What does $%,.2f represent?

Question

I am currently reading the Deitel's book on Java, and came across this code in one of their programs:

public String toString()
{
  return String.format( "%s: %s\n%s: $%,.2f; %s: %.2f", 
     "commission employee", super.toString(), 
     "gross sales", getGrossSales(), 
     "commission rate", getCommissionRate() );
}

As the title says, what does the "$%," in front of the ".2f" represent? I already know what a .2f means.

rgettman · Accepted Answer · 2013-04-18 18:03:37Z

6

The $ character means nothing special here. It's just a literal $ to show up in the string. The % character takes it's usual meaning here -- to substitute with a value (here, with 2 decimal places).

Note that it's possible for the $ character to have meaning after the % character. Please see the "Argument Index" section of the Formatter javadocs for details.

edited Apr 18, 2013 at 18:03

answered Apr 18, 2013 at 17:57

rgettman

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1 Comment

Sing Sandibar Over a year ago

Okay, thanks. I always thought that you couldn't put other signs or words next to conversion characters without space

kbickar · Accepted Answer · 2013-04-18 17:57:38Z

6

The $ is literally the dollar sign while the % is the beginning of the argument %,.2f (a float with 2 decimals and a comma)

answered Apr 18, 2013 at 17:57

kbickar

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Comments

AllTooSir · Accepted Answer · 2013-04-18 17:59:50Z

4

%,.2f - format float with 2 decimal places with comma.

answered Apr 18, 2013 at 17:59

AllTooSir

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