Example usage for java.lang Number doubleValue

Introduction

In this page you can find the example usage for java.lang Number doubleValue.

Prototype

public abstract double doubleValue();

Source Link

Document

Returns the value of the specified number as a double .

Usage

From source file:com.gisgraphy.util.CurrencyConverter.java

/**
 * Convert a String to a Double and a Double to a String
 * /*from ww w.  ja  v  a2 s . c  om*/
 * @param type
 *                the class type to output
 * @param value
 *                the object to convert
 * @return object the converted object (Double or String)
 */
@SuppressWarnings("unchecked")
public final Object convert(final Class type, final Object value) {
    // for a null value, return null
    if (value == null) {
        return null;
    } else {
        if (value instanceof String) {
            if (log.isDebugEnabled()) {
                log.debug("value (" + value + ") instance of String");
            }

            try {
                if (StringUtils.isBlank(String.valueOf(value))) {
                    return null;
                }

                if (log.isDebugEnabled()) {
                    log.debug("converting '" + value + "' to a decimal");
                }

                // formatter.setDecimalSeparatorAlwaysShown(true);
                Number num = formatter.parse(String.valueOf(value));

                return num.doubleValue();
            } catch (ParseException pe) {
            }
        } else if (value instanceof Double) {
            if (log.isDebugEnabled()) {
                log.debug("value (" + value + ") instance of Double");
                log.debug("returning double: " + formatter.format(value));
            }

            return formatter.format(value);
        }
    }

    throw new ConversionException("Could not convert " + value + " to " + type.getName() + "!");
}

From source file:com.agloco.util.StringUtil.java

private static String format(Number n, String format) {
    if (n == null)
        return "";
    NumberFormat f = new DecimalFormat(format);
    return f.format(n.doubleValue());
}

From source file:org.jfree.data.xy.AbstractXYDataset.java

/**
 * Returns the x-value (as a double primitive) for an item within a series.
 *
 * @param series  the series index (zero-based).
 * @param item  the item index (zero-based).
 *
 * @return The value.//from   www . j a v  a 2s  .  co  m
 */
public double getXValue(int series, int item) {
    double result = Double.NaN;
    Number x = getX(series, item);
    if (x != null) {
        result = x.doubleValue();
    }
    return result;
}

From source file:org.jfree.data.xy.AbstractXYDataset.java

/**
 * Returns the y-value (as a double primitive) for an item within a series.
 *
 * @param series  the series index (zero-based).
 * @param item  the item index (zero-based).
 *
 * @return The value./*from w ww  . j  a v a  2  s .c  o m*/
 */
public double getYValue(int series, int item) {
    double result = Double.NaN;
    Number y = getY(series, item);
    if (y != null) {
        result = y.doubleValue();
    }
    return result;
}

From source file:net.sf.zekr.common.util.VelocityUtils.java

public Integer round(Object num) {
    Number n = toDouble(num);
    return new Integer((int) Math.rint(n.doubleValue()));
}

From source file:edu.uci.ics.jung.io.TestGraphMLWriter.java

public void testMixedGraph() throws IOException, ParserConfigurationException, SAXException {
    Graph<String, Number> g = TestGraphs.getSmallGraph();
    GraphMLWriter<String, Number> gmlw = new GraphMLWriter<String, Number>();
    Transformer<Number, String> edge_weight = new Transformer<Number, String>() {
        public String transform(Number n) {
            return String.valueOf(n.doubleValue());
        }// w  w w . ja  v  a 2s. c om
    };

    gmlw.addEdgeData("weight", "integer value for the edge", Integer.toString(-1), edge_weight);
    gmlw.setEdgeIDs(edge_weight);
    gmlw.save(g, new FileWriter("src/test/resources/testmixedgraph.graphml"));

