Conditional (Ternary) Operator in Java

Below is a simple, clear, student-friendly tutorial on the Conditional Operator in Java, perfect for teaching and also for your website / YouTube audience.

✅ Conditional (Ternary) Operator in Java – Easy Tutorial

In Java, the conditional operator is also known as the ternary operator.
It is the shortest way to write an if-else statement.

1. Syntax

 condition ? expression1 : expression2;

✔ How it works?

• If condition is true → expression1 runs

• If condition is false → expression2 runs

That’s it!

2. Example 1: Check if a number is even or odd

int num = 10;
String result = (num % 2 == 0) ? "Even" : "Odd";
System.out.println(result);

✔ Output:

Even

3. Example 2: Find the largest of two numbers

int a = 30;
int b = 20;
int max = (a > b) ? a : b;
System.out.println("Largest = " + max);

✔ Output:

Largest = 30

4. Example 3: Assign pass/fail depending on marks

int marks = 75;
String status = (marks >= 40) ? "Pass" : "Fail";
System.out.println(status);

✔ Output:

Pass

5. Example 4: Nested Ternary Operator (3-way comparison)

int n = 0;
String type = (n > 0) ? "Positive" : (n < 0) ? "Negative" : "Zero";
System.out.println(type);

✔ Output:

Zero

6. Example 5: Shorter replacement of if-else

Traditional if-else:

if(age >= 18) {
 message = "Eligible to Vote";
} else {
 message = "Not Eligible";
}

Using conditional operator:

message = (age >= 18) ? "Eligible to Vote" : "Not Eligible";

7. Why use the Conditional Operator?

8. When NOT to use it?

Don’t use ternary operator when the logic is complex.
Use it only for simple one-line decisions.

📌 Summary

• Conditional Operator = ? :

• Quick replacement of if-else

• Good for small checks

• Avoid in complicated logic