Java DecimalFormat.applyPattern方法代码示例

import java.text.DecimalFormat; //导入方法依赖的package包/类
public void write(PrintWriter printer, TimeSeries series) {

        Locale locale  = new Locale("en", "US");
        DecimalFormat formatter = (DecimalFormat)NumberFormat.getNumberInstance(locale);
        formatter.applyPattern("0.0000######");

        printer.print(String.format(header, series.getProperty("sensorid"), series.getLocation(), series.getProperty("position"), series.getSource(), series.getQuantityId(), series.getUnitId(),  series.getProperty("use") ));

        final double times[] = series.getTimesRef();
        final double values[] = series.getValuesRef();
        //TODO: detect order on read and use this order
        printer.println("datetime;value");
        String dateString;
        for (int i = 0; i < times.length; i++) {
            dateString = TimeUtils.mjdToString( times[i],this.datePattern);
            printer.println( dateString + this.delimiter + formatter.format(values[i]) );
        }
        printer.flush();
    }
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * 订单单号生成:17位时间戳，由5位商品id，3位商品类型id,7为用户id,
 *
 * @param uid  用户id
 * @param pid  商品id
 * @param ptid 商品类型id
 * @return 32位纯数字字符串
 */
public static String MakeOrderNum(Integer uid,Integer ptid) {
    DecimalFormat df = new DecimalFormat("000");
    Random random = new Random();
    String finllNum = null;
    String ptidstr=null;
    String struid = null;
    String pidstr=null;
    if (ptid != null) {
         ptidstr = df.format(ptid);
    } else {
        ptidstr = df.format(random.nextInt(100));
    }
    df.applyPattern("0000000");
    if (uid != null) {
        struid = df.format(uid);
    } else {
        struid = df.format(random.nextInt(1000000));
    }
    long nowLong = Long.parseLong(new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date()));
    finllNum = new StringBuffer().append(nowLong).append(ptidstr).append(struid).toString();
    return finllNum;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Helper method used to formats given number into string according to default rules.
 * @param d bouble to be converted
 * @return string representation of given number
 */
protected String FormatNumber(double d) {
	DecimalFormat nf = new DecimalFormat();
	String ret;
	// If module of number is greater than 1e4 or lesser than 1e-4 uses exponential notation
	if (Math.abs(d) >= 1e-4 && Math.abs(d) <= 1e4 || d == 0) {
		nf.applyPattern("#.####");
		ret = nf.format(d);
		if (ret.length() > 7) {
			ret = ret.substring(0, 6);
		}
	} else {
		nf.applyPattern("0.00E00");
		ret = nf.format(d);
	}
	return ret;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Convert the specified locale-sensitive input object into an output
 * object of the specified type.
 *
 * @param value The input object to be converted
 * @param pattern The pattern is used for the convertion
 * @return The converted value
 *
 * @throws org.apache.commons.beanutils.ConversionException if conversion
 * cannot be performed successfully
 * @throws ParseException if an error occurs parsing a String to a Number
 */
@Override
protected Object parse(final Object value, final String pattern) throws ParseException {

    if (value instanceof Number) {
        return value;
    }

    // Note that despite the ambiguous "getInstance" name, and despite the
    // fact that objects returned from this method have the same toString
    // representation, each call to getInstance actually returns a new
    // object.
    final DecimalFormat formatter = (DecimalFormat) DecimalFormat.getInstance(locale);

    // if some constructors default pattern to null, it makes only sense
    // to handle null pattern gracefully
    if (pattern != null) {
        if (locPattern) {
            formatter.applyLocalizedPattern(pattern);
        } else {
            formatter.applyPattern(pattern);
        }
    } else {
        log.debug("No pattern provided, using default.");
    }

    return formatter.parse((String) value);
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Override void apply(DecimalFormat decimalFormat) {
    /* To switch to using codes from symbols, we replace each single occurrence of the
     * currency-sign character with two such characters in a row.
     * We also insert a space character between every occurence of this character and an
     * adjacent numerical digit or negative sign (that is, between the currency-sign and
     * the signed-number). */
    decimalFormat.applyPattern(
        negify(decimalFormat.toPattern()).replaceAll("¤","¤¤").
                                          replaceAll("([#0.,E-])¤¤","$1 ¤¤").
                                          replaceAll("¤¤([0#.,E-])","¤¤ $1")
    );
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Helper method used to formats given number into string according to default rules.
 * @param d double to be converted
 * @return string representation of given number
 */
protected String FormatNumber(double d) {
	DecimalFormat nf = new DecimalFormat();
	nf.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.ENGLISH));
	String ret = null;
	// If module of number is greater than 1e-3 or lesser than 1e3 uses ordinary notation
	if (Math.abs(d) > 1e-3 && Math.abs(d) < 1e3 || d == 0) {
		nf.applyPattern("#.###");
		ret = nf.format(d);
	} else {
		nf.applyPattern("0.00E00");
		ret = nf.format(d);
	}
	return ret;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Helper method used to formats given number into string according to default rules.
 * @param d double to be converted
 * @return string representation of given number
 */
protected String FormatNumber(double d) {
	DecimalFormat nf = new DecimalFormat();
	nf.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.ENGLISH));
	String ret = null;
	// If module of number is greater than 1e-4 or lesser than 1e4 uses ordinary notation
	if (Math.abs(d) > 1e-4 && Math.abs(d) < 1e4 || d == 0) {
		nf.applyPattern("#.####");
		ret = nf.format(d);
	} else {
		nf.applyPattern("0.00E00");
		ret = nf.format(d);
	}
	return ret;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
public void write(PrintWriter printer, TimeSeries series) {

