Example usage for java.lang Number longValue

Introduction

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

Prototype

public abstract long longValue();

Source Link

Document

Returns the value of the specified number as a long .

Usage

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the value of adding the two numbers
 * //ww w.  j  a va 2s.  co  m
 * @param a the first number
 * @param b the second number
 * @return the value of adding the two numbers
 */
public static Number add(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return a.doubleValue() + b.doubleValue();
    } else {
        return a.longValue() + b.longValue();
    }
}

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From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the value of subtracting the first from the second number.
 * /*from   w w w .ja  v a  2 s.  co m*/
 * @param a the first number
 * @param b the second number
 * @return the value of subtracting the first from the second number
 */
public static Number sub(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return a.doubleValue() - b.doubleValue();
    } else {
        return a.longValue() - b.longValue();
    }
}

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From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the value of multiplying the two numbers.
 * /*  ww  w. ja  va2  s.  c o  m*/
 * @param a the first number
 * @param b the second number
 * @return the value of multiplying the two numbers
 */
public static Number mul(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return a.doubleValue() * b.doubleValue();
    } else {
        return a.longValue() * b.longValue();
    }
}

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From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns {@code true} if the two numbers are equal; {@code false}
 * otherwise./*from ww w . j a v  a  2s  . c om*/
 * 
 * @param a the first number
 * @param b the second number
 * @return {@code true} if the two numbers are equal; {@code false}
 *         otherwise
 */
public static boolean equals(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return a.doubleValue() == b.doubleValue();
    } else {
        return a.longValue() == b.longValue();
    }
}

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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));
            }//from  ww  w  . j av a2  s  . c  om
            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:Main.java

/**
 * Divides num1 by num2, and return the result in the correct number class.
 * //from   w ww .  j  ava 2 s .c  o m
 * @param num1 numerator
 * @param num2 denominator
 * @return num1/num2 in the most appropriate class
 */
static Number divide(Number num1, Number num2) {
    Number[] both = new Number[2];
    both[0] = num1;
    both[1] = num2;

    Number division = (Number) getObject(both);

    if (division == null) {
        return null;
    }

    //Integer, Long, Float, Double
    if (division instanceof Integer) {
        //we've got 2 integers, but we're going to use double anyways
        return new Double(num1.doubleValue() / num2.doubleValue());
    } else if (division instanceof Long) {
        return new Long(num1.longValue() / num2.longValue());
    } else if (division instanceof Float) {
        return new Float(num1.floatValue() / num2.floatValue());
    } else if (division instanceof Double) {
        return new Double(num1.doubleValue() / num2.doubleValue());
    } else {
        return null;
    }
}

---

From source file:org.crazydog.util.spring.NumberUtils.java

/**
 * Convert the given number into an instance of the given target class.
 *
 * @param number      the number to convert
 * @param targetClass the target class to convert to
 * @return the converted number//from   ww  w  . j  a  v  a  2 s . c o  m
 * @throws IllegalArgumentException if the target class is not supported
 *                                  (i.e. not a standard Number subclass as included in the JDK)
 * @see Byte
 * @see Short
 * @see Integer
 * @see Long
 * @see BigInteger
 * @see Float
 * @see Double
 * @see BigDecimal
 */
@SuppressWarnings("unchecked")
public static <T extends Number> T convertNumberToTargetClass(Number number, Class<T> targetClass)
        throws IllegalArgumentException {

    org.springframework.util.Assert.notNull(number, "Number must not be null");
    org.springframework.util.Assert.notNull(targetClass, "Target class must not be null");

