Numbers - Java - page 193

public public class class FormatPlurals FormatPlurals {

public public static static void void main ( String [] argv ) {

report ( 0 );
report ( 1 );
report ( 2 );

}

/** report -- using conditional operator */
public

public static int n ) {

System . out . println ( "We used " + n + " item" + ( n == 1 ? "" : "s" ));

static void void report ( int

}

}

Does it work?

$ java numbers.FormatPlurals
We used 0 items
We used 1 item
We used 2 items
$

The final println statement is effectively equivalent to:

iif ( n == 1 )
System . out . println ( "We used " + n + " item" );

else

System . out . println ( "We used " + n + " items" );

This is a lot longer, in fact, so the ternary conditional operator is worth learning.

The ChoiceFormat is ideal for this. It is actually capable of much more, but here I'll show
only this simplest use. I specify the values 0, 1, and 2 (or more), and the string values to print
corresponding to each number. The numbers are then formatted according to the range they
fall into:

public public class class FormatPluralsChoice FormatPluralsChoice extends extends FormatPlurals {

// ChoiceFormat to just give pluralized word
static

static double double [] limits = { 0 , 1 , 2 };

static static String [] formats = { "reviews" , "review" , "reviews" };

static

static ChoiceFormat pluralizedFormat = new new ChoiceFormat ( limits , formats );