Example usage for java.lang Number doubleValue

List of usage examples for java.lang Number doubleValue

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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:edu.brown.utils.CollectionUtil.java

/**
 * Convert a Collection of Numbers to an array of primitive doubles
 * Null values will be skipped in the array 
 * @param items/*from   w ww .  j a va2s .  co  m*/
 * @return
 */
public static double[] toDoubleArray(Collection<? extends Number> items) {
    double ret[] = new double[items.size()];
    int idx = 0;
    for (Number n : items) {
        if (n != null)
            ret[idx] = n.doubleValue();
        idx += 1;
    } // FOR
    return (ret);
}

From source file:nz.co.senanque.validationengine.ConvertUtils.java

public static Comparable<?> convertTo(Class<?> clazz, Object obj) {
    if (obj == null) {
        return null;
    }//from ww  w  . ja va  2s .c  o m
    if (clazz.isAssignableFrom(obj.getClass())) {
        return (Comparable<?>) obj;
    }
    if (clazz.isPrimitive()) {
        if (clazz.equals(Long.TYPE)) {
            clazz = Long.class;
        } else if (clazz.equals(Integer.TYPE)) {
            clazz = Integer.class;
        } else if (clazz.equals(Float.TYPE)) {
            clazz = Float.class;
        } else if (clazz.equals(Double.TYPE)) {
            clazz = Double.class;
        } else if (clazz.equals(Boolean.TYPE)) {
            clazz = Boolean.class;
        }
    }
    if (Number.class.isAssignableFrom(clazz)) {
        if (obj.getClass().equals(String.class)) {
            obj = new Double((String) obj);
        }
        if (!Number.class.isAssignableFrom(obj.getClass())) {
            throw new RuntimeException(
                    "Cannot convert from " + obj.getClass().getName() + " to " + clazz.getName());
        }
        Number number = (Number) obj;
        if (clazz.equals(Long.class)) {
            return new Long(number.longValue());
        }
        if (clazz.equals(Integer.class)) {
            return new Integer(number.intValue());
        }
        if (clazz.equals(Float.class)) {
            return new Float(number.floatValue());
        }
        if (clazz.equals(Double.class)) {
            return new Double(number.doubleValue());
        }
        if (clazz.equals(BigDecimal.class)) {
            return new BigDecimal(number.doubleValue());
        }
    }
    final String oStr = String.valueOf(obj);
    if (clazz.equals(String.class)) {
        return oStr;
    }
    if (clazz.equals(java.util.Date.class)) {
        return java.sql.Date.valueOf(oStr);
    }
    if (clazz.equals(java.sql.Date.class)) {
        return java.sql.Date.valueOf(oStr);
    }
    if (clazz.equals(Boolean.class)) {
        return new Boolean(oStr);
    }
    throw new RuntimeException("Cannot convert from " + obj.getClass().getName() + " to " + clazz.getName());
}

From source file:de.cebitec.readXplorer.util.GeneralUtils.java

/**
 * Converts a given number into a number of the given classType. If this is
 * not possible, it throws a ClassCastException
 * @param <T> one of the classes derived from Number
 * @param classType the type to convert the number into
 * @param number the number to convert//from w  w  w.  j a v a2  s.  co  m
 * @return The converted number
 */
public static <T extends Number> T convertNumber(Class<T> classType, Number number) throws ClassCastException {
    T convertedValue = null;
    if (classType.equals(Integer.class)) {
        convertedValue = classType.cast(number.intValue());
    } else if (classType.equals(Double.class)) {
        convertedValue = classType.cast(number.doubleValue());
    } else if (classType.equals(Long.class)) {
        convertedValue = classType.cast(number.longValue());
    } else if (classType.equals(Float.class)) {
        convertedValue = classType.cast(number.floatValue());
    } else if (classType.equals(Short.class)) {
        convertedValue = classType.cast(number.shortValue());
    } else if (classType.equals(Byte.class)) {
        convertedValue = classType.cast(number.byteValue());
    }

    if (convertedValue == null) {
        throw new ClassCastException("Cannot cast the given number into the given format.");
    }

    return convertedValue;
}

From source file:gov.nasa.jpf.constraints.solvers.cw.CWSolver.java

static double computeError(NumericComparator comparator, Number value) {
    return computeError(comparator, value.doubleValue());
}