    // TODO: now read it back in and compare the graph connectivity 
    // and other metadata with what's in TestGraphs, etc.
    GraphMLReader<Graph<String, Object>, String, Object> gmlr = new GraphMLReader<Graph<String, Object>, String, Object>();
    Graph<String, Object> g2 = new SparseMultigraph<String, Object>();
    gmlr.load("src/test/resources/testmixedgraph.graphml", g2);
    Map<String, GraphMLMetadata<Object>> edge_metadata = gmlr.getEdgeMetadata();
    Transformer<Object, String> edge_weight2 = edge_metadata.get("weight").transformer;
    validateTopology(g, g2, edge_weight, edge_weight2);

    // TODO: delete graph file when done
    File f = new File("src/test/resources/testmixedgraph.graphml");
    f.delete();
}

From source file:com.att.aro.ui.view.overviewtab.PercentLabelGenerator.java

/**
 * Returns a percentage label string using the data in the specified row and
 * column of the dataset./* www  .  j  a  v  a  2  s  .  com*/
 * 
 * @param dataset
 *            The dataset containing the data for the chart.
 * 
 * @param row
 *            The row of data in the dataset.
 * 
 * @param column
 *            The column of data in the dataset.
 * 
 * @return A string that is the percentage label.
 */
@Override
public String generateLabel(CategoryDataset dataset, int row, int column) {
    Number value = dataset.getValue(row, column);
    String gLabel = "";
    if (CommonHelper.isNotNull(value)) {
        gLabel = formatter.format(value.doubleValue());
    }
    return gLabel;
}

From source file:com.bstek.dorado.data.variant.DefaultVariantConvertor.java

public double toDouble(Object object) {
    Number n = (Number) doubleDateType.convertFromObject(object);
    return n.doubleValue();
}

From source file:com.espertech.esperio.representation.axiom.AxiomXPathPropertyGetter.java

public Object get(EventBean eventBean) throws PropertyAccessException {
    Object und = eventBean.getUnderlying();
    if (und == null) {
        throw new PropertyAccessException(
                "Unexpected null underlying event encountered, expecting org.w3c.dom.Node instance as underlying");
    }//  w  w  w  .  j a  v a2 s. c  om
    if (!(und instanceof OMNode)) {
        throw new PropertyAccessException("Unexpected underlying event of type '" + und.getClass()
                + "' encountered, expecting org.w3c.dom.Node as underlying");
    }
    try {
        // if there is no parser, return xpath expression type
        if (optionalCastToType == null) {
            if (resultType.equals(XPathConstants.BOOLEAN)) {
                return expression.booleanValueOf(und);
            } else if (resultType.equals(XPathConstants.NUMBER)) {
                Number n = expression.numberValueOf(und);
                return n.doubleValue();
            } else {
                String result = expression.stringValueOf(und);
                return result;
            }
        }

        // obtain result as string and parse
        String result = expression.stringValueOf(und);
        if (result == null) {
            return null;
        }

        try {
            return simpleTypeParser.parse(result.toString());
        } catch (RuntimeException ex) {
            log.warn("Error parsing XPath property named '" + property + "' expression result '" + result
                    + " as type " + optionalCastToType.getName());
            return null;
        }
    } catch (JaxenException e) {
        throw new PropertyAccessException("Error getting property '" + property + "' : " + e.getMessage(), e);
    }
}

From source file:gobblin.util.limiter.stressTest.RateComputingLimiterContainer.java

private @Nullable DescriptiveStatistics getNormalizedStatistics(String key,
        Collection<? extends Number> values) {
    long now = System.currentTimeMillis();

    long deltaTime = 0;
    if (this.lastReportTimes.containsKey(key)) {
        deltaTime = now - this.lastReportTimes.get(key);
    }/*  w w  w.j  a v a 2s.  co m*/
    this.lastReportTimes.put(key, now);

    if (deltaTime == 0) {
        return null;
    }

    double[] normalizedValues = new double[values.size()];
    int i = 0;
    for (Number value : values) {
        normalizedValues[i++] = 1000 * value.doubleValue() / deltaTime;
    }

    return new DescriptiveStatistics(normalizedValues);
}