Java string format percent symbol

How do I escape / display percent sign in printf statement?

You have a problem displaying the % sign when you want to print a number in percentage format using the printf() method. Because the % sign is use as a prefix of format specifiers, you need to escape it if you want to display the % sign as part of the output string.

To escape the percent sign ( % ) you need to write it twice, like %% . It will print out a single % sign as part of your printf() method output. Let see an example in the code snippet below:

package org.kodejava.lang; public class EscapePercentSignExample < public static void main(String[] args) < String format = "The current bank interest rate is %6.2f%%.%n"; System.out.printf(format, 10f); >> 

In the code snippet above we use the following format %6.2f%%.%n which can be explained as:

• %6.2f format the number ( 10f ) as six characters in width, right justified, with two places after decimal point. The f conversion character means it accept a float value.
• %% will escape the % sign and print it as part of the output.
• %n will print out a new line character.

When you execute the code, it will print:

The current bank interest rate is 10.00%. 

A programmer, recreational runner and diver, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕ every little bit helps, thank you 🙏

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Escape percent sign in String’s format method in java

In this post, we will see how to escape Percent sign in String’s format() method in java.

Escape Percent Sign in String’s Format Method in Java

String’s format() method uses percent sign( % ) as prefix of format specifier.
For example:
To use number in String’s format() method, we use %d , but what if you actually want to use percent sign in the String.

If you want to escape percent sign in String’s format method, you can use % twice ( %% ).

Let’s see with the help of example:

As you can see, we have used %% to escape percent symbol in 10% .

Further reading:

How to escape double quotes in String in java

Print double quotes in java

Escape Percent Sign in printf() Method in Java

You can apply same logic in printf method to print percent sign using System.out.printf() method.

That’s all about How to escape percent sign in String’s format method in java.

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