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:demo.config.PropertyConverter.java

/**
 * Convert the specified object into a Double.
 * /*from   w  w w .j  a  v a  2s.  c om*/
 * @param value
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a Double
 */
public static Double toDouble(Object value) throws ConversionException {
    Number n = toNumber(value, Double.class);
    if (n instanceof Double) {
        return (Double) n;
    } else {
        return new Double(n.doubleValue());
    }
}

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From source file:Main.java

@Override
public void start(Stage stage) {
    Group root = new Group();
    Scene scene = new Scene(root, 500, 200);
    stage.setScene(scene);/*from ww w.  j av  a 2 s.co m*/

    ScrollBar s1 = new ScrollBar();

    s1.valueProperty().addListener((ObservableValue<? extends Number> ov, Number old_val, Number new_val) -> {
        System.out.println(-new_val.doubleValue());
    });
    root.getChildren().add(s1);
    stage.show();
}

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From source file:lodsve.core.config.properties.PropertyConverter.java

/**
 * Convert the specified object into a BigDecimal.
 * /*from w w  w  . jav a  2 s.co m*/
 * @param value
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a BigDecimal
 */
public static BigDecimal toBigDecimal(Object value) throws ConversionException {
    Number n = toNumber(value, BigDecimal.class);
    if (n instanceof BigDecimal) {
        return (BigDecimal) n;
    } else {
        return new BigDecimal(n.doubleValue());
    }
}

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From source file:demo.config.PropertyConverter.java

/**
 * Convert the specified object into a BigDecimal.
 * //from w ww. ja va  2 s  .  co m
 * @param value
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a BigDecimal
 */
public static BigDecimal toBigDecimal(Object value) throws ConversionException {
    Number n = toNumber(value, BigDecimal.class);
    if (n instanceof BigDecimal) {
        return (BigDecimal) n;
    } else {
        return BigDecimal.valueOf(n.doubleValue());
    }
}

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From source file:Main.java

/**
 * convert value to given type./*w  w  w.ja va  2 s.  co m*/
 * null safe.
 *
 * @param value value for convert
 * @param type  will converted type
 * @return value while converted
 */
public static Object convertCompatibleType(Object value, Class<?> type) {

    if (value == null || type == null || type.isAssignableFrom(value.getClass())) {
        return value;
    }
    if (value instanceof String) {
        String string = (String) value;
        if (char.class.equals(type) || Character.class.equals(type)) {
            if (string.length() != 1) {
                throw new IllegalArgumentException(String.format("CAN NOT convert String(%s) to char!"
                        + " when convert String to char, the String MUST only 1 char.", string));
            }
            return string.charAt(0);
        } else if (type.isEnum()) {
            return Enum.valueOf((Class<Enum>) type, string);
        } else if (type == BigInteger.class) {
            return new BigInteger(string);
        } else if (type == BigDecimal.class) {
            return new BigDecimal(string);
        } else if (type == Short.class || type == short.class) {
            return Short.valueOf(string);
        } else if (type == Integer.class || type == int.class) {
            return Integer.valueOf(string);
        } else if (type == Long.class || type == long.class) {
            return Long.valueOf(string);
        } else if (type == Double.class || type == double.class) {
            return Double.valueOf(string);
        } else if (type == Float.class || type == float.class) {
            return Float.valueOf(string);
        } else if (type == Byte.class || type == byte.class) {
            return Byte.valueOf(string);
        } else if (type == Boolean.class || type == boolean.class) {
            return Boolean.valueOf(string);
        } else if (type == Date.class) {
            try {
                return new SimpleDateFormat(DATE_FORMAT).parse((String) value);
            } catch (ParseException e) {
                throw new IllegalStateException("Failed to parse date " + value + " by format " + DATE_FORMAT
                        + ", cause: " + e.getMessage(), e);
            }
        } else if (type == Class.class) {
            return forName((String) value);
        }
    } else if (value instanceof Number) {
        Number number = (Number) value;
        if (type == byte.class || type == Byte.class) {
            return number.byteValue();
        } else if (type == short.class || type == Short.class) {
            return number.shortValue();
        } else if (type == int.class || type == Integer.class) {
            return number.intValue();
        } else if (type == long.class || type == Long.class) {
            return number.longValue();
        } else if (type == float.class || type == Float.class) {
            return number.floatValue();
        } else if (type == double.class || type == Double.class) {
            return number.doubleValue();
        } else if (type == BigInteger.class) {
            return BigInteger.valueOf(number.longValue());
        } else if (type == BigDecimal.class) {
            return BigDecimal.valueOf(number.doubleValue());
        } else if (type == Date.class) {
            return new Date(number.longValue());
        }
    } else if (value instanceof Collection) {
        Collection collection = (Collection) value;
        if (type.isArray()) {
            int length = collection.size();
            Object array = Array.newInstance(type.getComponentType(), length);
            int i = 0;
            for (Object item : collection) {
                Array.set(array, i++, item);
            }
            return array;
        } else if (!type.isInterface()) {
            try {
                Collection result = (Collection) type.newInstance();
                result.addAll(collection);
                return result;
            } catch (Throwable e) {
                e.printStackTrace();
            }
        } else if (type == List.class) {
            return new ArrayList<>(collection);
        } else if (type == Set.class) {
            return new HashSet<>(collection);
        }
    } else if (value.getClass().isArray() && Collection.class.isAssignableFrom(type)) {
        Collection collection;
        if (!type.isInterface()) {
            try {
                collection = (Collection) type.newInstance();
            } catch (Throwable e) {
                collection = new ArrayList<>();
            }
        } else if (type == Set.class) {
            collection = new HashSet<>();
        } else {
            collection = new ArrayList<>();
        }
        int length = Array.getLength(value);
        for (int i = 0; i < length; i++) {
            collection.add(Array.get(value, i));
        }
        return collection;
    }
    return value;
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    Group root = new Group();
    Scene scene = new Scene(root, 600, 400);
    stage.setScene(scene);//from ww w  . j a va  2s  .  co  m
    stage.setTitle("Slider Sample");

