How to get two digit decimal point in double

[sri ramvaithiyanathan]

Hi,

I used numberformat to get two digit decimal. (Note its return type is string)
In database I need to save this value as double.

So I converted string to double. while converting I am getting decimal value as one digit instead of two.
Is there any way to get two digit decimal point in double.

import java.text.NumberFormat;

public class decimalFormatter {
	public static void main(String args[]) {
		NumberFormat nf = NumberFormat.getInstance();
		nf.setMinimumFractionDigits(2);
		String stringConversion = nf.format(2.00);
		System.out.println(stringConversion);
		Double doubleConversion = Double.parseDouble(stringConversion);
		System.out.println(doubleConversion);
	}
}

Output:

stringConversion::2.00
doubleConversion::2.0

P.S: I am facing this problem only when the input is of type x.00

Regards,
Sriram.V

[Henry Wong]

sri ramvaithiyanathan wrote:Hi,

I used numberformat to get two digit decimal. (Note its return type is string)
In database I need to save this value as double.

So I converted string to double. while converting I am getting decimal value as one digit instead of two.
Is there any way to get two digit decimal point in double.

import java.text.NumberFormat;

public class decimalFormatter {
	public static void main(String args[]) {
		NumberFormat nf = NumberFormat.getInstance();
		nf.setMinimumFractionDigits(2);
		String stringConversion = nf.format(2.00);
		System.out.println(stringConversion);
		Double doubleConversion = Double.parseDouble(stringConversion);
		System.out.println(doubleConversion);
	}
}

Output:

stringConversion::2.00
doubleConversion::2.0

P.S: I am facing this problem only when the input is of type x.00

Regards,
Sriram.V

There is no such a thing as a format regarding double values -- there is no one digit or two digit. The reason it is showing up as one digit is that the println() is converting it back to a string prior to printing it -- so if you want two digits, convert it back to a string (yourself instead of having the core library do it) and print that string instead.

Henry

[Randall Twede]

or use BigDecimal instead

[Campbell Ritchie]

If you need to retain the number of places after the decimal point, and you are dealing with a number which you might do arithmetic on, consider aBigDecimal. Beware:new BigDecimal(1.23) does not contain 1.23. It contains something which differs slightly from 1.23. New BigDecimal("1.23") contains exactly 1.23. You can set the scale or round a BigDecimal.
If you are using BigDecimal in Java™, you will probably want a DECIMAL(??, 2) as your type in the database.

[Campbell Ritchie]

Have you been taking lessons from Rob Spoor, Randall Twede?

[Randall Twede]

lol Campbell. no, i have just been using BigDecimal and BigInteger(even more) lately

[Rob Spoor]

Campbell meant you beating him in your timing. I tend to do that sometimes, especially to Campbell

[Campbell Ritchie]

You are doing well; 45 seconds’ difference, but Rob usually manages 30 seconds

[sri ramvaithiyanathan]

Thanks to all.

Regards,
Sriram.V

[Campbell Ritchie]

You’re welcome