From source file:net.refractions.udig.style.sld.editor.raster.SingleBandEditorPage.java

public static final void sortEntries(ColorMapEntry[] entries) {
    Arrays.sort(entries, new Comparator<ColorMapEntry>() {

        @Override//from  w w  w . j  a  v  a2  s. co m
        public int compare(ColorMapEntry c0, ColorMapEntry c1) {
            Number v1 = (Number) c0.getQuantity().evaluate(null, Double.class);
            Number v2 = (Number) c1.getQuantity().evaluate(null, Double.class);
            return ((Double) v1.doubleValue()).compareTo(v2.doubleValue());
        }
    });
}

From source file:org.hxzon.demo.jfreechart.PieDatasetDemo2.java

private static JFreeChart createPieChart(PieDataset dataset, PieDataset previousDataset) {
    final boolean greenForIncrease = true;
    final boolean subTitle = true;
    final boolean showDifference = true;
    int percentDiffForMaxScale = 20;
    PiePlot plot = new PiePlot(dataset);
    plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
    plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));

    if (tooltips) {
        plot.setToolTipGenerator(new StandardPieToolTipGenerator());
    }//from  w  w w.  jav a2  s . c o m
    if (urls) {
        plot.setURLGenerator(new StandardPieURLGenerator());
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    List<Comparable> keys = dataset.getKeys();
    DefaultPieDataset series = null;
    if (showDifference) {
        series = new DefaultPieDataset();
    }

    double colorPerPercent = 255.0 / percentDiffForMaxScale;
    for (@SuppressWarnings("rawtypes")
    Comparable key : keys) {
        Number newValue = dataset.getValue(key);
        Number oldValue = previousDataset.getValue(key);

        if (oldValue == null) {
            if (greenForIncrease) {
                plot.setSectionPaint(key, Color.green);
            } else {
                plot.setSectionPaint(key, Color.red);
            }
            if (showDifference) {
                series.setValue(key + " (+100%)", newValue);
            }
        } else {
            double percentChange = (newValue.doubleValue() / oldValue.doubleValue() - 1.0) * 100.0;
            double shade = (Math.abs(percentChange) >= percentDiffForMaxScale ? 255
                    : Math.abs(percentChange) * colorPerPercent);
            if (greenForIncrease && newValue.doubleValue() > oldValue.doubleValue()
                    || !greenForIncrease && newValue.doubleValue() < oldValue.doubleValue()) {
                plot.setSectionPaint(key, new Color(0, (int) shade, 0));
            } else {
                plot.setSectionPaint(key, new Color((int) shade, 0, 0));
            }
            if (showDifference) {
                series.setValue(
                        key + " (" + (percentChange >= 0 ? "+" : "")
                                + NumberFormat.getPercentInstance().format(percentChange / 100.0) + ")",
                        newValue);
            }
        }
    }

    if (showDifference) {
        plot.setDataset(series);
    }

    JFreeChart chart = new JFreeChart("Pie Chart Demo 2", JFreeChart.DEFAULT_TITLE_FONT, plot, legend);

    if (subTitle) {
        TextTitle subtitle = null;
        subtitle = new TextTitle("Bright " + (greenForIncrease ? "red" : "green") + "=change >=-"
                + percentDiffForMaxScale + "%, Bright " + (!greenForIncrease ? "red" : "green") + "=change >=+"
                + percentDiffForMaxScale + "%", new Font("SansSerif", Font.PLAIN, 10));
        chart.addSubtitle(subtitle);
    }
    plot.setNoDataMessage("No data available");

    return chart;

