Packages

Packages in Java are used to organize related classes and interfaces. They provide a namespace for classes and prevent naming conflicts.

Creating a Package

To declare a package, use the package statement at the top of your Java file:

package com.company.project;

public class MyClass {
  // Class implementation
}

Package Naming Conventions

• Use lowercase letters
• Start with your organization’s domain name in reverse (e.g., com.company.project)
• Package names should be singular
• Use meaningful and descriptive names

Directory Structure

Package structure should mirror directory structure:

• A class in package com.company.project should be in a directory path /com/company/project/

Best Practices

1. Avoid importing classes with the same name from different packages