BitSet : Java Glossary

java.util.BitSet simulates bit strings longer than 64 bits using an internal array of longs.

BitSet supports and, or, xor, andNot and clear. It does not have a shift, but you can copy bits, one at a time with get/set.

Other techniques for dealing with sets include:

• HashSet
• EnumSet.
• boolean[]
• Roll your own mini-BitSet with a single byte, char, int or long.

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