}

From source file:com.alibaba.wasp.plan.parser.druid.DruidParser.java

/**
 * The abstract class Number is the superclass of classes BigDecimal,
 * BigInteger, Byte, Double, Float, Integer, Long, and Short. Subclasses of
 * Number must provide methods to convert the represented numeric value to
 * byte, double, float, int, long, and short.
 *//*from ww w  . j a v  a  2  s.  c  o m*/
public static byte[] convert(DataType type, Number number) throws UnsupportedException {
    // BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, and Short.
    if (number instanceof BigDecimal) {
        if (type == DataType.FLOAT) {
            return Bytes.toBytes(number.floatValue());
        } else if (type == DataType.DOUBLE) {
            return Bytes.toBytes(number.doubleValue());
        } else if (type == DataType.INT32) {
            return Bytes.toBytes(number.intValue());
        } else if (type == DataType.INT64) {
            return Bytes.toBytes(number.longValue());
        }
        return Bytes.toBytes((BigDecimal) number);
    } else if (number instanceof BigInteger) {
        throw new UnsupportedException(" BigInteger " + number + " Unsupported");
    } else if (number instanceof Byte) {
        return Bytes.toBytes((Byte) number);
    } else if (number instanceof Double) {
        double value = number.doubleValue();
        if (type == DataType.FLOAT) {
            return Bytes.toBytes((float) value);
        } else if (type == DataType.DOUBLE) {
            return Bytes.toBytes(value);
        } else if (type == DataType.INT32) {
            int iv = (int) value;
            return Bytes.toBytes(iv);
        } else if (type == DataType.INT64) {
            long lv = (long) value;
            return Bytes.toBytes(lv);
        }
    } else if (number instanceof Float) {
        float value = number.floatValue();
        if (type == DataType.FLOAT) {
            return Bytes.toBytes(value);
        } else if (type == DataType.DOUBLE) {
            return Bytes.toBytes((float) value);
        } else if (type == DataType.INT32) {
            int iv = (int) value;
            return Bytes.toBytes(iv);
        } else if (type == DataType.INT64) {
            long lv = (long) value;
            return Bytes.toBytes(lv);
        }
    } else if (number instanceof Integer) {
        int value = number.intValue();
        if (type == DataType.INT32) {
            return Bytes.toBytes((Integer) value);
        } else if (type == DataType.INT64) {
            return Bytes.toBytes((long) value);
        } else if (type == DataType.FLOAT) {
            float fv = (float) value;
            return Bytes.toBytes(fv);
        } else if (type == DataType.DOUBLE) {
            double fv = (double) value;
            return Bytes.toBytes(fv);
        }
    } else if (number instanceof Long) {
        long value = number.longValue();
        if (type == DataType.INT32) {
            return Bytes.toBytes((int) value);
        } else if (type == DataType.INT64) {
            return Bytes.toBytes(value);
        } else if (type == DataType.FLOAT) {
            float fv = (float) value;
            return Bytes.toBytes(fv);
        } else if (type == DataType.DOUBLE) {
            double fv = (double) value;
            return Bytes.toBytes(fv);
        }
    } else if (number instanceof Short) {
        return Bytes.toBytes((Short) number);
    }
    throw new UnsupportedException("Unknown Number:" + number + " Type:" + type + " Unsupported ");
}

From source file:com.feilong.core.lang.NumberUtil.java

/**
 * .// w  w w  .j a  va  2  s  .co m
 * 
 * <pre class="code">
 * NumberUtil.getProgress(5, 5, NumberPattern.PERCENT_WITH_NOPOINT) =   100%
 * NumberUtil.getProgress(2, 3, NumberPattern.PERCENT_WITH_1POINT)  =   66.7%
 * </pre>
 *
 * @param current
 *            ??
 * @param total
 *            ?
 * @param numberPattern
 *            the number pattern {@link NumberPattern}
 * @return  <code>current</code> null, {@link NullPointerException}<br>
 *          <code>total</code> null, {@link NullPointerException}<br>
 *          {@code current<=0}, {@link IllegalArgumentException}<br>
 *          {@code total<=0}, {@link IllegalArgumentException}<br>
 *          {@code current>total}, {@link IllegalArgumentException}<br>
 * @see NumberPattern
 * @see #getDivideValue(Number, Number, int)
 * @since 1.0.7
 */
public static String getProgress(Number current, Number total, String numberPattern) {
    Validate.notNull(current, "current can't be null/empty!");
    Validate.notNull(total, "total can't be null/empty!");

