Enhanced for loop in Java - Mini Project: Build & Apply

Enhanced for loop

📖 Scenario: You are organizing a small library system. You have a list of book titles that you want to display one by one to the user.

🎯 Goal: Learn how to use the enhanced for loop in Java to go through each item in a list and print it.

📋 What You'll Learn

Create a String array called books with exact titles

Create an integer variable count to count books

Use an enhanced for loop with variable book to iterate over books

Print each book title and the total count of books

💡 Why This Matters

🌍 Real World

Libraries, bookstores, or any system that manages lists of items can use enhanced for loops to process and display data easily.

💼 Career

Understanding enhanced for loops is essential for Java developers to write clean and readable code when working with collections or arrays.

1

Create the list of books

Create a String array called books with these exact titles: "Java Basics", "Data Structures", "Algorithms", "Design Patterns".

Java

# Create the String array books with the given titles

Need a hint?

Use curly braces {} to list the book titles inside the array.

2

Add a counter variable

Add an integer variable called count and set it to 0 inside the main method, after the books array.

Java

public class Main {
    public static void main(String[] args) {
        String[] books = {"Java Basics", "Data Structures", "Algorithms", "Design Patterns"};
        // Create an int variable count and set it to 0
    }
}

Need a hint?

Use int count = 0; to start counting from zero.

3

Use enhanced for loop to count books

Use an enhanced for loop with variable book to iterate over the books array. Inside the loop, increase count by 1.

Java

public class Main {
    public static void main(String[] args) {
        String[] books = {"Java Basics", "Data Structures", "Algorithms", "Design Patterns"};
        int count = 0;
        // Use enhanced for loop to iterate over books and increment count
    }
}

Need a hint?

Use for (String book : books) to loop through each book.

4

Print each book and total count

Inside the enhanced for loop, add a System.out.println(book); statement to print each book title. After the loop, print the total number of books using System.out.println("Total books: " + count);.

Java

public class Main {
    public static void main(String[] args) {
        String[] books = {"Java Basics", "Data Structures", "Algorithms", "Design Patterns"};
        int count = 0;
        for (String book : books) {
            // Print the book title here
            count++;
        }
        // Print the total count here
    }
}

Need a hint?

Use System.out.println(book); inside the loop and print the count after the loop.