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What is BitSet.isEmpty() in java?
Salman YousafThe BitSet class has a built-in isEmpty() method, which checks whether an instance of the BitSet type contains no bits that are going to be set true.
This built-in
BitSetclass implements a vector of bits, available atjava.util.*.
Syntax
public boolean isEmpty()
Parameters
It does not take any argument value.
Return value
It returns a primitive type boolean value.
true: It returnstrueif the invoking object is empty.false: It returnsfalseif the invoking object is not empty.
Code
As highlighted, we have three BitSet objects i.e., bitset1, bitset2, and bitset3. bitset1 and bitset2 are non-empty. So isEmpty() will return false while bitset3 will return true.
import java.util.BitSet;
import java.util.Random;
class EdPresso {
public static void main( String args[] ) {
// object for Random Class
Random rand = new Random();
// objects of BitSet Class
BitSet bitset1 = new BitSet(10);
BitSet bitset2 = new BitSet(10);
BitSet bitset3 = new BitSet(10);
// set some bits
for(int i = 0; i < 8; i++) {
bitset1.set(rand.nextInt(30));
bitset2.set(rand.nextInt(30));
}
System.out.println("bitset1: ");
System.out.println(bitset1);
System.out.println("\nbitset2: ");
System.out.println(bitset2);
System.out.println("\nbitset3: ");
System.out.println(bitset3);
// isEmpty()
System.out.println("\n isEmpty() is calleed");
System.out.println("\nbitset1: "+ bitset1.isEmpty());
System.out.println("bitset2: "+ bitset2.isEmpty());
System.out.println("bitset3: "+ bitset3.isEmpty());
}
}RELATED TAGS
bitset
isempty
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