Example usage for java.text DecimalFormat format

Introduction

In this page you can find the example usage for java.text DecimalFormat format.

Prototype

public final String format(double number) 

Source Link

Document

Specialization of format.

Usage

From source file:de.unidue.inf.is.ezdl.dlcore.utils.StringUtils.java

/**
 * Returns a double value as a string with a given number of decimal digits.
 * /*from ww  w  .j a v a  2 s .  c o m*/
 * @param value
 *            double value
 * @param numberOfDecimals
 *            number of decimal digits
 * @return string with a given number of decimal digits
 */
public static String toString(double value, int numberOfDecimals) {
    DecimalFormat df = new DecimalFormat("#.#");
    df.setMinimumFractionDigits(numberOfDecimals);
    return df.format(value);
}

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From source file:com.ikon.util.FormatUtil.java

/**
 * Format the document size for human readers
 *//*from   w  ww  .  j a  va 2  s.com*/
public static String formatSize(long size) {
    DecimalFormat df = new DecimalFormat("#0.0");
    String str;

    if (size / 1024 < 1) {
        str = size + " B";
    } else if (size / 1048576 < 1) {
        str = df.format(size / 1024.0) + " KB";
    } else if (size / 1073741824 < 1) {
        str = df.format(size / 1048576.0) + " MB";
    } else if (size / 1099511627776L < 1) {
        str = df.format(size / 1073741824.0) + " GB";
    } else if (size / 1125899906842624L < 1) {
        str = df.format(size / 1099511627776.0) + " TB";
    } else {
        str = "BIG";
    }

    return str;
}

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From source file:de.codesourcery.springmass.math.Matrix.java

private static String format(double v) {
    final DecimalFormat df = new DecimalFormat("##0.0##");
    return StringUtils.leftPad(df.format(v), 6);
}

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From source file:net.ceos.project.poi.annotated.core.CellFormulaHandler.java

/**
 * Apply a double value to the cell.//from   w ww . j  a  v  a  2s . c  om
 * 
 * @param configCriteria
 *            the {@link XConfigCriteria}
 * @param object
 *            the object
 * @param cell
 *            the {@link Cell} to use
 * @throws NoSuchMethodException
 * @throws IllegalAccessException
 * @throws InvocationTargetException
 * @throws ElementException
 */
protected static void doubleHandler(final XConfigCriteria configCriteria, final Object object, final Cell cell)
        throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, ElementException {
    if (configCriteria.getElement().isFormula()) {
        if (!toFormula(configCriteria, cell)) {
            // apply the formula
            CellValueHandler.consumeValue(cell, toExplicitFormula(object, configCriteria.getField()));
        }
    } else {
        // normal manage cell
        if (StringUtils.isNotBlank(configCriteria.getElement().transformMask())) {
            DecimalFormat df = new DecimalFormat(configCriteria.getElement().transformMask());
            CellValueHandler.consumeValue(cell, df.format((Double) configCriteria.getField().get(object))
                    .replace(Constants.COMMA, Constants.DOT));
        } else {
            // apply the value
            CellValueHandler.consumeValue(cell, configCriteria.getField().get(object));
        }
    }
}

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From source file:com.l2jfree.lang.L2Thread.java

public static String[] getMemoryUsageStatistics() {
    double max = Runtime.getRuntime().maxMemory() / 1024; // maxMemory is the upper limit the jvm can use
    double allocated = Runtime.getRuntime().totalMemory() / 1024; //totalMemory the size of the current allocation pool
    double nonAllocated = max - allocated; //non allocated memory till jvm limit
    double cached = Runtime.getRuntime().freeMemory() / 1024; // freeMemory the unused memory in the allocation pool
    double used = allocated - cached; // really used memory
    double useable = max - used; //allocated, but non-used and non-allocated memory

    SimpleDateFormat sdf = new SimpleDateFormat("H:mm:ss");
    DecimalFormat df = new DecimalFormat(" (0.0000'%')");
    DecimalFormat df2 = new DecimalFormat(" # 'KB'");

    return new String[] { "+----", // ...
            "| Global Memory Informations at " + sdf.format(new Date()) + ":", // ...
            "|    |", // ...
            "| Allowed Memory:" + df2.format(max),
            "|    |= Allocated Memory:" + df2.format(allocated) + df.format(allocated / max * 100),
            "|    |= Non-Allocated Memory:" + df2.format(nonAllocated) + df.format(nonAllocated / max * 100),
            "| Allocated Memory:" + df2.format(allocated),
            "|    |= Used Memory:" + df2.format(used) + df.format(used / max * 100),
            "|    |= Unused (cached) Memory:" + df2.format(cached) + df.format(cached / max * 100),
            "| Useable Memory:" + df2.format(useable) + df.format(useable / max * 100), // ...
            "+----" };
}

