- Java.util Package Classes
- Java.util - Home
- Java.util - ArrayDeque
- Java.util - ArrayList
- Java.util - Arrays
- Java.util - BitSet
- Java.util - Calendar
- Java.util - Collections
- Java.util - Currency
- Java.util - Date
- Java.util - Dictionary
- Java.util - EnumMap
- Java.util - EnumSet
- Java.util - Formatter
- Java.util - GregorianCalendar
- Java.util - HashMap
- Java.util - HashSet
- Java.util - Hashtable
- Java.util - IdentityHashMap
- Java.util - LinkedHashMap
- Java.util - LinkedHashSet
- Java.util - LinkedList
- Java.util - ListResourceBundle
- Java.util - Locale
- Java.util - Observable
- Java.util - PriorityQueue
- Java.util - Properties
- Java.util - PropertyPermission
- Java.util - PropertyResourceBundle
- Java.util - Random
- Java.util - ResourceBundle
- Java.util - ResourceBundle.Control
- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
- Java.util - StringTokenizer
- Java.util - Timer
- Java.util - TimerTask
- Java.util - TimeZone
- Java.util - TreeMap
- Java.util - TreeSet
- Java.util - UUID
- Java.util - Vector
- Java.util - WeakHashMap
- Java.util Package Extras
- Java.util - Interfaces
- Java.util - Exceptions
- Java.util - Enumerations
- Java.util Useful Resources
- Java.util - Useful Resources
- Java.util - Discussion
Java BitSet toByteArray() Method
Description
The Java BitSet toByteArray() method returns a new byte array containing all the bits in this bit set.
Declaration
Following is the declaration for java.util.BitSet.toByteArray () method
public byte[] toByteArray()
Parameters
NA
Return Value
This method Returns a new byte array containing all the bits in this bit set.
Exception
NA
Getting Arrays of bytes from a BitSet Example
The following example shows the usage of Java BitSet toByteArray() method. We're creating two BitSets. We're setting true values at given indexes to the BitSet objects using set() method calls per index and using toByteArray() method we're getting and printing the length of the byte arrays.
package com.tutorialspoint; import java.util.BitSet; public class BitSetDemo { public static void main(String[] args) { // create 2 bitsets BitSet bitset1 = new BitSet(); BitSet bitset2 = new BitSet(); // assign values to bitset1 bitset1.set(0, 6, true); // assign values to bitset2 bitset2.set(2); bitset2.set(4); bitset2.set(6); bitset2.set(8); bitset2.set(10); System.out.println(bitset1.toByteArray().length); System.out.println(bitset2.toByteArray().length); } }
Output
Let us compile and run the above program, this will produce the following result −
1 2
Getting Arrays of bytes from a BitSet of Bytes Example
The following example shows the usage of Java BitSet toByteArray() method. We're creating two BitSets using byte[] and using toByteArray() method we're printing the length of the byte arrays of the bitsets.
package com.tutorialspoint; import java.util.BitSet; public class BitSetDemo { public static void main(String[] args) { // create 2 bitsets BitSet bitset1 = BitSet.valueOf(new byte[] { 0, 1, 2, 3, 4, 5 }); BitSet bitset2 = BitSet.valueOf(new byte[] { 2, 4, 6, 8, 10 }); System.out.println(bitset1.toByteArray().length); System.out.println(bitset2.toByteArray().length); } }
Output
Let us compile and run the above program, this will produce the following result −
6 5
Getting Arrays of bytes from a BitSet of Longs Example
The following example shows the usage of Java BitSet toByteArray() method. We're creating two BitSets using long[] and using toByteArray() method we're printing the length of the byte arrays of the bitsets.
package com.tutorialspoint; import java.util.BitSet; public class BitSetDemo { public static void main(String[] args) { // create 2 bitsets BitSet bitset1 = BitSet.valueOf(new long[] { 0, 1, 2, 3, 4, 5 }); BitSet bitset2 = BitSet.valueOf(new long[] { 2, 4, 6, 8, 10 }); System.out.println(bitset1.toByteArray().length); System.out.println(bitset2.toByteArray().length); } }
Output
Let us compile and run the above program, this will produce the following result −
41 33
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