    GridPane grid = new GridPane();
    grid.setPadding(new Insets(10, 10, 10, 10));
    grid.setVgap(10);
    grid.setHgap(70);

    scene.setRoot(grid);

    GridPane.setConstraints(opacityCaption, 0, 1);
    grid.getChildren().add(opacityCaption);

    opacityLevel.valueProperty().addListener(new ChangeListener<Number>() {
        public void changed(ObservableValue<? extends Number> ov, Number old_val, Number new_val) {
            System.out.println(new_val.doubleValue());
            opacityValue.setText(String.format("%.2f", new_val));
        }
    });

    GridPane.setConstraints(opacityLevel, 1, 1);
    grid.getChildren().add(opacityLevel);

    GridPane.setConstraints(opacityValue, 2, 1);
    grid.getChildren().add(opacityValue);

    stage.show();
}

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From source file:com.bdb.weather.display.RainItemLabelGenerator.java

@Override
public String generateLabel(CategoryDataset dataset, int row, int column) {
    Number value = dataset.getValue(row, column);
    if (value.doubleValue() == 0.0)
        return null;
    else//from   ww  w .  ja v  a2s.  c o m
        return super.generateLabel(dataset, row, column);
}

---

From source file:gov.redhawk.statistics.ui.internal.Stats.java

public Stats(Number[] initialDoubleArray) {
    for (Number d : initialDoubleArray) {
        addValue(d.doubleValue());
    }//from   w  ww .  j  a v  a  2  s  .com
    length = initialDoubleArray.length;
}

---

From source file:io.fabric8.jolokia.support.JolokiaHelpers.java

public static Object convertJolokiaToJavaType(Class<?> clazz, Object value) throws IOException {
    if (clazz.isArray()) {
        if (value instanceof JSONArray) {
            JSONArray jsonArray = (JSONArray) value;
            Object[] javaArray = (Object[]) Array.newInstance(clazz.getComponentType(), jsonArray.size());
            int idx = 0;
            for (Object element : jsonArray) {
                Array.set(javaArray, idx++, convertJolokiaToJavaType(clazz.getComponentType(), element));
            }//  w  w w  .j  a  va2s .c  o  m
            return javaArray;
        } else {
            return null;
        }
    } else if (String.class.equals(clazz)) {
        return (value != null) ? value.toString() : null;
    } else if (clazz.equals(Byte.class) || clazz.equals(byte.class)) {
        Number number = asNumber(value);
        return number != null ? number.byteValue() : null;
    } else if (clazz.equals(Short.class) || clazz.equals(short.class)) {
        Number number = asNumber(value);
        return number != null ? number.shortValue() : null;
    } else if (clazz.equals(Integer.class) || clazz.equals(int.class)) {
        Number number = asNumber(value);
        return number != null ? number.intValue() : null;
    } else if (clazz.equals(Long.class) || clazz.equals(long.class)) {
        Number number = asNumber(value);
        return number != null ? number.longValue() : null;
    } else if (clazz.equals(Float.class) || clazz.equals(float.class)) {
        Number number = asNumber(value);
        return number != null ? number.floatValue() : null;
    } else if (clazz.equals(Double.class) || clazz.equals(double.class)) {
        Number number = asNumber(value);
        return number != null ? number.doubleValue() : null;
    } else if (value instanceof JSONObject) {
        JSONObject jsonObject = (JSONObject) value;
        if (!JSONObject.class.isAssignableFrom(clazz)) {
            String json = jsonObject.toJSONString();
            return getObjectMapper().readerFor(clazz).readValue(json);
        }
    }
    return value;
}

---

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

/**
 * ./* w ww  . j  a  v  a 2 s.  c om*/
 * 
 * <pre>
 * {@code
 *   Example 1:  
 *      NumberUtil.getProgress(5, 5, "##%")
 *      return 100%
 *   
 *   Example 2:
 *      NumberUtil.getProgress(2, 3, "#0.0%")
 *      return 66.7%
 * }
 * </pre>
 *
 * @param current
 *            ??
 * @param total
 *            ?
 * @param numberPattern
 *            the number pattern {@link NumberPattern}
 * @return ?numberPattern  50.5%,100%.....
 * @see NumberPattern
 * @since 1.0.7
 */
public static String getProgress(Number current, Number total, String numberPattern) {
    if (null == current) {
        throw new NullPointerException("current is null");
    }
    if (null == total) {
        throw new NullPointerException("total is null");
    }

    if (current.intValue() <= 0) {
        throw new IllegalArgumentException("current can not <=0");
    }
    if (total.intValue() <= 0) {
        throw new IllegalArgumentException("total can not <=0");
    }

    if (current.doubleValue() > total.doubleValue()) {
        throw new IllegalArgumentException("current can not > total");
    }
    // XXX
    int scale = 8;
    BigDecimal bigDecimalCurrent = ConvertUtil.toBigDecimal(current);
    BigDecimal divideValue = getDivideValue(bigDecimalCurrent, total, scale);
    return toString(divideValue, numberPattern);
}

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