How to Use Ternary Operator in Java?

ternary operator in java banner

As we continue to progress in developing and sharpening our Java skills, it’s good to do a recap on the little things that make Java the best programming language in the world! And we’re not being melodramatic here, but Java is SIMPLY the best thing that ever happened during the transition from the 20th to the 21st Century. Okay, maybe we’re being just a tad bit emotional. There was also Jennifer Lopez who gave us hit after hit!

That being said, today we wanted to talk about something a little special about Java. And that’s how to use the ternary operator. We’re going to start with the basics and build on up all the way to the peak. You can also read about the best online java compiler and runner to make sure your coding is always on point. So let’s get started!

So What Is a Conditional Operator?

A conditional operator is one that utilizes three operands in order to determine whether the condition is true and the value in case the condition is false.

The ‘If’ Statement

The first operand if can be referred to as a boolean expression; that means that if the expression is true, then the second operand value will be returned; otherwise the third operand is consequently returned. Let’s elaborate more on this. The if statement executes a given action based on a specific condition. This is usually common in multiple cases during the write up of programming languages. For example, here is a basic outlook on how it works.

if condition {
execute this code
}

One important thing to note is that the if statement always goes hand in hand with the else statement. That’s because the else statement is used to highlight the second portion of the code that you would like to define.

For instance, take a look at this example here:

if ('John' === name) {
salutation = "Welcome back John";
} else {
salutation = "Welcome " + name;
}

The code above, in this case, highlights the name John on the computer screen whenever the programmer or user types John and executes the program. Otherwise, in different circumstances, it will return ‘Welcome’ + name according to whatever letters are typed in at the name position of the code.

A Shorter Way of Writing the If Statement

Using Java script is amazing because it gives you the opportunity to write the if statement in an alternative way, in cases where the true and false conditions are able to assign other values to a similar variable. This shortened method comprises of omitting the word ‘if’ and further eliminating the braces that surround the blocks. We further move the value being set for both the true and false conditions to the front side of the singular statement. This new style can then be added to the original statement itself.

For example:

variable = (condition) ? true-value : false-value;

Now, if we go back to our initial example of Welcome John, we can be able to simplify it in an above-mentioned way.

Salutation= ('John'=== name) ? "Welcome back John" : "Welcome " + name;

Java Script assesses this statement in the same way it assesses the first statement we used in the previous example. However, this statement carries more weight because it actually provides more information on exactly what the statement will be executing. The code can further run faster and more efficiently than we would if we had written it using the longer method. This is what is known as a ternary operator.

http://marauders-map-indexed.tumblr.com/post/128072563667/programming-terms-if-statement-variable


So What Is a Ternary Operator?

A ternary operator in Java is, therefore, a conditional operator that has been shortened. It can be used as a perfect replacement for the ‘if, else and then’ operands normally utilized in Java. So in what situations do we utilise ternary operators?

1. When you want to assign multiple values to a single variable

You can use this code to especially avoid the use of repetition or extremely long statements. For example, here is a code using the if statements:

var answer;
if (x == y) {
if (x == z) {
answer = "all are equal";
} else {
answer = "x and y are equal";
}
} else {
if (x== z) {
answer = "x and z are equal";
} else {
if (y == z) {
answer = "y and z are equal";
} else {
answer = "all are different";
}
}
}

The code above assigns the 5 possible circumstances to the single variable. Using a ternary operator, we can shorten this to:

var answer = (x == y) ? ((x == z) ? "all are equal" :
"x and y are equal") : (x == z) ? "x and z are equal" : (y == z) ?
"y and z are equal" : "all are different";

This code can only be used in the case that varied conditions that are being tested have been assigned different values but for the same variable.

Take a look at our Java syntax cheat sheet and feel free to consult it any time!

2. Can be used in boolean expressions

For example, have a look at the boolean expression below:

boolean is Excited = true;
String mood = "";
if (is Excited == true)
{
mood = "I'm Happy!";
}
else
{
mood = "I'm Bored!";
}

Here is the ternary code for the above statement:

boolean is Excited = true;
String mood = (is Excited == true)?"I'm Happy!":"I'm Bored!";

Making Use of Ternary Operator in Java

The ternary operator is much simpler and easier to write. However, in terms of readability, the if statement is much easier to understand when skimming through; especially for first-time users. Ternary operators are therefore helpful when it comes to shortening code for faster writing and more proficient time-saving for programmers. It further helps to minimize the chances of errors in the programmer’s code. Even more helpful is that it makes it easier to search for errors whenever their code fails to run in case of errors. Java can be easy and interesting, as it appears.

To learn more on Ternary Operators in Java, just get in touch with us. We will help you further in learning on ternary operators and how to utilize them in given codes. You can also get expert tutoring in your Java operating assignments.

Need help with a ternary operator in Java? LSet’s get started with you today!