Daniel Grob - [26/Jul/06 12:38 PM ] ULCNumberDataType uses the DecimalFormat class to format the numbers. The DecimalFormat class rounds according to the BigDecimal.ROUND_HALF_EVEN policy. This behavior is hardcoded in the DecimalFormat class and cannot be changed. Swing's JFormattedTextField behaves the same way. You should implement a custom data type if you want to round according to a differend rounding policy.

Daniel Grob - [21/Nov/07 08:19 AM ] See http://forums.java.net/jive/thread.jspa?messageID=97830&tstart=0

ULC @ UBS - [29/Feb/08 03:05 PM ] We found that the rounding should be changed, too. The behaviour could be configured using the following snippet: We recommend to provide a improved UI class that let it configure with an appropriate setter on the ULC side. public static class UICustomNumberDataType extends UINumberDataType { private int fMaxFractionDigits; public void setMaxFractionDigits(int maxDigits) { fMaxFractionDigits = maxDigits; super.setMaxFractionDigits(maxDigits); } //this function allows rounding on various number of scale //see TD 2027 public String convertToString(Object obj, boolean flag) { if (obj instanceof Number) { BigDecimal bd = new BigDecimal(obj.toString()); bd = bd.setScale(fMaxFractionDigits, BigDecimal.ROUND_HALF_UP); return super.convertToString(bd, flag); } else { return super.convertToString(obj, flag); } } }

Daniel Grob - [18/Jun/08 05:16 PM ] New API:

• ULCNumberDataType.roundMode property
• ULCPercentDataType.roundMode property