change to two decimal points

Question

Please help me to view the results of this bmi calculations to two decimal points.

here is my code...

@Override
public void onClick(View v) {

    double weight;
    double height;
    double bmi;
    String msg = "";


    if (field_height.getText().toString().equals("") || field_weight.getText().toString().equals("")){

        Toast.makeText(getApplicationContext(), "No Valid Values!", Toast.LENGTH_LONG);

    }else {

        weight = Double.parseDouble(field_weight.getText().toString());
        height = Double.parseDouble(field_height.getText().toString());

        bmi = height * height;
        bmi = (weight / bmi);
    }
}

This will help `String result = String.format("%.2f", bmi);` — Govind Raj, Apr 17 '17 at 09:02

score 1 · Answer 1 · answered Apr 17 '17 at 09:04

1

Try using String.format():

String bmiString = String.format( "%.2f", bmi);

Or use class DecimalFormat:

DecimalFormat df = new DecimalFormat("####0.00");
String bmiString = df.format(bmi);

Hope this will help~

answered Apr 17 '17 at 09:04

Ferdous Ahamed

19,328
5
45
54

Govind Raj · Answer 2 · 2017-04-17T12:35:34.547

-1

[corrected]

Please find the answer below,

DecimalFormat df = new DecimalFormat("0.00##");
String result = df.format(bmi);

Hope, this will help.

Thanks

edited Apr 17 '17 at 12:35

answered Apr 17 '17 at 09:00

Govind Raj

95
6

2

Test code before submitting answers. 1. `DecimalFormat.format` expects a number, you are giving it a string, it's not going to work. 2. `0.00##` will display 4 decimals, OP wants 2. – BackSlash Apr 17 '17 at 09:06

change to two decimal points

2 Answers2