Ternary Operator in Java
Ternary operator in Java is used as a replacement for the if-then-else statement. It simulates this behavior - If expression 1 is true, variable = expression2 else variable = expression3. It is the only operator in Java that takes three arguments.
Operators in Java are symbols that instruct the compiler to perform a specific operation. Just like other operators like Arithmetic, Bitwise, Unary, etc, Ternary Operator adds up to the list of operators available in Java.
- If statement is too much code
We usually write conditional statements in our codes every now and then, as they play an important role in deciding some specific path of the workflow or often decide between multiple actions based on the condition.
Ternary operator allows us to translate multiple lines of code of an ‘if-else’ block into a single line. As a clean code developer, you might always question, if it’s a one liner if-else, is it readable? Yes, it’s readable and structured more than an if-else block. Let’s see how it really does that with its syntax.
Condition: It represents the condition that is written in an if statement.
Expression1: This expression will be stored in the Variable if the condition turns out to be true.
Expression2: This expression will be stored in the Variable if the condition turns out to be false.
Variable: It stores the value returned by either expression.
Flowchart of Ternary Operation
The above piece of code can be reduced drastically to just one line using the Ternary operator in Java:
When to Use a Ternary Operator in Java?
- The Ternary operator in Java is a concise alternative to writing conditional statements, serving as a shorthand for if-else implementations.
- It's important to store the value in a variable when using the Ternary operator, as each expression within the operator returns a value.
- Storing the result in a variable becomes necessary when the conditional statement is intended to modify a specific variable or return a specific data type.
In such cases, the Ternary operator is the preferred choice. For example,
The above code can be done in two lines using ternary operator as shown below:
Nested Ternary Operator
The nested ternary operator is an extension of the ternary operator in Java, allowing for multiple levels of conditionals within a single expression. It provides a compact way to handle complex conditional logic.
Here's a short code example:
- In this example, the nested ternary operator is used to determine the value of the result variable based on the value of x.
- The outer condition (x > 0) checks if x is greater than zero.
- If true, it proceeds to the inner ternary operator (x < 10), which checks if x is less than ten. I
- f true, the result is "x is less than 10", otherwise it is "x is greater than or equal to 10". If the outer condition is false, the result is "x is less than or equal to 0".
Advantages of Ternary Operator
- Conciseness: It condenses the conditional logic into a single line, improving code readability and reducing clutter.
- Simplicity: It eliminates the need for writing separate if and else blocks, resulting in cleaner and more straightforward code.
- Expressiveness: It makes the code more self-explanatory and easier to understand at a glance.
- Code Efficiency: It eliminates the need to execute redundant if-else checks, as the Ternary operator evaluates the condition and returns the appropriate value directly, reducing unnecessary branching in the code.
- The Ternary operator in Java (condition ? expression1 : expression2) enhances code readability and quality by providing a concise shorthand for conditional statements.
- It involves three expressions, where the condition is evaluated, and based on the result, either expression1 or expression2 is chosen.
- The Ternary operator simplifies conditional assignments in a single line, improving code efficiency and readability.
- While the Ternary operator is a powerful tool, it's important to consider its usage alongside if-else statements, especially for handling nested conditions and more complex scenarios.