Java Utililty Methods Locale Format

List of utility methods to do Locale Format

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Description

The list of methods to do Locale Format are organized into topic(s).

Method

StringformatPCT(Object num)
Format percentage to two decimal places, like xx.xx%. 
String result;
if (num instanceof Number) {
    Locale en = new Locale("en");
    DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance(en);
    df.applyPattern("0.00");
    result = df.format(num) + "%";
} else {
    result = num.toString();
...
StringformatPersent(Object input)
DOC Zqin Comment method "formatPersent". 
if (checkInput(input)) {
    Double db = new Double(input.toString());
    DecimalFormat format = (DecimalFormat) DecimalFormat.getPercentInstance(Locale.ENGLISH);
    format.applyPattern("0.00%"); 
    return format.format(db);
return null;
StringformatSmartDate(Date date)
Format a date as returned for producing a portable player readable date. 
DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.US);
try {
    SimpleDateFormat simpleFormatter = (SimpleDateFormat) formatter;
    simpleFormatter.applyPattern("yy-MM-dd");
    String result = simpleFormatter.format(date);
    return result;
} catch (Exception e) {
return "";
StringformatString(Object[] args)
This method will format the message contained in the first element of the supplied array in the default locale 
return formatString(args, null);
StringformatString(String pattern, Object... args)
Format using MesssageFormat but with the ROOT locale 
return new MessageFormat(pattern, Locale.ROOT).format(args);
DateformatString2Date(String dateString)
format String Date 
SimpleDateFormat sdf = new SimpleDateFormat();
Date datum = new Date();
try {
    datum = sdf.parse(dateString);
    return datum;
} catch (ParseException e) {
    return null;
StringformattedFromDouble(double d, int scale, Locale locale)
Convert from a BigDecimal forcing the scale. 
NumberFormat formatted = NumberFormat.getNumberInstance(locale);
formatted.setMaximumFractionDigits(scale);
formatted.setMinimumFractionDigits(scale);
return formatted.format(d);
StringformattedFromLong(long l, Locale locale)
Convert from an long. 
return NumberFormat.getNumberInstance(locale).format(l);
doubleformattedToDouble(String str, Locale loc)
Convert to double from a formatted string. 
if (str.length() == 0) {
    str = "0";
return NumberFormat.getNumberInstance(loc).parse(str).doubleValue();
StringformatTime(Calendar calendar, String format)
format Time 
return new SimpleDateFormat(format, Locale.getDefault()).format(calendar.getTime());