java.util.BitSet simulates bit strings longer than 64 bits using an internal array of longs. Normally you would use a primitive long for a BitSet <= 64 bits long or an int for a BitSet <= 32 bits long.
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.
Two other techniques for dealing with sets include HashSet and EnumSet.
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