Android: String format with Double value

I need to create a String using the Formater to display some double float values. I’m not clear on how to code it. Here is what I have:

Double dWeightInKg = 100;
Double dWeightInLbs = 220:
String headerText = String.format("%.0f kg / %.0f lbs",Double.toString(dWeightInKg) , Double.toString(dWeightInLbs));

I’m looking for the following output:

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    I get a runtimeexception – badArgumentType(formater) on my String.format line.

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  • 3 Solutions collect form web for “Android: String format with Double value”

    %.0f is the format string for a float, with 0 decimal places.

    The values you’re passing to String.format are String, String when it needs to be Double, Double.

    You do not need to convert the doubles to strings.

    String headerText = String.format("%.0f kg / %.0f lbs", dWeightInKg, dWeightInLbs);

    This should work,

    DecimalFormat df = new DecimalFormat("#.##");
    private String convertToFormat(double value){
        return df.format(value);

    You don’t need the Double.ToString() since your formatter is already expecting a number. Try this:

    String headerText = String.format("%.0f kg / %.0f lbs", dWeightInKg , dWeightInLbs);
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