import java.util.BitSet;

public class BitSetDemo{

public static void main(String[] args){

BitSet bs1 = new BitSet();

bs1.set(4, true);

bs1.set(5, true);

bs1.set(9, true);

bs1.set(10, true);

BitSet bsTemp = (BitSet)bs1.clone();

dumpBitSet(" ", bs1);

BitSet bs2 = new BitSet();

bs2.set(4, true);

bs2.set(6, true);

bs2.set(7, true);

bs2.set(9, true);

dumpBitSet(" ", bs2);

bs1.and(bs2);

dumpSeparator(Math.min(bs1.size(), 16));

dumpBitSet("AND (&) ", bs1);

System.out.println();

bs1 = bsTemp; // From this beginning, bs1 and bsTemp reference the identical object.

dumpBitSet(" ", bs1);

dumpBitSet(" ", bs2);

bsTemp = (BitSet)bsTemp.clone(); // Assign a new reference object to bsTemp before the or() method on bs1 to record the original value.

bs1.or(bs2);

dumpSeparator(Math.min(bs1.size(), 16));

dumpBitSet("OR (|) ", bs1);

System.out.println();

bs1 = bsTemp;

dumpBitSet(" ", bs1);

dumpBitSet(" ", bs2);

//bsTemp = (BitSet)bs1.clone(); No more use for bsTemp, otherwise you need to uncomment this line.

bs1.xor(bs2);

dumpSeparator(Math.min(bs1.size(), 16));

dumpBitSet("XOR (^) ", bs1);

}

static void dumpBitSet(String preamble, BitSet bs){

System.out.print(preamble);

int size = Math.min(bs.size(), 16);

for(int i=0;i<size;i++){

System.out.print(bs.get(i)?"1":"0");

}

System.out.print(" size(" + bs.size() + "), length(" + bs.length() + ")");

System.out.println();

}

static void dumpSeparator(int length){

System.out.print(" ");

for(int i =0 ; i<length;i++){

System.out.print("-");

}

System.out.println();

}

}