BitSet class Methods in Java Part -I

java.util.BitSet

This class implements a vector of bits that grows as needed. Each component of the bit set has a boolean value. The bits of a BitSet are indexed by nonnegative integers.

Some methods of ArrayDeque.

and(BitSet): This method performs a logical AND of this target bit set with the argument bit set.

andNot(BitSet): This method clears all of the bits in this BitSet whose corresponding bit is set in the specified BitSet.

cardinality(): This method returns the number of bits set to true in this BitSet.

clear(): This method sets all of the bits in this BitSet to false.

clear(int): This method sets the bit specified by the index to false.

clone(): This method of cloning this BitSet produces a new BitSet that is equal to it.

equals(Object): This method compares this object against the specified object.

flip(int): This method sets the bit at the specified index to the complement of its current value.

flip(int, int):  This method sets each bit from the specified fromIndex (inclusive) to the specified toIndex (exclusive) to the complement of its current value.

get(int): This method returns the value of the bit with the specified index.

get(int, int): This method returns a new BitSet composed of bits from this BitSetfrom fromIndex (inclusive) to toIndex (exclusive).

hashCode(): The hash code depends only on which bits are set within this BitSet.

intersects(BitSet): This method returns true if the specified BitSet has any bits set to true that are also set to true in this BitSet.

isEmpty(): This method returns true if this BitSet contains no bits that are set to true.

length(): This method returns the "logical size" of this BitSet: the index of the highest set bit in the BitSet plus one.

nextClearBit(int): This method returns the index of the first bit that is set to false that occurs on or after the specified starting index.

Some more Methods of Bitset class