Packages in Java | Types of Packages in Java | Creative Java Programming

Published: 05 November 2024
on channel: Creative Java Programming

151

Packages in Java | Types of Packages in Java | Creative Java Programming

Hi everyone! Welcome to Creative Java Programming. Today, we’ll learn about packages in Java and see how to create them in Eclipse. Let’s get started!"

In this video, I will discuss the following topics:
What are Java Packages?
Types of Java Packages
How to create a package in Java?
Adding Classes to a Package
Using the Package in Another Class
How to Import Java Packages?
Naming Tips

Sample Java Program to demonstrate the Java Packages
1. What is a Package?
Packages are nothing but folders created in java to store your java programs in organize manner.
Why Use Packages?
Keeps Code Organized: Groups related code in one place.
Avoids Conflicts: Different packages can have classes with the same name.
Controls Access: Packages help manage what parts of the code other classes can see.
2. Types of Packages
Java has two main types of packages:
Built-in Packages: These are ready-to-use packages like java.util.
User-defined Packages: We create these ourselves to organize our code.
3. Creating a Package in Eclipse
Step-by-Step in Eclipse:
Right-click the src folder, go to New, then select Package.
Type the package name, like p1 , then click Finish.
Eclipse will now show your new package.
4. Adding Classes to a Package
Demo in Eclipse: Add a class in the package.
Right-click on the package , go to New , select Class.
Name the class, like A, and click Finish.
Show that the package name appears at the top of your class file.
5. Using the Package in Another Class
Demo: Import and use a class from your package in another file.
"To use A in a different class, add import p1.A; at the top."
6. Naming Tips:
Use lowercase names like p1.

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