How to convert a double to a string with 2 decimal places?

Question

I'm turning this double into a string so I can display it on a TextView. I want the string to have 2 decimal places using String.format, but I don't know where to put it in this line of text.

 Example.setText(Double.toString(dValue));

Any Ideas?

Answer 1

Example.setText(String.format("%.2f", dValue));

• .2 means 2 decimal places
• f means it's a decimal type

Answer 2

The quick and dirty way is to use a formatted String and specify the number of decimal points. Lately there's been a trend of suggesting the usage of a DecimalFormat instead since it will respect different locales and the usage of commas or points as a decimal separator.

//The suggested way lately
DecimalFormat formatter = new DecimalFormat("#0.00");        
twoDecimals.setText(formatter.format(2.123145));

//The usual way with some caveats
twoDecimals.setText(String.format("%.2f",2.123));

I'm pretty sure it could also be done with formatted strings, but hey.. who am I to go against the trend.

Answer 3

Try this -

DecimalFormat df = new DecimalFormat("#.00");
Example.setText(df.format(dValue));