formatting a string in java

Question

I would like to know how to provide a formatting capabilities that enable the user to specify the number of digits of precision to the right of a decimal number. so instead of using the classical formatting .2f or .3f etc.. I want the user to be able to enter the precision of the decimal number.

i have a code written as follows

Scanner input = new Scanner (System.in);
int precision = input.nextInt();

addNumbers.numberRepresentaiton(int precision);

The method is defined as below

private String numberRepresentation(int precision)
{
    return String.format("%.precisionf", add);
}

executing the above results in conversion formatting error. Thank you for your time.

Yeahh I know Adel !! I was thinking of it for about 10 minutes and I was not thinking of the concatenation as a solution to it. anyhow problem solved :) — Sinan
– Sinan, Commented Mar 25, 2012 at 21:24

Andreas Dolk · Accepted Answer · 2012-03-25 21:09:38Z

6

private String numberRepresentation(int precision)
{
    return String.format("%." + precision + "f", add);
}

You have to concatenate the format string - the Formatter can't detect the variable name automagically ;)

answered Mar 25, 2012 at 21:09

Andreas Dolk

115k20 gold badges185 silver badges275 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Sinan Over a year ago

Thank you Andreas, it works and the it is the correct answer.

icyrock.com · Accepted Answer · 2012-03-25 21:10:08Z

2

Use:

return String.format("%." + precision + "f", add);

answered Mar 25, 2012 at 21:10

icyrock.com

28.7k4 gold badges72 silver badges92 bronze badges

1 Comment

Sinan Over a year ago

Thank you icyrock for the asnwer!!

Collectives™ on Stack Overflow

formatting a string in java

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related