How to Use Java One Line if Statement?

In Java, an if statement allows users to execute the code block depending on a particular condition. The one-line if statement, also known as the ternary operator, is a concise way to write an if statement that executes one line of code based on a condition. The one-line if statement is a useful tool for writing compact and concise code in Java.

This guide will offer to use the one-line if statement with practical implementation.

How to Use Java One Line if Statement?

The one-line if statement can be used as shorthand for simple if-else statements where only a single statement is executed in each case.

Syntax

The syntax for a one-line if statement is as follows:

condition_statement? expression1: expression2

In the above syntax, first, the “condition_statement” is computed, and if it is true, the “expression1” is run; otherwise, “expression2” is run.

Example: 1

An example is considered to assign a particular number to the variable and check if the value of the variable is less or greater than the number. Here is an example of a one-line if statement:

class marks{
public static void main(String[] args) {
int num = 5;
String message = (num < 10)? "Number is less than 10": "Number is greater than or equal to 10";
System.out.println(message);
}
}

The description of the above code is mentioned below:

First, assign a numeric number 5 to the num variable.
After that, check if the value of the variable “num” is less than ten.
If the above condition is true, the message “Number is less than 10” is assigned to the message variable.
Otherwise, the message “Number is greater than or equal to 10” is assigned to the message variable.

The output of the above code shows that “Number is less than 10”.

Example: 2

Here is another example that shows how a one-line if statement can be used to assign a value to a variable based on a condition:

class marks{
public static void main(String[] args) {
int num = 7;
int result = (num > 5)? 10: 5;
System.out.println(result);
}
}

The explanation of the above snippet is mentioned below:

Initially, the number 7 is assigned to the num variable.
After that, check if the value of the num variable is greater than 5.
If the above condition is true, the value 10 is assigned to the result variable, and if it is not, the value 5 is assigned to the result variable.

The output shows that the above condition is true and the value 10 has been displayed.

Conclusion

In Java, the one-line if statement is a compact way of executing an exact single line based on the specific condition. In addition, it simplifies and clarifies the code. The syntax of the one-line if statement is easy to understand and can be used in various scenarios where only a single statement is executed based on a condition. However, it should be used judiciously, as using it excessively can make the code harder to read and understand.

How to Use Java One Line if Statement?