Java/Development Class/Big Decimal

Decimal Format Demo

   <source lang="java">

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import java.text.DecimalFormat; import java.text.DecimalFormatSymbols; import java.text.NumberFormat; import java.util.Locale; public class DecimalFormatDemo {

 static public void customFormat(String pattern, double value) {
   DecimalFormat myFormatter = new DecimalFormat(pattern);
   String output = myFormatter.format(value);
   System.out.println(value + "  " + pattern + "  " + output);
 }
 static public void localizedFormat(String pattern, double value, Locale loc) {
   NumberFormat nf = NumberFormat.getNumberInstance(loc);
   DecimalFormat df = (DecimalFormat) nf;
   df.applyPattern(pattern);
   String output = df.format(value);
   System.out.println(pattern + "  " + output + "  " + loc.toString());
 }
 static public void main(String[] args) {
   customFormat("###,###.###", 123456.789);
   customFormat("###.##", 123456.789);
   customFormat("000000.000", 123.78);
   customFormat("$###,###.###", 12345.67);
   customFormat("\u00a5###,###.###", 12345.67);
   Locale currentLocale = new Locale("en", "US");
   DecimalFormatSymbols unusualSymbols = new DecimalFormatSymbols(
       currentLocale);
   unusualSymbols.setDecimalSeparator("|");
   unusualSymbols.setGroupingSeparator("^");
   String strange = "#,##0.###";
   DecimalFormat weirdFormatter = new DecimalFormat(strange,
       unusualSymbols);
   weirdFormatter.setGroupingSize(4);
   String bizarre = weirdFormatter.format(12345.678);
   System.out.println(bizarre);
   Locale[] locales = { new Locale("en", "US"), new Locale("de", "DE"),
       new Locale("fr", "FR") };
   for (int i = 0; i < locales.length; i++) {
     localizedFormat("###,###.###", 123456.789, locales[i]);
   }
 }

}

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