Why loops are needed in Java - See It in Action

Why loops are needed

📖 Scenario: Imagine you run a small shop and want to print a thank you message for each customer who bought something today.

🎯 Goal: You will create a program that stores customer names, sets a message, uses a loop to print the message for each customer, and finally shows all messages.

📋 What You'll Learn

Create an array of customer names with exact values

Create a string variable for the thank you message

Use a for loop with variable i to go through the array

Print the thank you message with the customer's name inside the loop

💡 Why This Matters

🌍 Real World

Loops help automate repetitive tasks like sending messages to many customers without writing the same code again and again.

💼 Career

Understanding loops is essential for programming jobs because they make code efficient and easier to maintain when working with lists or collections of data.

1

Create the customer names array

Create a String array called customers with these exact names: "Alice", "Bob", "Charlie"

Java

// Your code here

Need a hint?

Use curly braces to list the names inside the array.

2

Create the thank you message

Create a String variable called message and set it to "Thank you for shopping with us"

Java

String[] customers = {"Alice", "Bob", "Charlie"};
// Your code here

Need a hint?

Use double quotes for the string value.

3

Use a for loop to print messages

Use a for loop with variable i from 0 to customers.length to print the message plus the customer's name inside the loop

Java

String[] customers = {"Alice", "Bob", "Charlie"};
String message = "Thank you for shopping with us";
// Your code here

Need a hint?

Use System.out.println to print inside the loop.

4

Print all thank you messages

Run the program to print all thank you messages for each customer

Java

String[] customers = {"Alice", "Bob", "Charlie"};
String message = "Thank you for shopping with us";
for (int i = 0; i < customers.length; i++) {
    System.out.println(message + ", " + customers[i] + "!");
}
// Your code here

Need a hint?

Make sure your program prints each message on its own line.