		Locale locale  = new Locale("en", "US");
		DecimalFormat formatter = (DecimalFormat)NumberFormat.getNumberInstance(locale);
		formatter.applyPattern("0.0######E000");

		// now the data
		final double times[] = series.getTimesRef();
		final double values[] = series.getValuesRef();
		for (int i = 0; i < times.length; i++) {
			String line = formatter.format((times[i] - referenceDateInMjd)/factorToMjd) + " " + formatter.format(values[i]);
			printer.println(line);
		}
		printer.flush();
	}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
public TrackPresenterImpl(){
    mDistanceFormater = (DecimalFormat) NumberFormat.getInstance();
    mDistanceFormater.setMinimumFractionDigits(2);
    mDistanceFormater.setMaximumFractionDigits(2);
    mTimeFormater = (DecimalFormat) DecimalFormat.getInstance();
    mTimeFormater.applyPattern("00");
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Returns the formatted value as a String, which is displayed for a given
 * price of type BigDecimal. The formatting used takes into account the
 * given locale, and optionally a grouping separator based on the locale.
 * 
 * @param price
 *            the price as a BigDecimal to be formatted.
 * @param useGrouping
 *            a flag indicating whether a grouping for the formatting will
 *            be used or not.
 * @param locale
 *            the locale to use for the formatting.
 * @return the displayed price formatted value as a String.
 */
public String getValueToDisplay(BigDecimal price, boolean useGrouping,
        Locale locale) {

    DecimalFormat nf = new DecimalFormat();
    nf.setDecimalFormatSymbols(new DecimalFormatSymbols(locale));
    nf.setGroupingUsed(useGrouping);
    nf.setMinimumFractionDigits(MINIMUM_FRACTION_DIGIT);
    if (useGrouping) {
        nf.applyPattern(PriceConverter.FORMAT_PATTERN_WITH_GROUPING);
    } else {
        nf.applyPattern(PriceConverter.FORMAT_PATTERN_WITHOUT_GROUPING);
    }

    String formattedPrice;
    if (price == null) {
        formattedPrice = nf.format(BigDecimal.ZERO);

    } else {
        if (price.scale() > MINIMUM_FRACTION_DIGIT) {
            nf.setMaximumFractionDigits(price.scale());
        }
        formattedPrice = nf.format(price);
    }
    return formattedPrice;

}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * 格式化数字 double2string
 */
private CharSequence formatDecimal2String(double decimal) {
    String decimalScaleStr = "";
    String s = mDecimalFill ? "0" : "#";
    for (int i = 0; i < mDecimalScale; i++) {
        decimalScaleStr += s;
    }

    DecimalFormat formatter = (DecimalFormat) DecimalFormat.getInstance(Locale.getDefault());
    if (mShowCommas && !mShowSymbol) { // 显示数字分号 && 不显示数字符号
        formatter.applyPattern(",##0." + decimalScaleStr);
    } else if (mShowCommas) { // 显示数字分号 && 显示数字符号
        formatter.applyPattern(mSymbol + ",##0." + decimalScaleStr);
    } else if (mShowSymbol) { // 不显示数字分号 && 显示数字符号
        formatter.applyPattern(mSymbol + "#0." + decimalScaleStr);
    } else { // 不显示数字分号 && 不显示数字符号
        formatter.applyPattern("#0." + decimalScaleStr);
    }

    SpannableStringBuilder result = new SpannableStringBuilder(formatter.format(decimal));
    if (mShowSymbol) {
        if (mSymbolSize == 0) mSymbolSize = getTextSize();
        result.setSpan(new AbsoluteSizeSpan((int) mSymbolSize), 0, mSymbol.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
    }

    return result;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Convert to a string with 2 decimal places
 */
public String toString(Locale locale) {
	// Decimal formats are generally not synchronized
	DecimalFormat formatter = (DecimalFormat) NumberFormat.getNumberInstance(locale);
	formatter.applyPattern("#0.##");
	return formatter.format(toCurrency());
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Retourne sous forme d'une chaîne de caractères String le temps écoulé depuis la mise
 * à zéro du chronomètre interne.
 *
 * @return le nombre de secondes écoulés jusqu'au 1/1000s
 */
public static String chronoStringElapsedTime() {
  Locale locale = Locale.getDefault();
  DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance(locale);
  df.applyPattern("#,##0.000");
  return df.format(chronoElapsedTime());
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * 格式化数字 double2string
 */
private CharSequence formatDecimal2String(double decimal) {
    String decimalScaleStr = "";
    String s = mDecimalFill ? "0" : "#";
    for (int i = 0; i < mDecimalScale; i++) {
        decimalScaleStr += s;
    }