    if (targetClass.isInstance(number)) {
        return (T) number;
    } else if (Byte.class == targetClass) {
        long value = number.longValue();
        if (value < Byte.MIN_VALUE || value > Byte.MAX_VALUE) {
            raiseOverflowException(number, targetClass);
        }
        return (T) new Byte(number.byteValue());
    } else if (Short.class == targetClass) {
        long value = number.longValue();
        if (value < Short.MIN_VALUE || value > Short.MAX_VALUE) {
            raiseOverflowException(number, targetClass);
        }
        return (T) new Short(number.shortValue());
    } else if (Integer.class == targetClass) {
        long value = number.longValue();
        if (value < Integer.MIN_VALUE || value > Integer.MAX_VALUE) {
            raiseOverflowException(number, targetClass);
        }
        return (T) new Integer(number.intValue());
    } else if (Long.class == targetClass) {
        BigInteger bigInt = null;
        if (number instanceof BigInteger) {
            bigInt = (BigInteger) number;
        } else if (number instanceof BigDecimal) {
            bigInt = ((BigDecimal) number).toBigInteger();
        }
        // Effectively analogous to JDK 8's BigInteger.longValueExact()
        if (bigInt != null && (bigInt.compareTo(LONG_MIN) < 0 || bigInt.compareTo(LONG_MAX) > 0)) {
            raiseOverflowException(number, targetClass);
        }
        return (T) new Long(number.longValue());
    } else if (BigInteger.class == targetClass) {
        if (number instanceof BigDecimal) {
            // do not lose precision - use BigDecimal's own conversion
            return (T) ((BigDecimal) number).toBigInteger();
        } else {
            // original value is not a Big* number - use standard long conversion
            return (T) BigInteger.valueOf(number.longValue());
        }
    } else if (Float.class == targetClass) {
        return (T) new Float(number.floatValue());
    } else if (Double.class == targetClass) {
        return (T) new Double(number.doubleValue());
    } else if (BigDecimal.class == targetClass) {
        // always use BigDecimal(String) here to avoid unpredictability of BigDecimal(double)
        // (see BigDecimal javadoc for details)
        return (T) new BigDecimal(number.toString());
    } else {
        throw new IllegalArgumentException("Could not convert number [" + number + "] of type ["
                + number.getClass().getName() + "] to unknown target class [" + targetClass.getName() + "]");
    }
}

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From source file:com.discovery.darchrow.http.ResponseUtil.java

/**
 * Down load data./*from   w  w w.j  a v a  2  s .  c o  m*/
 *
 * @param saveFileName
 *            the save file name
 * @param inputStream
 *            the input stream
 * @param contentLength
 *            the content length
 * @param request
 *            the request
 * @param response
 *            the response
 * @throws UncheckedIOException
 *             the unchecked io exception
 */
private static void downLoadData(String saveFileName, InputStream inputStream, Number contentLength,
        HttpServletRequest request, HttpServletResponse response) throws UncheckedIOException {
    Date beginDate = new Date();

    if (log.isInfoEnabled()) {
        log.info("begin download~~,saveFileName:[{}],contentLength:[{}]", saveFileName,
                FileUtil.formatSize(contentLength.longValue()));
    }
    try {
        OutputStream outputStream = response.getOutputStream();

        //? 
        //inputStream.read(buffer);
        //outputStream = new BufferedOutputStream(response.getOutputStream());
        //outputStream.write(buffer);

        IOWriteUtil.write(inputStream, outputStream);
        if (log.isInfoEnabled()) {
            Date endDate = new Date();
            log.info("end download,saveFileName:[{}],contentLength:[{}],time use:[{}]", saveFileName,
                    FileUtil.formatSize(contentLength.longValue()),
                    DateExtensionUtil.getIntervalForView(beginDate, endDate));
        }
    } catch (IOException e) {
        /*
         * ?  ClientAbortException  ????? 
         * ?? ??
         * ???????
         * ? KILL? ?? ClientAbortException
         */
        //ClientAbortException:  java.net.SocketException: Connection reset by peer: socket write error
        final String exceptionName = e.getClass().getName();

        if (StringUtil.isContain(exceptionName, "ClientAbortException")
                || StringUtil.isContain(e.getMessage(), "ClientAbortException")) {
            log.warn(
                    "[ClientAbortException],maybe user use Thunder soft or abort client soft download,exceptionName:[{}],exception message:[{}] ,request User-Agent:[{}]",
                    exceptionName, e.getMessage(), RequestUtil.getHeaderUserAgent(request));
        } else {
            log.error("[download exception],exception name: " + exceptionName, e);
            throw new UncheckedIOException(e);
        }
    }
}

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From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the maximum value of two numbers.
 * //from w  w w.  j  av  a 2s . c  o m
 * @param a the first number
 * @param b the second number
 * @return the maximum value of two numbers
 * @see Math#min(long, long)
 * @see Math#min(double, double)
 */
public static Number max(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return Math.max(a.doubleValue(), b.doubleValue());
    } else {
        return Math.max(a.longValue(), b.longValue());
    }
}

---

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the minimum value of two numbers.
 * //from w  w  w.java  2 s.com
 * @param a the first number
 * @param b the second number
 * @return the minimum value of two numbers
 * @see Math#max(long, long)
 * @see Math#max(double, double)
 */
public static Number min(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        return Math.min(a.doubleValue(), b.doubleValue());
    } else {
        return Math.min(a.longValue(), b.longValue());
    }
}

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