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Home » Java » Stream » BitSet in Java Example
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BitSet in Java Example

By Dinesh Thakur

The BitSet class is used to create objects that maintain a set of bits. The bits are maintained as a growable set. The capacity of the bit set is increased as needed. Bit sets are used to maintain a list of flags that indicate the state of each element of a set of conditions. Flags are boolean values that are used to represent the state of an object. It is used for representing a set of true and false values.

Two BitSetconstructors are provided.

BitSet()

BitSet(int size)

The first constructor initializes a BitSet to a default size and second constructor initialises the bitset to the given size.

   import java.util.BitSet;
   public class BitSetJavaExample
  {
             public static void main(String args[])
             {
                    int n=8;
                    BitSet p = new BitSet(n);
                    for(int i=0;i<n;i++)
                    p.set(i);
                    System.out.print("Bits of p are set as : ");
                    for(int i=0;i<n;i++)
                    System.out.print(p.get(i)+" ");
                    BitSet q = (BitSet) p.clone();
                    System.out.print("\nBits of q are set as : ");
                    for(int i=0;i<n;i++)
                    System.out.print(q.get(i)+" ");
                    for(int i=0;i<3;i++)
                    p.clear(i);
                    System.out.print("\nBits of p are now set as : ");
                    for(int i=0;i<n;i++)
                    System.out.print(p.get(i)+" ");
                    System.out.print("\nBits of p which are true : "+p);
                    System.out.print("The Bits of q which are true : "+q);
                    BitSet r= (BitSet) p.clone();
                    p.xor(q);
                    System.out.println("Output of p xor q= "+p);
                    p = (BitSet) r.clone();
                    p.and(q);
                    System.out.println("Output of p and q = "+p);
                    p = (BitSet) r.clone();
                    p.or(q);
                    System.out.println("Output of p or q = "+p);
             }
                                                                                   
   }

BitSet

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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