How to output a double number

[premmehrotra]

have a varaiable of type double. When I output using system.out.print,
I want to do following:

1. Output should not be in Exponent format, i.e., 1000000000E07
2. I want only a fixed no of decimal numbers i.e., 23.456 27.555
29.052


How can I do above two.

 

[Mark Thomas]

have a varaiable of type double. When I output using system.out.print,
I want to do following:

1. Output should not be in Exponent format, i.e., 1000000000E07
2. I want only a fixed no of decimal numbers i.e., 23.456 27.555
29.052


How can I do above two.

At Java 5.0 you can use printf instead of print. Otherwise, have a look
at the java.text package, in particular the NumberFormat class.

Mark

 

[Mark Thomas]

At Java 5.0 you can use printf instead of print. Otherwise, have a look
at the java.text package, in particular the NumberFormat class.

Mark

Whoops - that should be DecimalFormat.

 

[Rhino]

have a varaiable of type double. When I output using system.out.print,
I want to do following:

1. Output should not be in Exponent format, i.e., 1000000000E07
2. I want only a fixed no of decimal numbers i.e., 23.456 27.555
29.052


How can I do above two.

Use a NumberFormat.

For example:

Double myDouble = 1.5671097486754;
NumberFormat numberFormat =
NumberFormat.getNumberInstance(Locale.getDefault());
numberFormat.setMaximumFractionDigits(2);
System.out.println("Formatted number: " + numberFormat.format(myDouble));
//should write 1.57

 

[Oliver Wong]

have a varaiable of type double. When I output using system.out.print,
I want to do following:

1. Output should not be in Exponent format, i.e., 1000000000E07
2. I want only a fixed no of decimal numbers i.e., 23.456 27.555
29.052

How can I do above two.

See http://java.sun.com/j2se/1.5.0/docs/api/java/text/DecimalFormat.html

- Oliver

 

[premmehrotra]

Thanks a lot to all. This is exactly what I was looking for. I am using
Java 1.4.x

 

[Tony Morris]

have a varaiable of type double. When I output using system.out.print,
I want to do following:

1. Output should not be in Exponent format, i.e., 1000000000E07
2. I want only a fixed no of decimal numbers i.e., 23.456 27.555
29.052


How can I do above two.

Like this: http://jqa.tmorris.net/GetQAndA.action?qids=46&showAnswers=true