Why conditional statements are needed in Java - See It in Action

Why conditional statements are needed

📖 Scenario: Imagine you are creating a simple program that helps a store decide if a customer gets a discount based on their age.

🎯 Goal: You will build a small Java program that uses conditional statements to check a customer's age and decide if they get a discount.

📋 What You'll Learn

Create an integer variable called age with the value 20

Create an integer variable called discountAge with the value 18

Use an if statement to check if age is greater than or equal to discountAge

Print "Discount applied" if the condition is true, otherwise print "No discount"

💡 Why This Matters

🌍 Real World

Stores and businesses often give discounts based on age or other conditions. Conditional statements help automate these decisions.

💼 Career

Understanding conditional statements is essential for any programming job because they control how software reacts to different inputs and situations.

1

Create the age variable

Create an integer variable called age and set it to 20.

Java

// Your code here

Need a hint?

Use int age = 20; inside the main method.

2

Create the discountAge variable

Create an integer variable called discountAge and set it to 18.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        // Your code here
    }
}

Need a hint?

Use int discountAge = 18; inside the main method after age.

3

Add the if statement to check age

Use an if statement with the condition age >= discountAge to check if the customer gets a discount.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        int discountAge = 18;
        // Your code here
    }
}

Need a hint?

Use if (age >= discountAge) { ... } else { ... } to decide what to print.

4

Print the result

Run the program and print the output. The program should print Discount applied because age is 20 and meets the condition.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        int discountAge = 18;
        if (age >= discountAge) {
            System.out.println("Discount applied");
        } else {
            System.out.println("No discount");
        }
    }
}
// Run the program to see the output

Need a hint?

Run the program to see the message printed in the console.