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Thread: Percentage with String.format

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    Default 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)?
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    Default Re: Percentage with String.format

    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.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Percentage with String.format

    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.
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    2. Give full details of errors and provide us with as much information about the situation as possible.
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