How to create array of bitset class objects in java?

You should use byte array instead.

There is a BitSet implementation in the standard Java SE API, you should try using that one.

If you want to use a binary number representation to create a BitSet, this can be done in two steps:

• Use the BigInteger constructor that takes a string and a base as arguments. For binary the base is 2.

• Initialize a BitSet from the byte array representation of the BigInteger by calling BigInteger.toByteArray() with BitSet.valueOf().

e.g.

BigInteger a = new BigInteger("10101", 2); //base 2 for binary
BitSet aBits = BitSet.valueOf(a.toByteArray());

BitSet.valueOf() is new in Java 7 so won't work in earlier Java versions.

Edit:

If you don't like initializing BigInteger with strings and your binary numbers fit into 64-bits, you could also use Java 7's binary literals and initialize the BigInteger using BigInteger.valueOf(long) method instead.