🚀 Java Core Concepts

Welcome to the Java Core Concepts repository! This repository is a comprehensive guide that covers all essential Java concepts, from the basics to advanced topics. Whether you are a beginner or an experienced developer looking to brush up on your Java skills, this repository has you covered.

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📌 Table of Contents

1. AA_OOPS_Concepts - Object-Oriented Programming Concepts
2. AB_HowJavaProgramWorks - Java Program Basics
3. AC_Variable - Variables and Primitive Data Types
4. AD_WrapperClasses - Wrapper Classes
5. AE_JavaMemoryManagement - Java Memory Management
6. AF_ClassesInDepth - Classes in Depth
7. AG_Interface - Interfaces in Java
8. AH_JAVA8and9_Interface - Java 8 and 9 Interface Enhancements
9. AI_FunctionalInterface - Functional Interfaces
10. AJ_Reflection - Reflection in Java
11. AK_ExceptionHandling - Exception Handling
12. AL_ControlFlowStatements - Control Flow Statements
13. AM_CollectionFramework - Java Collections Framework

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📝 Module Descriptions

✅ 1. AA_OOPS_Concepts - Object-Oriented Programming Concepts

• Covers the fundamentals of Object-Oriented Programming (OOP) in Java.
• Topics include:
  • Classes and Objects
  • Inheritance, Polymorphism, Abstraction, and Encapsulation
  • Object Relationships (Association, Aggregation, Composition)

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✅ 2. AB_HowJavaProgramWorks - Java Program Basics

• Explains how Java programs work internally.
• Topics include:
  • JVM, JRE, and JDK
  • Execution Flow of Java Programs
  • Class Loaders and Bytecode

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✅ 3. AC_Variable - Variables and Primitive Data Types

• Covers different types of variables in Java.
• Topics include:
  • Primitive Data Types (int, float, double, char, etc.)
  • Variable Scope and Lifetime
  • Constant Variables

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✅ 4. AD_WrapperClasses - Wrapper Classes

• Details on Java Wrapper Classes.
• Topics include:
  • Autoboxing and Unboxing
  • Conversion between primitive types and wrapper objects
  • Utility methods in wrapper classes

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✅ 5. AE_JavaMemoryManagement - Java Memory Management

• Explains how memory is managed in Java.
• Topics include:
  • JVM Memory Structure (Heap, Stack, Method Area)
  • Garbage Collection Mechanism
  • Memory Leaks and Optimization

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✅ 6. AF_ClassesInDepth - Classes in Depth

• Deep dive into Java Classes.
• Topics include:
  • Class Design Principles
  • Inner Classes, Anonymous Classes
  • Static and Non-static Members

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✅ 7. AG_Interface - Interfaces in Java

• Comprehensive guide to Java Interfaces.
• Topics include:
  • Interface Basics
  • Default and Static Methods (Java 8+)
  • Functional Interfaces

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✅ 8. AH_JAVA8and9_Interface - Java 8 and 9 Interface Enhancements

• Details about new features in Interfaces from Java 8 and 9.
• Topics include:
  • Default Methods
  • Private Methods in Interfaces
  • Static Methods

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✅ 9. AI_FunctionalInterface - Functional Interfaces

• All about Functional Interfaces.
• Topics include:
  • @FunctionalInterface Annotation
  • Predefined Functional Interfaces (Predicate, Function, Supplier, Consumer)
  • Lambda Expressions and Method References

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✅ 10. AJ_Reflection - Reflection in Java

• Deep dive into Java Reflection API.
• Topics include:
  • Accessing Classes, Methods, and Fields at Runtime
  • Dynamic Object Creation
  • Annotation Handling with Reflection

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✅ 11. AK_ExceptionHandling - Exception Handling

• Comprehensive guide to Java Exception Handling.
• Topics include:
  • Types of Exceptions (Checked, Unchecked)
  • try-catch, finally, throws, throw
  • Custom Exceptions and Best Practices

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✅ 12. AL_ControlFlowStatements - Control Flow Statements

• Explains various control flow statements in Java.
• Topics include:
  • if, else, switch
  • for, while, do-while loops
  • break, continue, and return statements

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✅ 13. AM_CollectionFramework - Java Collections Framework

• Covers the Java Collections Framework in depth.
• Topics include:
  • List, Set, Map, Queue Interfaces
  • Implementations (ArrayList, HashSet, HashMap, etc.)
  • Stream API (Java 8+)

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🚀 How to Use this Repository

• Each topic is organized as a separate module with well-commented code examples.
• Explore the folders to find detailed explanations and code for each concept.
• Follow the modules in order for a complete understanding of Java Core Concepts.

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⚡ Contributing

Feel free to raise issues or submit pull requests for improvements.

💡 Feedback

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📌 Author

• [Your Name (GitHub Username)] - Comprehensive guide to Java Core Concepts.