Java Utililty Methods Byte Array Create

List of utility methods to do Byte Array Create

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Description

The list of methods to do Byte Array Create are organized into topic(s).

Method

byte[]toBytes(long number)
to Bytes 
long temp = number;
byte[] b = new byte[8];
for (int i = 0; i < b.length; i++) {
    b[i] = new Long(temp & 0xff).byteValue();
    temp = temp >> 8;
return b;
byte[]toBytes(long size)
to Bytes 
byte[] bytes = new byte[8];
bytes[0] = (byte) ((size >> 56) & 0xff);
bytes[1] = (byte) ((size >> 48) & 0xff);
bytes[2] = (byte) ((size >> 40) & 0xff);
bytes[3] = (byte) ((size >> 32) & 0xff);
bytes[4] = (byte) ((size >> 24) & 0xff);
bytes[5] = (byte) ((size >> 16) & 0xff);
bytes[6] = (byte) ((size >> 8) & 0xff);
...
byte[]toBytes(long v, byte[] writeBuffer, int o)
to Bytes 
writeBuffer[o + 0] = (byte) (v >>> 56);
writeBuffer[o + 1] = (byte) (v >>> 48);
writeBuffer[o + 2] = (byte) (v >>> 40);
writeBuffer[o + 3] = (byte) (v >>> 32);
writeBuffer[o + 4] = (byte) (v >>> 24);
writeBuffer[o + 5] = (byte) (v >>> 16);
writeBuffer[o + 6] = (byte) (v >>> 8);
writeBuffer[o + 7] = (byte) (v >>> 0);
...
byte[]toBytes(long val)
to Bytes 
return toBytes(val, 8);
byte[]toBytes(long value)
Convert a long number to a bytes array. 
byte[] memory = new byte[8];
toBytes(value, memory, 0);
return memory;
byte[]toBytes(long value)
to Bytes 
return new byte[] { (byte) (value >>> 56), (byte) (value >>> 48), (byte) (value >>> 40),
        (byte) (value >>> 32), (byte) (value >>> 24), (byte) (value >>> 16), (byte) (value >>> 8),
        (byte) value };
byte[]toBytes(long value)
Convert long to 4 bytes array. 
byte[] result = new byte[8];
result[0] = (byte) (value >> 56);
result[1] = (byte) (value >> 48);
result[2] = (byte) (value >> 40);
result[3] = (byte) (value >> 32);
result[4] = (byte) (value >> 24);
result[5] = (byte) (value >> 16);
result[6] = (byte) (value >> 8);
...
byte[]toBytes(long value, int numBytes)
to Bytes 
byte[] bytes = new byte[numBytes];
for (int i = numBytes - 1; i > 0; i--) {
    bytes[i] = (byte) value;
    value >>>= 8;
bytes[0] = (byte) value;
return bytes;
byte[]toBytes(long... values)
to Bytes 
byte[] array = new byte[8 * values.length];
for (int i = 0; i < values.length; i++) {
    toBytes(values[i], array, 8 * i);
return array;
byte[]toBytes(Object objValue)
to Bytes 
if (objValue != null) {
    if (objValue instanceof byte[]) {
        return (byte[]) objValue;
    } else {
        return objValue.toString().getBytes();
} else
    return null;
...