If statement in Java - Mini Project: Build & Apply

If Statement Basics in Java

📖 Scenario: You are creating a simple program that checks if a person is old enough to vote. Voting age is 18 years or older.

🎯 Goal: Build a Java program that uses an if statement to check a person's age and print whether they can vote or not.

📋 What You'll Learn

Create an integer variable age with the exact value 20

Create an integer variable votingAge and set it to 18

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

Print "You can vote!" if the condition is true

Print "You cannot vote yet." if the condition is false

💡 Why This Matters

🌍 Real World

Checking age eligibility is common in many apps, like voting, driving, or buying age-restricted items.

💼 Career

Understanding if statements is essential for decision-making in programming jobs.

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

Add the votingAge variable

Add an integer variable called votingAge and set it to 18 inside the main method, below age.

Java

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

Need a hint?

Declare int votingAge = 18; after age.

3

Write the if statement

Write an if statement that checks if age is greater than or equal to votingAge. Inside the if block, write System.out.println("You can vote!");. Add an else block that prints "You cannot vote yet.".

Java

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

Need a hint?

Use if (age >= votingAge) { ... } else { ... } structure.

4

Print the result

Run the program and observe the output. It should print You can vote!.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        int votingAge = 18;
        if (age >= votingAge) {
            System.out.println("You can vote!");
        } else {
            System.out.println("You cannot vote yet.");
        }
    }
}
// Run the program to see the output

Need a hint?

Make sure to run the program and check the console output.