    Validate.isTrue(current.intValue() > 0, "current can not <=0");
    Validate.isTrue(total.intValue() > 0, "total can not <=0");
    Validate.isTrue(current.doubleValue() <= total.doubleValue(), "current can not > total");

    // XXX  scale = 8?
    int scale = 8;
    BigDecimal bigDecimalCurrent = toBigDecimal(current);
    BigDecimal divideValue = getDivideValue(bigDecimalCurrent, total, scale);
    return toString(divideValue, numberPattern);
}

From source file:com.vk.sdk.api.model.ParseUtils.java

/**
* Parses object with follow rules://from  w w w .  j av  a  2 s  .c om
*
* 1. All fields should had a public access.
* 2. The name of the filed should be fully equal to name of JSONObject key.
* 3. Supports parse of all Java primitives, all {@link String},
* arrays of primitive types, {@link String}s and {@link com.vk.sdk.api.model.VKApiModel}s,
* list implementation line {@link com.vk.sdk.api.model.VKList}, {@link com.vk.sdk.api.model.VKAttachments.VKAttachment} or {@link com.vk.sdk.api.model.VKPhotoSizes},
* {@link com.vk.sdk.api.model.VKApiModel}s.
*
* 4. Boolean fields defines by vk_int == 1 expression.
* @param object object to initialize
* @param source data to read values
* @return initialized according with given data object
* @throws JSONException if source object structure is invalid
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
    if (source.has("response")) {
        source = source.optJSONObject("response");
    }
    if (source == null) {
        return object;
    }
    for (Field field : object.getClass().getFields()) {
        field.setAccessible(true);
        String fieldName = field.getName();
        Class<?> fieldType = field.getType();

        Object value = source.opt(fieldName);
        if (value == null) {
            continue;
        }
        try {
            if (fieldType.isPrimitive() && value instanceof Number) {
                Number number = (Number) value;
                if (fieldType.equals(int.class)) {
                    field.setInt(object, number.intValue());
                } else if (fieldType.equals(long.class)) {
                    field.setLong(object, number.longValue());
                } else if (fieldType.equals(float.class)) {
                    field.setFloat(object, number.floatValue());
                } else if (fieldType.equals(double.class)) {
                    field.setDouble(object, number.doubleValue());
                } else if (fieldType.equals(boolean.class)) {
                    field.setBoolean(object, number.intValue() == 1);
                } else if (fieldType.equals(short.class)) {
                    field.setShort(object, number.shortValue());
                } else if (fieldType.equals(byte.class)) {
                    field.setByte(object, number.byteValue());
                }
            } else {
                Object result = field.get(object);
                if (value.getClass().equals(fieldType)) {
                    result = value;
                } else if (fieldType.isArray() && value instanceof JSONArray) {
                    result = parseArrayViaReflection((JSONArray) value, fieldType);
                } else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKAttachments.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKList.class.equals(fieldType)) {
                    ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
                    Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
                    if (VKApiModel.class.isAssignableFrom(genericType)
                            && Parcelable.class.isAssignableFrom(genericType)
                            && Identifiable.class.isAssignableFrom(genericType)) {
                        if (value instanceof JSONArray) {
                            result = new VKList((JSONArray) value, genericType);
                        } else if (value instanceof JSONObject) {
                            result = new VKList((JSONObject) value, genericType);
                        }
                    }
                } else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
                    result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
                }
                field.set(object, result);
            }
        } catch (InstantiationException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodException e) {
            throw new JSONException(e.getMessage());
        } catch (InvocationTargetException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodError e) {
            // ?????????? ???????:
            // ?? ?? ????????, ?? ? ????????? ???????? getFields() ???????? ??? ???.
            // ?????? ? ??????? ???????????, ????????? ?? ? ????????, ?????? Android ? ???????? ????????? ??????????.
            throw new JSONException(e.getMessage());
        }
    }
    return object;
}

