Java Programming Session 6 | Packages in Java, Import Statement & Naming Conventions

Published: 24 August 2026
on channel: Abhishek Paul

🚀 Java Programming Complete Course – Session 6

Welcome to Session 6 of our Java Programming Series!

In this session, we explore one of the most important concepts in Java development – Packages. Learn how Java organizes classes and interfaces, how to create your own packages, use the import statement, and follow industry-standard naming conventions.

📚 Topics Covered:

✅ Understanding Packages in Java
• What is a Package?
• Package Structure
• Classes and Interfaces inside Packages

✅ Scanner Class Revision
• next()
• nextInt()
• nextLine()

✅ Java Installation Structure
• JDK Components
• javac Compiler
• java Executor

✅ Java Naming Conventions
• Package Naming Rules
• Class Naming Standards
• Function Naming (Camel Case)

✅ Creating Your Own Package
• Creating Package Folders
• Writing Package Declaration
• Public Classes and Functions
• Compiling Package Classes

✅ Import Statement
• Importing Classes from Packages
• Accessing Package Functions
• Creating Objects from Imported Classes

✅ Public Classes and Interfaces
• Rules for Public Classes
• Source File Naming Rules

✅ Practical Package Example
• Package Creation
• Class Access
• Function Calling Across Packages

🎯 Homework Project

Create a Package Structure:

📂 maths
┣ 📂 simple
┃ ┗ SimpleCalculations.java
┃ • add()
┃ • sub()
┃ • mul()
┃ • div()
┣ 📂 complex
┃ ┣ ComplexCalculations.java
┃ ┃ • fact()
┃ ┃ • pow()
┃ ┗ OtherCalculations.java (Interface)
┃ • square()
┃ • cube()

Create an external class:
✔ MathsCalculations.java
✔ Import package classes
✔ Access all functions

🎯 Ideal For:
✔ BCA Students
✔ MCA Students
✔ B.Tech CSE Students
✔ Java Beginners
✔ Placement Preparation
✔ Internship Training Programs

💻 Software Used:
• JDK (Java Development Kit)
• VS Code
• Eclipse IDE
• IntelliJ IDEA

📌 Upcoming Sessions:
• Constructors
• Exception Handling
• Collections Framework
• File Handling
• JDBC
• Multithreading
• GUI Programming
• Spring Boot Basics
• Real-World Java Projects

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