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From source file:com.nextgis.firereporter.ScanexNotificationItem.java

/**
 * Simple coordinate decimal formatter//from   w w w . j a  va 2  s  . c o  m
 * 
 * @param coord
 * @return
 */
public static String formatCoord(double coord) {
    DecimalFormat df = new DecimalFormat("###.######");
    df.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.US));
    return df.format(coord);
}

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From source file:com.webarch.common.lang.StringSeriesTools.java

/**
 * double,?0,?0.00//  w  ww . ja va  2  s .  c om
 *
 * @param numString 
 * @param pattern   ??
 * @return double
 */
public static double string2double(final String numString, final String pattern) {
    try {
        double num = Double.parseDouble(numString);
        String defalutPattern = pattern == null ? "0.00" : pattern;
        DecimalFormat decimalFormat = new DecimalFormat(defalutPattern);
        num = Double.parseDouble(decimalFormat.format(num));
        return num;
    } catch (NumberFormatException e) {
        return 0;
    }
}

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From source file:de.codesourcery.jasm16.utils.Matrix.java

private static String format(float v) {
    final DecimalFormat df = new DecimalFormat("##0.0##");
    return StringUtils.leftPad(df.format(v), 6);
}

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From source file:luceneprueba.utils.FileParser.java

static public void createFilesFromJSONArray() throws IOException {
    File dir = new File("files/input");
    File[] files = dir.listFiles();

    if (files == null) {
        System.out.println("No existe la carpeta \'input\' dentro de la carpeta files.");
        return;//from ww  w.ja  va2  s. c o m
    }

    if (files.length == 0) {
        System.out.println("No hay ningun archivo en la carpeta \'input\' para ser indexado");
        return;
    }

    BufferedReader br;
    String fileContent;
    JSONArray jsonArray = null;
    JSONParser jsonParser = new JSONParser();
    int i = 1;
    FileWriter datosReviews = null;
    try {
        datosReviews = new FileWriter("files/output/datos_reviews.txt");
    } catch (IOException ex) {
        ex.printStackTrace(System.out);
    }
    for (File file : files) {
        if (file.isFile() && file.canRead() && file.getName().endsWith(".txt")) {
            System.out.println("Leyendo el archivo: " + file.getName());
            FileWriter contentReviews;
            try {
                br = new BufferedReader(new FileReader(file));
                fileContent = br.readLine();
                jsonArray = (JSONArray) jsonParser.parse(fileContent);
                Iterator it = jsonArray.iterator();
                DecimalFormat formato = new DecimalFormat("000000");
                while (it.hasNext()) {
                    JSONObject json = (JSONObject) it.next();
                    if (json.get("Genre") != null && json.get("Date") != null) {
                        contentReviews = new FileWriter(
                                "files/output/clasificador/review_clasificador_" + formato.format(i) + ".txt");
                        datosReviews.write(Integer.toString(i) + "_" + (String) json.get("Date") + "_"
                                + (String) json.get("Genre") + "_" + (String) json.get("Score") + "\n");
                        contentReviews.write(Integer.toString(i) + " " + (String) json.get("Review"));
                        i++;
                        contentReviews.close();
                    }
                }
                br.close();
            } catch (FileNotFoundException ex) {
                ex.printStackTrace(System.out);
            } catch (IOException | ParseException ex) {
                ex.printStackTrace(System.out);
            }
        }
    }
    datosReviews.close();
}

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From source file:net.ceos.project.poi.annotated.core.CellFormulaHandler.java

/**
 * Apply a generic value to the cell.//  w  w  w  . j av  a2 s . co m
 * 
 * @param configCriteria
 *            the {@link XConfigCriteria}
 * @param object
 *            the object
 * @param cell
 *            the {@link Cell} to use
 * @throws NoSuchMethodException
 * @throws IllegalAccessException
 * @throws InvocationTargetException
 * @throws ElementException
 */
protected static void genericHandler(final XConfigCriteria configCriteria, final Object object, final Cell cell)
        throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, ElementException {
    if (configCriteria.getElement().isFormula()) {
        if (!toFormula(configCriteria, cell)) {
            // apply the formula
            CellValueHandler.consumeValue(cell, toExplicitFormula(object, configCriteria.getField()));
        }
    } else {
        // normal manage cell
        if (StringUtils.isNotBlank(configCriteria.getElement().transformMask())) {
            DecimalFormat df = new DecimalFormat(configCriteria.getElement().transformMask());
            CellValueHandler.consumeValue(cell,
                    df.format(configCriteria.getField().get(object)).replace(Constants.COMMA, Constants.DOT));
        } else {
            // apply the value
            CellValueHandler.consumeValue(cell, configCriteria.getField().get(object));
        }
    }
}

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