From source file:com.vk.sdkweb.api.model.ParseUtils.java

/**
 * Parses object with follow rules://w  ww . j  a va 2  s. c om
 *
 * 1. All fields should had a public access.
 * 2. The name of the filed should be fully equal to name of JSONObject key.
 * 3. Supports parse of all Java primitives, all {@link java.lang.String},
 *  arrays of primitive types, {@link java.lang.String}s and {@link com.vk.sdkweb.api.model.VKApiModel}s,
 *  list implementation line {@link com.vk.sdkweb.api.model.VKList}, {@link com.vk.sdkweb.api.model.VKAttachments.VKAttachment} or {@link com.vk.sdkweb.api.model.VKPhotoSizes},
 *  {@link com.vk.sdkweb.api.model.VKApiModel}s.
 *
 * 4. Boolean fields defines by vk_int == 1 expression.
 *
 * @param object object to initialize
 * @param source data to read values
 * @param <T> type of result
 * @return initialized according with given data object
 * @throws JSONException if source object structure is invalid
 */
@SuppressWarnings("rawtypes")
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
    if (source.has("response")) {
        source = source.optJSONObject("response");
    }
    if (source == null) {
        return object;
    }
    for (Field field : object.getClass().getFields()) {
        field.setAccessible(true);
        String fieldName = field.getName();
        Class<?> fieldType = field.getType();

        Object value = source.opt(fieldName);
        if (value == null) {
            continue;
        }
        try {
            if (fieldType.isPrimitive() && value instanceof Number) {
                Number number = (Number) value;
                if (fieldType.equals(int.class)) {
                    field.setInt(object, number.intValue());
                } else if (fieldType.equals(long.class)) {
                    field.setLong(object, number.longValue());
                } else if (fieldType.equals(float.class)) {
                    field.setFloat(object, number.floatValue());
                } else if (fieldType.equals(double.class)) {
                    field.setDouble(object, number.doubleValue());
                } else if (fieldType.equals(boolean.class)) {
                    field.setBoolean(object, number.intValue() == 1);
                } else if (fieldType.equals(short.class)) {
                    field.setShort(object, number.shortValue());
                } else if (fieldType.equals(byte.class)) {
                    field.setByte(object, number.byteValue());
                }
            } else {
                Object result = field.get(object);
                if (value.getClass().equals(fieldType)) {
                    result = value;
                } else if (fieldType.isArray() && value instanceof JSONArray) {
                    result = parseArrayViaReflection((JSONArray) value, fieldType);
                } else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKAttachments.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKList.class.equals(fieldType)) {
                    ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
                    Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
                    if (VKApiModel.class.isAssignableFrom(genericType)
                            && Parcelable.class.isAssignableFrom(genericType)
                            && Identifiable.class.isAssignableFrom(genericType)) {
                        if (value instanceof JSONArray) {
                            result = new VKList((JSONArray) value, genericType);
                        } else if (value instanceof JSONObject) {
                            result = new VKList((JSONObject) value, genericType);
                        }
                    }
                } else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
                    result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
                }
                field.set(object, result);
            }
        } catch (InstantiationException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodException e) {
            throw new JSONException(e.getMessage());
        } catch (InvocationTargetException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodError e) {
            //  ?:
            //   ,     getFields()   .
            //  ? ? ?,   ? ?,  Android  ?  .
            throw new JSONException(e.getMessage());
        }
    }
    return object;
}