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Java BitSet get(int bitIndex) Method

The Java BitSet get(int bitIndex) method returns the value of the bit with the specified index. The value is true if the bit with the index bitIndex is currently set in this BitSet; otherwise, the result is false.

Following is the declaration for java.util.BitSet.get() method

public boolean get(int bitIndex)

bitIndex − the bit index.

This method returns the value of the bit with the specified index.

IndexOutOfBoundsException − if the specified index is negative.

The java.util.BitSet.get(int fromIndex,int toIndex) method returns a new BitSet composed of bits from this BitSet from fromIndex (inclusive) to toIndex (exclusive).

Following is the declaration for java.util.BitSet.get() method

public BitSet get(int fromIndex,int toIndex)

• fromIndex − index of the first bit to include.

• toIndex − index after the last bit to include.

This method returns a new BitSet from a range of this BitSet.

IndexOutOfBoundsException − if fromIndex is negative, or toIndex is negative, or fromIndex is larger than toIndex.

The following example shows the usage of Java BitSet get(bitIndex) method. We're creating a BitSet. We're setting true values in the BitSet object using set() method call and using get(bitIndex) method we're printing value of one true bit and one false bit.

package com.tutorialspoint;

import java.util.BitSet;

public class BitSetDemo {
   public static void main(String[] args) {

      // create a bitset
      BitSet bitset = new BitSet();

      // assign values to bitset
      bitset.set(0, 6, true);

      // print the set
      System.out.println("Bitset:" + bitset);

      // print the value at index 2
      System.out.println(bitset.get(2));

      // print the value at index 7
      System.out.println(bitset.get(7));
   }
}

Let us compile and run the above program, this will produce the following result −

Bitset:{0, 1, 2, 3, 4, 5}
Bitset:{0, 1, 3, 4, 5}

The following example shows the usage of Java BitSet get(fromIndex, toIndex) method. We're creating a BitSet. We're setting true values in the BitSet object using set() method call and using get(fromIndex, toIndex) method we're getting a smaller bitset and printing the same.

package com.tutorialspoint;

import java.util.BitSet;

public class BitSetDemo {
   public static void main(String[] args) {

      // create a bitset
      BitSet bitset = new BitSet();

      // assign values to bitset
      bitset.set(0, 6, true);

      // print the set
      System.out.println("Bitset:" + bitset);     

      // print the bitset from 3 to 6
      System.out.println("Bitset:" + bitset.get(3,6));
   }
}

Let us compile and run the above program, this will produce the following result −

Bitset:{0, 1, 2, 3, 4, 5}
Bitset:{0, 1, 2}

The following example shows the usage of Java BitSet get(bitIndex) method. We're creating two BitSets using byte[] and using get(bitIndex) method we're printing value of one true bit and one false bit.

package com.tutorialspoint;

import java.util.BitSet;

public class BitSetDemo {
   public static void main(String[] args) {

      // create a bitset
      BitSet bitset = BitSet.valueOf(new byte[] { 0, 1, 2, 3, 4, 5 });

      // print the set
      System.out.println("Bitset:" + bitset);

      // print the value at index 17
      System.out.println(bitset.get(17));

      // print the value at index 18
      System.out.println(bitset.get(18));
   }
}

Let us compile and run the above program, this will produce the following result −

Bitset:{8, 17, 24, 25, 34, 40, 42}
true
false

java_util_bitset.htm

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