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:net.sf.jasperreports.functions.standard.MathFunctions.java

private static Number fixNumberReturnType(Number returnValue, Number... numbers) {
    if (haveSameType(Integer.class, numbers))
        return returnValue.intValue();
    if (haveSameType(Long.class, numbers))
        return returnValue.longValue();
    if (haveSameType(Float.class, numbers))
        return returnValue.floatValue();
    return returnValue.doubleValue();
}

From source file:de.christianseipl.utilities.maputils.MapMath.java

/**
 * Fhrt die {@link Math#round(double)} Operation auf jedem Element der Map
 * durch//  w w  w  .  jav a  2  s  .c  om
 * 
 * @param <K> ein beliebiger Objekttyp
 *            
 * @param _map
 *            Die Ursprungsmap
 * @return Eine neue Map, deren Wert das Ergebnis von
 *         {@link Math#round(double)} darstellen.
 */
public static <K> Map<K, Double> round(Map<? extends K, ? extends Number> _map) {
    return operateOnMap(_map, new NumberTransformer<K, Double>() {

        @Override
        public Double transform(K _key, Number _number) {
            return Double.valueOf(Math.round(_number.doubleValue()));
        }

    });
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a float primitive.
 * /*from  w w  w.j a  va2  s.c  o m*/
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Float value.
 */
public static Float formatFloat(String value, Locale locale) {
    Float result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= (Float.MAX_VALUE * -1) && num.doubleValue() <= Float.MAX_VALUE) {
                result = new Float(num.floatValue());
            }
        }
    }

    return result;
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a double primitive.
 * /*from  w  w w .  j a  v  a 2  s  .c  o m*/
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Double value.
 */
public static Double formatDouble(String value, Locale locale) {
    Double result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= (Double.MAX_VALUE * -1) && num.doubleValue() <= Double.MAX_VALUE) {
                result = new Double(num.doubleValue());
            }
        }
    }

    return result;
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a byte primitive.
 * /* www.  j  a v  a 2s  .  com*/
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Byte value.
 */
public static Byte formatByte(String value, Locale locale) {
    Byte result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Byte.MIN_VALUE && num.doubleValue() <= Byte.MAX_VALUE) {
                result = new Byte(num.byteValue());
            }
        }
    }

    return result;
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a short primitive.
 * //w w  w. j a  v  a  2  s  .  c om
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)vv
 * @return the converted Short value.
 */
public static Short formatShort(String value, Locale locale) {
    Short result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Short.MIN_VALUE && num.doubleValue() <= Short.MAX_VALUE) {
                result = new Short(num.shortValue());
            }
        }
    }

    return result;
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to an int primitive.
 * /*w  w w. j a  v  a 2  s.  c  om*/
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Integer value.
 */
public static Integer formatInt(String value, Locale locale) {
    Integer result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Integer.MIN_VALUE && num.doubleValue() <= Integer.MAX_VALUE) {
                result = new Integer(num.intValue());
            }
        }
    }

    return result;
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a long primitive.
 * //  www .ja  v  a 2  s. co  m
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Long value.
 */
public static Long formatLong(String value, Locale locale) {
    Long result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Long.MIN_VALUE && num.doubleValue() <= Long.MAX_VALUE) {
                result = new Long(num.longValue());
            }
        }
    }

    return result;
}

From source file:de.christianseipl.utilities.maputils.MapMath.java

/**
 * Fhrt die {@link MathUtils#round(double, int)} Operation auf jedem Element der Map
 * durch. Die Anzahl an signifikanten Stellen kann hierbei vorgegeben werden.
 * //from  w w w  . j av a  2s  .c  o  m
 * @param <K> ein beliebiger Objekttyp
 *            
 * @param _map
 *            Die Ursprungsmap
 * @param _scale Die Anzahl an signifikanten Stellen.
 * @return Eine neue Map, deren Wert das Ergebnis von
 *         {@link Math#round(double)} darstellen.
 */
public static <K> Map<K, Double> round(Map<? extends K, ? extends Number> _map, final int _scale) {
    return operateOnMap(_map, new NumberTransformer<K, Double>() {

        @Override
        public Double transform(K _key, Number _number) {
            return Double.valueOf(MathUtils.round(_number.doubleValue(), _scale));
        }

    });
}

From source file:com.ning.metrics.serialization.event.SmileEnvelopeEvent.java

private static void addToTree(ObjectNode root, String name, Object value) {
    /* could wrap everything as POJONode, but that's bit inefficient;
     * so let's handle some known cases.
     * (in reality, I doubt there could ever be non-scalars, FWIW, since
     * downstream systems expect simple key/value data)
     *///from w w w .  j a va 2  s  .co m
    if (value instanceof String) {
        root.put(name, (String) value);
        return;
    }
    if (value instanceof Number) {
        Number num = (Number) value;
        if (value instanceof Integer) {
            root.put(name, num.intValue());
        } else if (value instanceof Long) {
            root.put(name, num.longValue());
        } else if (value instanceof Double) {
            root.put(name, num.doubleValue());
        } else {
            root.putPOJO(name, num);
        }
    } else if (value == Boolean.TRUE) {
        root.put(name, true);
    } else if (value == Boolean.FALSE) {
        root.put(name, false);
    } else { // most likely Date
        root.putPOJO(name, value);
    }
}