Creating packages in Java - Try It Yourself

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Creating packages

📖 Scenario: You are organizing a small Java project for a bookstore. You want to keep your code neat by using packages.

🎯 Goal: Create a package named bookstore and place a class Book inside it. Then create another class Store in the default package that uses the Book class.

📋 What You'll Learn

Create a package named bookstore

Create a class Book inside the bookstore package

Add a String field title and a constructor to Book

Create a class Store in the default package

In Store, create a main method that creates a Book object

Print the book's title in the main method

💡 Why This Matters

🌍 Real World

Packages help keep Java projects organized, especially when many classes are involved. This is common in real software projects.

💼 Career

Understanding packages is essential for Java developers to write clean, maintainable, and scalable code.

1

Create the Book class inside the bookstore package

Create a package named bookstore. Inside it, create a public class called Book with a public String field named title and a constructor that takes a String parameter called title and assigns it to the field.

Java

package bookstore;

// Your code here

💡 Need a hint?

Start with package bookstore; at the top. Then define the class and constructor.

2

Create the Store class with a main method

Create a public class called Store in the default package. Inside it, create a public static void main(String[] args) method.

Java

// Your code here

💡 Need a hint?

Define the Store class and add the main method inside it.

3

Import the Book class and create a Book object

In the Store class, add an import statement for bookstore.Book. Inside the main method, create a Book object named myBook with the title "Java Basics".

Java

import bookstore.Book;

public class Store {
    public static void main(String[] args) {
        // Your code here
    }
}

💡 Need a hint?

Use import bookstore.Book; at the top of Store. Then create the object inside main.

4

Print the book's title

In the main method of Store, add a line to print the title of the myBook object using System.out.println.

Java

import bookstore.Book;

public class Store {
    public static void main(String[] args) {
        Book myBook = new Book("Java Basics");
        // Your code here
    }
}

💡 Need a hint?

Use System.out.println(myBook.title); to print the title.