    DecimalFormat formatter = (DecimalFormat) DecimalFormat.getInstance(Locale.getDefault());
    if (mShowCommas && !mShowSymbol) { // 显示数字分号 && 不显示数字符号
        formatter.applyPattern(",##0." + decimalScaleStr);
    } else if (mShowCommas) { // 显示数字分号 && 显示数字符号
        formatter.applyPattern(mSymbol + ",##0." + decimalScaleStr);
    } else if (mShowSymbol) { // 不显示数字分号 && 显示数字符号
        formatter.applyPattern(mSymbol + "#0." + decimalScaleStr);
    } else { // 不显示数字分号 && 不显示数字符号
        formatter.applyPattern("#0." + decimalScaleStr);
    }
    formatter.setRoundingMode(RoundingMode.DOWN);

    SpannableStringBuilder result = new SpannableStringBuilder(formatter.format(decimal));
    if (mShowSymbol) {
        if (mSymbolSize == 0) mSymbolSize = getTextSize();
        result.setSpan(new AbsoluteSizeSpan((int) mSymbolSize), 0, mSymbol.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
    }

    return result;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Override
public View onCreateView(
        LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    setHasOptionsMenu(true);  // this fragment has no menu items to display

    // get Bundle of arguments then extract the dsObject
    Bundle arguments = getArguments();
    if (arguments != null)
        dsObject = arguments.getParcelable("dsObjectArrayListItem");

    // inflate DetailFragment's layout
    View view =
            inflater.inflate(R.layout.fragment_details, container, false);

    // get the EditTexts
    TextView objectIdTextView = view.findViewById(R.id.objectIdTextView);
    TextView typeTextView = view.findViewById(R.id.typeTextView);
    TextView magTextView = view.findViewById(R.id.magTextView);
    TextView sizeTextView = view.findViewById(R.id.sizeTextView);
    TextView distTextView = view.findViewById(R.id.distTextView);
    TextView raTextView = view.findViewById(R.id.raTextView);
    TextView decTextView = view.findViewById(R.id.decTextView);
    TextView constTextView = view.findViewById(R.id.constTextView);
    TextView nameTextView = view.findViewById(R.id.nameTextView);
    psaTextView = view.findViewById(R.id.psaTextView);
    oithTextView = view.findViewById(R.id.oithTextView);
    skyAtlasTextView = view.findViewById(R.id.skyAtlasTextView);
    psaTextViewLabel = view.findViewById(R.id.psaLabelTextView);
    oithTextViewLabel = view.findViewById(R.id.oithLabelTextView);
    skyAtlasTextViewLabel = view.findViewById(R.id.skyAtlasLabelTextView);
    TextView catTextView = view.findViewById(R.id.catTextView);
    TextView altTextView = view.findViewById(R.id.altTextView);
    TextView azTextView = view.findViewById(R.id.azTextView);
    TextView riseTextView = view.findViewById(R.id.riseTextView);
    TextView setTextView = view.findViewById(R.id.setTextView);


    // set the TextViews
    NumberFormat numberFormat = NumberFormat.getInstance(Locale.US);
    DecimalFormat df = (DecimalFormat) numberFormat;
    df.applyPattern("0.0");
    setUserPreferences();
    objectIdTextView.setText(dsObject.getDsoObjectID());
    String typeAbbr = dsObject.getDsoType();
    typeTextView.setText(AstroCalc.getDSOType(typeAbbr));
    String magnitude = df.format(dsObject.getDsoMag());
    magTextView.setText(magnitude);
    sizeTextView.setText(dsObject.getDsoSize());
    distTextView.setText(dsObject.getDsoDist());
    raTextView.setText(AstroCalc.convertDDToHMS(dsObject.getDsoRA()));
    decTextView.setText(AstroCalc.convertDDToDMS(dsObject.getDsoDec()));
    String constAbbr = dsObject.getDsoConst();
    constTextView.setText(AstroCalc.getConstName(constAbbr));
    nameTextView.setText(dsObject.getDsoName());
    psaTextView.setText(dsObject.getDsoPSA());
    oithTextView.setText(dsObject.getDsoOITH());
    skyAtlasTextView.setText(dsObject.getDsoSkyAtlas());
    catTextView.setText(dsObject.getDsoCatalogue());
    String altitude = df.format(dsObject.getDsoAlt()) + "°";
    altTextView.setText(altitude);
    String azimuth = df.format(dsObject.getDsoAz()) + "°";
    azTextView.setText(azimuth);
    riseTextView.setText(dsObject.getDsoRiseTimeStr());
    setTextView.setText(dsObject.getDsoSetTimeStr());

    // display constellation image
    if (!constAbbr.equals("")) {
        String constName = "images/" + dsObject.getDsoConst() + ".gif";
        PhotoView constImageView = view.findViewById(R.id.constImageView);
        Bitmap bm = loadConstImage(constName);   // display constellation .gif on detail screen
        constImageView.setImageBitmap(bm);
    }

    return view;
}