BitSet toLongArray() Method in Java with Examples

Last Updated : 27 Dec, 2018

The java.util.BitSet.toLongArray() is an inbuilt method of BitSet class that is used to produce a new long array containing all of the bits of the existing BitSet. As per the official documentation, this process works in the following way:

if, long[] longs = bit_set.toLongArray();
then, longs.length == (bit_set.length()+63)/64 and,
bit_set.get(n) == ((longs[n/64] & (1L<<(n%64))) != 0) for all n < 64 * longs.length

Syntax:

Bit_Set.toLongArray()

Parameter: The method does not take any parameters.

Return value: The method returns the set consisting of LongArray representation of the elements of the given BitSet.

Below programs illustrate the working of java.util.BitSet.toLongArray() method:
Program 1:

   // Java code to illustrate toLongArray() 
import java.util.*; 
  
public class BitSet_Demo { 
    public static void main(String args[]) 
    { 
        // Creating an empty BitSet 
        BitSet init_bitset = new BitSet(); 
  
        // Use set() method to add elements into the Set 
        init_bitset.set(10); 
        init_bitset.set(20); 
        init_bitset.set(30); 
        init_bitset.set(40); 
        init_bitset.set(50); 
  
        // Displaying the BitSet 
        System.out.println("BitSet: " + init_bitset); 
  
        long[] arr = init_bitset.toLongArray(); 
        System.out.println("The LongArray is: " + arr); 
  
        // Displaying the byteArray 
        System.out.println("The elements in the LongArray:"); 
        for (int i = 0; i < arr.length; i++) 
            System.out.print(arr[i] + ", "); 
    } 
} 
 
  

Output:

  BitSet: {10, 20, 30, 40, 50}  The LongArray is: [J@232204a1  The elements in the LongArray:  1127000493261824,

Program 2:

   // Java code to illustrate toLongArray() 
import java.util.*; 
  
public class BitSet_Demo { 
    public static void main(String args[]) 
    { 
        // Creating an empty BitSet 
        BitSet init_bitset = new BitSet(); 
  
        // Use set() method to add elements into the Set 
        init_bitset.set(48); 
        init_bitset.set(64); 
        init_bitset.set(15); 
        init_bitset.set(95); 
        init_bitset.set(105); 
        init_bitset.set(21); 
  
        // Displaying the BitSet 
        System.out.println("BitSet: " + init_bitset); 
  
        long[] arr = init_bitset.toLongArray(); 
        System.out.println("The LongArray is: " + arr); 
  
        // Displaying the byteArray 
        System.out.println("The elements in the LongArray:"); 
        for (int i = 0; i < arr.length; i++) 
            System.out.print(arr[i] + ", "); 
    } 
} 
 
  

Output:

  BitSet: {15, 21, 48, 64, 95, 105}  The LongArray is: [J@232204a1  The elements in the LongArray:  281474978840576, 2201170739201,

BitSet toString() Method in Java with Examples

chinmoy lenka

Improve

Article Tags :

Practice Tags :

Java

The java.util.BitSet.toByteArray() is an inbuilt method of BitSet class that is used to produce a new byte array containing all of the bits of the existing BitSet. As per the official documentation, this process works in the following way: if, byte[] bytes = bit_set.toByteArray(); then, bytes.length

2 min read

BitSet toString() Method in Java with Examples

The java.util.BitSet.toString() is an inbuilt method of BitSet class that is used to get a string representation of the bits of the sets in the form of a set of entries separated by â€œ, â€œ. So basically the toString() method is used to convert all the elements of BitSet into String. In addition to thi

2 min read

BitSet stream() Method in Java with Examples

The stream() method of Java BitSet class is used to return a stream of indices for every bit contained in the BitSet. The indices are returned in increasing order. The size of the stream is the number of bits in the set state of the BitSet, which is equal to the value returned by the cardinality() m

2 min read

AbstractSet toArray() method in Java with Example

The toArray() method of Java AbstractSet is used to form an array of the same elements as that of the AbstractSet. Basically, it copies all the element from a AbstractSet to a new array. Syntax: Object[] arr = AbstractSet.toArray() Parameters: The method does not take any parameters. Return Value: T

2 min read

ArrayList toArray() method in Java with Examples

The toArray() method of ArrayList is used to return an array containing all the elements in ArrayList in the correct order. Declaring toArray() methodpublic Object[] toArray() or public <T> T[] toArray(T[] a)Parameters: This method either accepts no parameters or it takes an array T[] as a par

3 min read

AbstractSet toArray(T[]) method in Java with Example

The toArray(T[]) method method of AbstractSet class in Java is used to form an array of the same elements as that of the AbstractSet. It returns an array containing all of the elements in this AbstractSet in the correct order; the run-time type of the returned array is that of the specified array. I

4 min read

BitSet size() Method in Java with Examples

The size() Method of BitSet class in Java is used to know the size of this BitSet. This size is equal to the number of bits, each element has occupied in the BitSet. The maximum element in the set is the size - the first element Syntax: BitSet.hashCode() Parameters: The method does not accept any pa

2 min read

Byte toString() method in Java with examples

The toString() method of Byte class is a built in method in Java which is used to return a String value. public String toString() Syntax: ByteObject.toString() Return Value: It returns a String object, the value of which is equal to the value of the ByteObject. Below is the implementation of toStrin

2 min read

DelayQueue toArray() method in Java with Examples

The toArray() method of DelayQueue is used to return an array containing all the elements in DelayQueue. There elements are not in any specific order in the array.Syntax: public Object[] toArray () or public T[] toArray (T[] a) Parameters: This method either accepts no parameters or it takes an arra

4 min read

ByteBuffer putLong() methods in Java with Examples

putLong(int value) The putLong(int value) method of java.nio.ByteBuffer Class is used to write eight bytes containing the given long value, in the current byte order, into this buffer at the current position, and then increments the position by eight. Syntax: public abstract ByteBuffer putLong(long

6 min read

BitSet toLongArray() Method in Java with Examples

Similar Reads