Java Array From toArray(long value, byte[] dest, int offset, int length)

Description

Converts a long value to a short array.
The long value could be positive or negative.

License

Open Source License

Parameter

Parameter	Description
value	The long value
dest	The destination array
offset	The offset inside the array
length	The length of the array

Declaration

public static void toArray(long value, byte[] dest, int offset, int length) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**/*from w  w  w.  j av a2s .  c  o  m*/
     * Converts a long value to a short array.<br>
     * The long value could be positive or negative. The result will be set into
     * the array from lowest to highest, truncating bytes if the length of the
     * array is too small. The array will be sorted in Low-To-High-Order!
     *
     * e.g.:<br>
     * 530 dec is 0212 hex, so with length 2 it will be [0]=0x12,[1]=0x02<br>
     * 530 dec is 0212 hex, so with length 3 it will be
     * [0]=0x12,[1]=0x02,[2]=0x00<br>
     *
     * @param value
     *            The long value
     * @param dest
     *            The destination array
     * @param offset
     *            The offset inside the array
     * @param length
     *            The length of the array
     */
    public static void toArray(long value, byte[] dest, int offset, int length) {
        for (int x = 0; x < length; x++) {
            dest[offset + x] = (byte) (value >>> (8 * x));
        }
    }

    /**
     * Converts a float value to a short array.<br>
     * The float value could be positive or negative. The result will be set
     * into the array from lowest to highest, truncating bytes if the length of
     * the array is too small. The array will be sorted in Low-To-High-Order!
     *
     * e.g.:<br>
     * 530 dec is 0212 hex, so with length 2 it will be [0]=0x12,[1]=0x02<br>
     * 530 dec is 0212 hex, so with length 3 it will be
     * [0]=0x12,[1]=0x02,[2]=0x00<br>
     *
     * @param value
     *            The float value
     * @param dest
     *            The destination array
     * @param offset
     *            The offset inside the array
     * @param length
     *            The length of the array
     */
    public static void toArray(float value, byte[] dest, int offset, int length) {
        toArray(convertFloatToHex(value), dest, offset, length);
    }

    /**
     * Convert a float value to a hex value given as a long.<br>
     *
     * @param floatValue
     *            The float value
     * @return The hex value
     */
    public static long convertFloatToHex(float floatValue) {
        return Float.floatToIntBits(floatValue) & 0xFFFFFFFFL;
    }
}

Related

1. toArray(int value)
2. toArray(int value, byte b[], int offset)
3. toArray(int[] intArray)
4. toArray(Iterable itr)
5. toArray(long l, byte[] b, int offset)
6. toArray(Object a)
7. toArray(Object foo)
8. toArray(Object o)
9. toArray(Object... args)