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[]toByteArray(final String hexString)
Converts the given hex string to byte array 
final int length = hexString.length();
final byte[] bytes = new byte[length / 2];
for (int i = 0; i < length; i += 2) {
    bytes[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
            + Character.digit(hexString.charAt(i + 1), 16));
return bytes;
byte[]toByteArray(int data)
Convert int to byte array 
return new byte[] { (byte) ((data >> 24) & 0xff), (byte) ((data >> 16) & 0xff), (byte) ((data >> 8) & 0xff),
        (byte) ((data >> 0) & 0xff) };
byte[]toByteArray(int i)
to Byte Array 
byte[] bytes = new byte[4];
bytes[0] = (byte) ((i >>> 24) & 0xFF);
bytes[1] = (byte) ((i >>> 16) & 0xFF);
bytes[2] = (byte) ((i >>> 8) & 0xFF);
bytes[3] = (byte) (i & 0xFF);
return bytes;
byte[]toByteArray(int in)
to Byte Array 
byte[] out = new byte[4];
out[0] = (byte) in;
out[1] = (byte) (in >> 8);
out[2] = (byte) (in >> 16);
out[3] = (byte) (in >> 24);
return out;
byte[]toByteArray(int in, int size)
to Byte Array 
byte[] bytes = new byte[size];
for (int i = size - 1; i >= 0; i--) {
    bytes[(size - 1) - i] = (byte) (in >>> 8 * i);
return bytes;
byte[]toByteArray(int intr)
This method converts one integer number to little-endian byte array. 
byte[] result = new byte[4];
for (int i = 0; i < 4; ++i) {
    result[i] = (byte) (intr & OP_PATTERN);
    intr = (intr >>> 8);
return result;
byte[]toByteArray(int num)
to Byte Array 
final int INT_BYTES = Integer.SIZE / 8;
byte[] bytes = new byte[INT_BYTES];
for (int i = 0; i < INT_BYTES; i++) {
    bytes[(INT_BYTES - 1) - i] = (byte) (num >>> 8 * i);
return bytes;
byte[]toByteArray(int value)
Convert an integer to a byte[] array. 
int intByteSize = 4;
byte[] byteArray = new byte[intByteSize];
for (int i = 0; i < intByteSize; i++) {
    byteArray[i] = (byte) ((value) >>> ((intByteSize - 1 - i) * 8));
return byteArray;
byte[]toByteArray(int value)
to Byte Array 
byte[] array = new byte[4];
putIntInByteArray(value, array, 0);
return array;
byte[]toByteArray(int value)
Gets int value as byte array. 
return new byte[] { (byte) (value >>> 24), (byte) (value >>> 16), (byte) (value >>> 8), (byte) value };