Lecture 11: Ternary Operator Example

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Ternary operator problem statement
Implement the ‘Ternary’ operator where ‘grade’ is 74 and ‘result’ is a String.
Print out ‘Pass’ if result >= 60 and ‘Fail’ otherwise.

Ternary operator solution code
String result = (grade >= 60) ? “Pass” : “Fail”;

Ternary operator output
Pass

Hi there, This is Marius from AlefTav Coding. Today, I will look at Java's Ternary operator, which is a statement that includes conditions. In this lecture you will learn how to 'Implement the Ternary operator where 'grade' is 74 and 'result' is a String. Print out Pass if result >= 60 and Fail otherwise.'

Lecture starting code

public class Lecture11 {
    public static void main(String[] args) {
        int grade = 74;
        // TODO: Implement String, ‘result’  Pass/Fail
        System.out.print(result);
    }
}

So, here I have a class, Lecture11 with a main() method. I declare grade as an int data type and set its value to 74.

The solution code is as follows:

String result = (grade >= 60) ? “Pass” : “Fail”; 

You read this line as: If a student's 'grade' is larger than or equal to 60, then the String, result holds a reference to the text, Pass. Otherwise, grade points to the text, Fail.

Complete solution

public class Lecture11 {
    public static void main(String[] args) {
        int grade = 74;
        String result = (grade >= 60) ? “Pass” : “Fail”;
        System.out.print(result);
    }
}

With my program complete, it can then be run. It produces the output, Pass, because the value, 74 is larger than the condition, greater than or equal to 60.

Ternary operator coding exercise

In today's lecture you learnt a somewhat advanced concept, the Ternary operator. Also, how to implement it in Java. Now, to practise your understanding of it, here is the coding exercise, for you to try as homework.

public class Lecture12 {
    public static void main(String[] args) {
        double wages = 3900;
        // TODO: Implement the *Ternary* operator where *wages* are 3700 and *earnings* are a **String**.
        // TODO:   Print out *Exempt* if *earnings* < 4500 and *Taxable* otherwise.
        System.out.print(earnings);
    }
}

My name is Marius from AlefTav Coding. Till our next meeting, KEEP CODING.

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