# What Does Percent Sign (%) Mean in Java?

In Java, the percent sign (%) is used as the modulus operator. It returns the remainder when one number is divided by another.

## What is modulus operator in Java?

Modulus operator returns the remainder of division between two numbers.

The modulus operator in Java is represented by the percent sign (%). It is used to find the remainder when one number is divided by another.

For example, if you use the modulus operator to divide 7 by 3, the remainder would be 1. So, you would write “7 % 3” and the result would be 1.

It can also be used to check if a number is odd or even. If you use the modulus operator to divide a number by 2, if the remainder is 0, it means the number is even, if the remainder is 1, it means the number is odd.

Another example, if you want to check whether a number is divisible by another number or not, you can use the modulus operator. If the result of the modulus operation is 0, that means the number is divisible by the other number.

## How to add percentage symbol in Java?

To insert a percentage in Java, you can use the concatenation operator (+) to combine the percentage symbol with a numerical value.

Here’s an example:

``````double percentage = 0.25;
System.out.println(percentage + "%");
``````

This code will print “0.25%” to the console.

Another way is to use String.format() method which is used to format the string and it can be used to add the percentage symbol. Here’s an example:

``````double percentage = 0.25;
System.out.println(String.format("%.2f%%", percentage));
``````

This code will also print “0.25%” to the console, the %.2f is used to format the double to 2 decimal points and then % is used to add the percentage symbol.

You can also use DecimalFormat class which is used to format decimal numbers, here is an example:

``````double percentage = 0.25;
DecimalFormat df = new DecimalFormat("#.##%");
System.out.println(df.format(percentage));
``````

This code will also print “25.00%” to the console, the #.##% is used to format the double to 2 decimal points and then % is used to add the percentage symbol.