45. Formatting Currency

• When dealing with money, it would be nice to have the amounts held by BigDecimal properly formatted.

• For example, when displaying US currency you might want to include a dollar sign and a comma as a thousands separator.

• The NumberFormat class, found in the java.text library, can create an appropriate object for US currency with the following code:

  
  import java.text.NumberFormat;
  import java.util.Locale;
  
      BigDecimal payment = new BigDecimal("1000000.00"));
      NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.US);
      double doublePayment = payment.doubleValue(); 
      String strPayment = nf.format(doublePayment);
      System.out.println(strPayment);