Ternary operator in Java - Mini Project: Build & Apply

Using the Ternary Operator in Java

📖 Scenario: You are creating a simple program that decides if a person is an adult or a minor based on their age.

🎯 Goal: Build a Java program that uses the ternary operator to check if a person is an adult (18 or older) or a minor (under 18) and prints the result.

📋 What You'll Learn

Create an integer variable age with the value 20

Create a string variable status that uses the ternary operator to set 'Adult' if age is 18 or more, otherwise 'Minor'

Print the status variable

💡 Why This Matters

🌍 Real World

Deciding between two options quickly based on a condition is common in apps, like showing messages based on user age.

💼 Career

Understanding the ternary operator helps write concise and readable code, a skill useful for any Java developer.

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 status variable using the ternary operator

Create a string variable called status that uses the ternary operator to set it to "Adult" if age is 18 or more, otherwise "Minor".

Java

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

Need a hint?

Use String status = age >= 18 ? "Adult" : "Minor"; to assign the value.

3

Print the status variable

Write a System.out.println statement to print the value of the status variable.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        String status = age >= 18 ? "Adult" : "Minor";
        
        // Print the status
        // Your code here
    }
}

Need a hint?

Use System.out.println(status); to show the result.

4

Run the program to see the output

Run the program. It should print Adult because the age is 20.

Java

public class Main {
    public static void main(String[] args) {
        int age = 20;
        String status = age >= 18 ? "Adult" : "Minor";
        System.out.println(status);
    }
}

// Run the program to see the output

Need a hint?

The program prints Adult because 20 is greater than or equal to 18.