Android Utililty Methods Bit Set

List of utility methods to do Bit Set

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Description

The list of methods to do Bit Set are organized into topic(s).

Method

bytesetBit(byte bite, int offset, boolean set)
Modifies the specified bit within the passed byte to 1 or 0 depending on the boolean passed. 
if (offset > 7 || offset < 0) {
    throw new IllegalArgumentException(
            "Offset must be between 0 and 7!");
if (set) {
    bite = (byte) (bite | (1 << offset));
} else {
    bite = (byte) (bite & ~(1 << offset));
...
bytesetBit(byte bits, int offset, boolean status)
set Bit 
if (status) {
    return setBit(bits, offset);
} else {
    return clearBit(bits, offset);
byteresetBit(byte b, int bit)
reset Bit 
if (bit < 0 || bit >= 8)
    return b;
return (byte) (b & (~(1 << bit)));
voidsetBit(byte[] arr, int bit)
set Bit 
int index = bit / 8; 
int bitPosition = bit % 8; 
arr[index] = (byte) (arr[index] | (1 << bitPosition));
voidsetBit(byte[] bytes, int bitNr, int bit)
set Bit 
int byteNr = bytes.length - (bitNr / 8) - 1;
int bitNrInByte = bitNr % 8;
if (bit != 0) {
    bytes[byteNr] |= 1 << bitNrInByte;
} else {
    bytes[byteNr] &= ~(1 << bitNrInByte);
voidreverseBits(byte[] bits)
reverse Bits 
for (int i = 0; i < 4; i++) {
    byte temp = bits[i];
    bits[i] = bits[bits.length - i - 1];
    bits[bits.length - i - 1] = temp;
intbitwiseNot(int number)
bitwiseNot 
int ret = ~number;
return ret & 0x0000FFFF;
byte[]xor(byte[]... arrays)
XORs the bits in an arbitary number of byte arrays. 
if (arrays.length == 0)
    return null;
sortDecendingSize(arrays);
byte[] result = new byte[arrays[0].length];
for (byte[] array : arrays) {
    for (int i = 0; i < array.length; i++) {
        result[i] ^= array[i];
return result;
voidxorArray(byte[] array, byte[] mask)
xor Array 
final int len = Math.min(array.length, mask.length);
for (int i = 0; i < len; ++i) {
    array[i] ^= mask[i];