Java Utililty Methods Decimal Format

Integer addDouble(Integer i, Double d)
add Double

if (d == null && i == null) {
 return null;
} else if (d == null && i != null) {
 return i;
} else if (d != null && i == null) {
 return Integer.valueOf(integerFormatter.format(d));
} else {
 return i + Integer.valueOf(integerFormatter.format(d));
...

Double adjust(Double lng, Double lat, Double distance, Double angle)
adjust

double dx = distance * 1000 * Math.sin(angle * Math.PI / 180);
double dy = distance * 1000 * Math.cos(angle * Math.PI / 180);
double lon1 = (dx / Ed(lat) + rad(lng)) * 180 / Math.PI;
double lat1 = (dy / Ec(lat) + rad(lat)) * 180 / Math.PI;
if (angle == 0 || angle == 180) {
 return Double.parseDouble(df.format(lat1));
} else {
 return Double.parseDouble(df.format(lon1));
...

Double adjustDoubleNumber(Double doubleNumber, int maxIntPart, int maxFloatPart)
adjust Double Number

NumberFormat numberFormat = NumberFormat.getInstance(Locale.getDefault());
numberFormat.setMaximumFractionDigits(maxFloatPart);
numberFormat.setMaximumIntegerDigits(maxIntPart);
numberFormat.setMinimumFractionDigits(maxFloatPart);
try {
 doubleNumber = numberFormat.parse(numberFormat.format(doubleNumber)).doubleValue();
} catch (ParseException e) {
 new RuntimeException("The adjustDecimalNumber method haved an exception", e);
...

String createMeanRmsString(double values[])
creates a predefined string, that contains useful statistical information.

double mean = calcMean(values);
double rms = calcRms(values);
double meanrms = calcStandardDeviation(values, mean);
String outString = "rms=" + formatter.format(rms) + "; mean=" + formatter.format(mean) + "; stddev="
 + formatter.format(meanrms);
return outString;

String decimal2percent(double decimal, int pos)
decimalpercent

NumberFormat nt = NumberFormat.getPercentInstance();
nt.setMinimumFractionDigits(pos);
return nt.format(decimal);

String decimal2string(BigDecimal arg, Locale loc)
decimalstring

if (arg == null)
 return null;
return NumberFormat.getInstance(loc).format(arg);

String decimalConversation(double amount)
decimal Conversation

NumberFormat formatter = new DecimalFormat("#0.00");
return formatter.format(amount);

DecimalFormat decimalFormat()
decimal Format

return decimalFormat(false);

String decimalFormat(double d)
decimal Format

java.text.DecimalFormat DF = new java.text.DecimalFormat("#,##0.00", new DecimalFormatSymbols(Locale.US));
return DF.format(d);

String decimalFormat(double no)
decimal Format

DecimalFormat df = new DecimalFormat("######.##");
String val = df.format(no);
int index = val.indexOf(".");
if (index == -1)
 val = val + ".00";
else {
 if (val.substring(index + 1, val.length()).length() - 1 == 0)
 val = val + "0";
...