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[]byteArrayFromBytes(int... bytes)
Return an array of bytes containing as elements this method's parameters. 
int length = bytes.length;
byte[] byteArray = new byte[length];
for (int i = 0; i < length; i++)
    byteArray[i] = (byte) bytes[i];
return byteArray;
byte[]byteArrayFromChar(char i)
byte Array From Char 
byte[] out = new byte[2];
charIntoByteArray(i, 0, out);
return out;
byte[]byteArrayFromHexString(String in)
Convert an hex-string to byte array "0001a0" -> {0x00, 0x01, 0xa0} 
byte out[] = new byte[in.length() / 2];
for (int i = 0; i < in.length(); i += 2) {
    out[i / 2] = (byte) Integer.parseInt(in.substring(i, i + 2), 16);
return out;
byte[]byteArrayFromInt(final int number)
byte Array From Int 
final byte b0 = (byte) (0xff & number);
final byte b1 = (byte) (0xff & (number >> 8));
final byte b2 = (byte) (0xff & (number >> 16));
final byte b3 = (byte) (0xff & (number >> 24));
return new byte[] { b3, b2, b1, b0 };
byte[]byteArrayFromInteger(int integer)
Convert an integer value into the corresponding byte array 
return new byte[] { (byte) (integer >> 24), (byte) (integer >> 16), (byte) (integer >> 8), (byte) integer };
byte[]byteArrayFromInteger(int integer)
byte Array From Integer 
return new byte[] { (byte) (integer >> 24), (byte) (integer >> 16), (byte) (integer >> 8), (byte) integer };
byte[]bytes(final byte... elements)
bytes 
return elements;
byte[]bytes(final int... ints)
bytes 
byte[] b = new byte[ints.length * 4];
for (int i = 0; i < ints.length; i++) {
    int offset = i * 4;
    b[offset] = (byte) (ints[i] >> 24);
    b[offset + 1] = (byte) (ints[i] >> 16);
    b[offset + 2] = (byte) (ints[i] >> 8);
    b[offset + 3] = (byte) (ints[i]);
return b;
byte[]bytes(int... bytes)
bytes 
byte[] result = new byte[bytes.length];
for (int i = 0; i < bytes.length; i++) {
    result[i] = (byte) bytes[i];
return result;
byte[]bytes(int... ints)
bytes 
byte[] b = new byte[ints.length];
for (int i = 0; i < ints.length; i++) {
    b[i] = (byte) (checkBounds(ints[i], 0, 256) & 0xFF);
return b;