Java Packages Explained (Built-in & User-Defined)
Unlock the power of Java Packages in this complete tutorial! 🚀 In this video, we’ll break down what packages are in Java, why they’re important, and how to use built-in packages like java.lang, java.util, and java.io. You’ll also learn how to create user-defined packages step by step — explained in a simple, beginner-friendly way perfect for ICSE/ISC students and anyone starting out with Java programming.
If you’ve ever wondered “Why do we need packages in Java?” or “How do I organize my Java programs?”, this video has you covered with real-life examples, clear explanations, and coding demos. Whether you’re in Class 9, Class 10, Class 11, or Class 12, or just beginning your Java journey, this video will make the concept of packages easy to understand and apply in your own programs.
👉 What you’ll learn in this tutorial:
1. The definition and importance of packages in Java
2. Difference between built-in vs. user-defined packages
3. How to use java.lang, java.util, and java.io with examples
4. Import statement explained with code
5. How to create your own packages in Java
6. Key benefits of packages and how they make object-oriented programming more modular and organized
This is a must-watch for ICSE and ISC Computer Applications students preparing for exams, as well as beginners who want to strengthen their Java basics.
NOTES AND RESOURCES
Website : https://sshrizvi.notion.site/CISCE-Co...
Notes : https://sshrizvi.notion.site/L034-Int...
Music by
Sergio Prosvirini : https://pixabay.com/users/top-flow-28...
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TIMESTAMPS
0:00 Introduction
1:21 What are Packages?
6:01 Why Packages are needed?
11:03 Let's Play a Game (Organising Classes into Packages)
16:32 Types of Packages
17:28 Built-In Packages
20:44 java.lang Package
25:19 java.util Package
28:29 java.io Package
30:30 Import Statement (How to Import Packages into Java Programs?)
33:58 Code (Built-In Package Example - Date)
38:58 User Defined Packages
43:41 Key Benefits of Packages
49:28 BYE! BYE!
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