CODEWITHSUNDEEP
javadouble
Lepo
Lepo

Reputation: 53

Force a double to write the whole Number

How can I force a double in Java to print the whole number. Not like 1.65462165887E12.But like 1654621658874684?

Thanks

Upvotes: 5

Views: 11832

Answers (4)

Jesper
Jesper

Reputation: 206786

Format it appropriately. For example:

System.out.printf("%.1f", 1654621658874684.0);

Or you can use it like a String:

//"%.1f" this mean, how many number after the comma
String value = String.format("%.1f", 1654621658874684.0);

Be aware that double is not infinitely precise. It has a precision of about 15 to 17 decimal digits. If you need floating-point numbers with arbitrary precision, use BigDecimal instead of double.

Upvotes: 11

Peter Lawrey
Peter Lawrey

Reputation: 533482

I use something like

if((long) d == d)
  System.out.println((long) d);
else
  System.out.println(d);

long can have 18 digits whereas double has 15-16 digits of accuracy at best.

Upvotes: 0

Vic
Vic

Reputation: 22031

String formatted = String.format("%f", dblNumber);

Upvotes: 1

assylias
assylias

Reputation: 328598

You could use String.format():

System.out.println(String.format("%.0f", 1654621658874684.0d)); // prints 1654621658874684

Upvotes: 2

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