Java 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

bytesetBitAt(int offset, boolean bitValue, byte aByte)
Set a bit within a byte. 
return (byte) ((bitValue) ? (aByte | (1 << offset)) : (aByte & ~(1 << offset)));
bytesetBitAt(int offset, boolean bitValue, byte aByte)
set Bit At 
return (byte) ((bitValue) ? (aByte | (1 << offset)) : (aByte & ~(1 << offset)));
intsetBitBiInt(int b0, int b1, int value, int original)
Sets an int into another int. 
original = setBit(b0, getBit(0, value), original);
original = setBit(b1, getBit(1, value), original);
return original;
bytesetBitByPos(byte byt, boolean bool, int pos)
set Bit By Pos 
if (bool) {
    return (byte) ((int) byt | mask[pos]);
} else {
    return (byte) ((int) byt & invMask[pos]);
intsetBitInInt(int bits, int bitIndex, boolean flag)
Convenience method to set a boolean as a bit in the specified int, for memory utilisation purposes. 
if (bitIndex < 0 || bitIndex > 31) {
    throw new IllegalArgumentException();
int mask = 1 << bitIndex;
return (bits & ~mask) | (flag ? mask : 0);
longsetBitInLong(long l, long n, int v)
Set bit n of a 64-bit sequence i to v (0 or 1) 
if (v != 0) {
    return l | (1L << n); 
} else {
    return l & ~(1L << n);
voidsetBitLE(byte[] data, int index)
set Bit LE 
data[index >>> 3] |= bitMask[7 & index];
voidsetBitmapRange(long[] bitmap, int start, int end)
set bits at start, start+1,..., end-1 
if (start == end) {
    return;
int firstword = start / 64;
int endword = (end - 1) / 64;
if (firstword == endword) {
    bitmap[firstword] |= (~0L << start) & (~0L >>> -end);
    return;
...
intsetBitmapRangeAndCardinalityChange(long[] bitmap, int start, int end)
set bits at start, start+1,..., end-1 and report the cardinality change 
int cardbefore = cardinalityInBitmapWordRange(bitmap, start, end);
setBitmapRange(bitmap, start, end);
int cardafter = cardinalityInBitmapWordRange(bitmap, start, end);
return cardafter - cardbefore;
intsetBitRange(final int val, final int start, final int len, final int newVal)
Sets a set of bits in a int. 
int mask = ((1 << len) - 1) << start;
return (val & ~mask) | ((newVal << start) & mask);