Thread: Percentage with String.format

I'm not having great success finding an answer in google for this question.
I wanted to try to format a double into a percentage using the String.format() method (not the number format classes). I was trying to figure out a String which would work, and the closest I've gotten is this:

public static void main(String[] args) {
		double value = 0.7542;
		String format = "%.2f%%";
		System.out.println(String.format(format, value));
}

This outputs:

0.75%

The problem, is that I am wanting it to treat my value as a percentage in decimal form, meaning the output I want to get is:

75.42%

Is there a format which will treat it like a percentage? If not, is it possible to do math inside of the format String (multiply the value by 100)?

do math inside of the format String (multiply the value by 100)?

Did you try this:

System.out.println(String.format(format, 100*value));

The format String is a String of characters. There is no execution of its parts like in an expression.

I'm wanting to avoid that if possible. This is being put into a method where the percentage format will not always be used. I would have to add an extra if statement, which I want to avoid if possible so I don't add extra complexity.