder 01-Core-Java
Learning Level Beginner to Intermediate

Topics Covered

Day Topic
Day 01 What is Java
Day 02 History and Evolution of Java
Day 03 Flow of Java Program
Day 04 Portability of Java
Day 05 Portability of Java
Day 06 Memory Architecture of a Computer
Day 07 Data Types and Variable
Day 08 Type Casting in Java
Day 09 Hard Coding and Soft Coding in Java
Day 10 Methods in Java
Day 11 Method Overloading in Java
Day 12 OOP Overview in Java
Day 13 Constructor Overview in Java
Day 14 Local and Instant Variables in Java
Day 15 Decision Making Statements in Java
Day 16 Loops in Java
Day 17 Arrays Overview in Java
Day 18 One-Dimensional Arrays
Day 19 Two-Dimensional Arrays
Day 20 Three-Dimensional Arrays
Day 21 Three-Dimensional Jagged Array
Day 22 String Class
Day 22 Intern Method
Day 22 String Comparison
Day 22 StringBuffer
Day 22 StringBuilder
Day 22 String Class vs StringBuffer vs StringBuilder
Day 22 Strings Overview
Day 23 Static Keyword
Day 24 Local vs Instance vs Static Variables
Day 25 Static Method vs Main Method
Day 26 Valid Syntax of Java
Day 27 Encapsulation
Day 28 Encapsulation using Constructor
Day 29 Inheritance Overview
Day 30 Single Inheritance
Day 31 Multilevel Inheritance
Day 32 Hierarchical Inheritance
Day 33 Hybrid Inheritance
Day 34 Diamond Problem in Multiple Inheritance
Day 35 Types of Methods in Inheritance
Day 36 Constructor Chaining
Day 37 Constructor Overloading
Day 38 Local Chaining
Day 39 Super Keyword
Day 40 Polymorphism
Day 41 Method Hiding
Day 42 Access Specifiers
Day 43 Rules of Method Overriding
Day 44 Has-A Relationship
Day 45 Limitation of Parent Type Reference
Day 46 Abstraction
Day 47 Interface Concept and Marker Interface

Repository Structure

01-Core-Java
│
├── Day-01-What is Java.png
├── Day-02-History and Evolution of Java.png
├── ...
├── Day-47-Interface Concept and Marker Interface.png
└── README.md

Learning Outcomes

After completing this module, learners will be able to understand:

  • Java Fundamentals
  • Java Program Execution Flow
  • Memory Architecture
  • Variables and Data Types
  • Type Casting
  • Methods and Method Overloading
  • Object-Oriented Programming
  • Constructors
  • Arrays
  • String Handling
  • Static Members
  • Encapsulation
  • Inheritance
  • Polymorphism
  • Abstraction
  • Interfaces
  • Core Java Interview Concepts

How to Use

  • Follow the handwritten notes sequentially from Day 01 to Day 47.
  • Study one topic at a time.
  • Use the notes for concept understanding and quick revision.
  • Revisit important topics before interviews.

Who Can Benefit?

  • Java Beginners
  • College Students
  • Self-Learners
  • Java Developers
  • Software Engineers
  • Technical Interview Aspirants

Support

If this repository helps you in your learning journey, interview preparation, or future reference, please consider giving it a Star ⭐.

Your support is greatly appreciated and motivates me to continue creating high-quality educational repositories.

Conclusion

Thank you for exploring the Core Java Handwritten Learning Notes.

Happy Learning and Keep Coding!