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javaformatting

What's Best Way of Formatting Decimal Numbers in Java?

I've been looking for formatting decimal numbers easily as in JavaScript by using toFixed().

What's your suggestion?

Solution

  • Using String.format is likely to be the simplest.

    var num = new Number(13.3714);
document.write(num.toFixed()+"<br />");
document.write(num.toFixed(1)+"<br />");
document.write(num.toFixed(3)+"<br />");
document.write(num.toFixed(10));

    in Java

    double num = 13.3714;
// Uses String.format()
System.out.printf(
          "%f<br />" +
          "%.1f<br />" +
          "%.3f<br />" +
          "%.10f<br />", num, num, num, num);