37. The RoundingMode and scale

• RoundingMode enumeration specify a rounding method:

  
  import java.math.RoundingMode;
  
  

• Two of the values in the RoundingMode enumeration, such as

  
      HALF_UP   // Most commonly used rounding scheme
      HALF_EVEN // "Banker's rounding" often used in the USA
  
  

• For example,

  
      subtotal.setScale( 2, RoundingMode.HALF_UP );