Core Java

Core Java Topics: Complete Tutorial Index

Welcome to the complete index of Core Java tutorials on D.Tech Academic. Whether you are a beginner starting your Java journey or an experienced developer refreshing specific concepts, this page organizes all tutorials into logical categories for easy navigation.

Every tutorial is written with practical examples, runnable code, and clear explanations. Topics range from Java fundamentals to advanced concepts like multithreading, JDBC, MongoDB CRUD, Stream API, and real-world projects.

Table of Contents

• 1. Java Basics & Fundamentals
• 2. Object-Oriented Programming (OOP)
• 3. this and super Keywords
• 4. String Handling
• 5. Exception Handling
• 6. Multithreading & Concurrency
• 7. Collections Framework
• 8. Input / Output (IO)
• 9. JDBC & Database
• 10. Java Swing (GUI)
• 11. Stream API & Modern Java
• 12. Practice Questions & Programs
• 13. Real-World Projects
• 14. Tools & Miscellaneous

1. Java Basics & Fundamentals

• Java Introduction
• Java Fundamentals
• Java Operators
• What is Type Casting
• Wrapper Class in Java

2. Object-Oriented Programming (OOP)

• Why OOPs
• What is Class
• What is an Object
• How to Access Another Class Property
• What is Method
• What is Constructor
• What is Blocks
• Modifiers in Java
• Polymorphism in Java
• Interface and Abstraction
• Encapsulation
• Inner Class in Java
• Nested Inner Class

3. this and super Keywords

• this Keyword in Java
• super Keyword in Java

4. String Handling

• String Handling in Java
• String Handling Methods with Examples
• Regex Example in Java

5. Exception Handling

• Exception Handling in Java

6. Multithreading & Concurrency

• Multithreading Tutorial
• Wait and Notify in Java
• Thread GUI Example
• Race Condition — Explained With a Real-World Example

7. Collections Framework

• Collection Framework
• ArrayList Tutorial
• Sorting Using Comparable and Comparator
• Java Stream API Tutorial

8. Input / Output (IO)

• IO Tutorial
• Package Tutorial
• JAR File Tutorial in Java
• Encryption and Decryption in Java

9. JDBC & Database

• JDBC Tutorial
• JDBC Procedure Tutorial
• Join Tutorial in JDBC
• MongoDB CRUD Operation Using Java
• Database Insert & Fetch Example
• Pagination Tutorial with Live Data

10. Java Swing (GUI Development)

• Java Swing Tutorial
• Screen Capture in Java Tutorial

11. Stream API & Modern Java

• Java Stream API Tutorial
• Race Condition Explained
• IFSC Bank Detail Finder Using Java
• How to Add a Professional Watermark to Images Using Java

12. Practice Questions & Programs

• Java Data Type Questions
• Operators Questions
• Overloading Questions
• Overriding Questions
• Java Programs
• Array Questions
• Java Random Code
• Print A–Z Pattern in Java

13. Real-World Projects

• IFSC Bank Detail Finder
• Weather Application in Java Swing
• Attendance System App in Java Swing
• Image Watermark Using Java

14. Tools & Miscellaneous

• GitHub Tutorial

15. Design Pattern & Principle

• SOLID Principles
• Design Pattern
• Singleton Pattern
• Factory Pattern
• Abstract Factory Pattern
• Adapter Pattern

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