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Java Integer bitCount() method
The java.lang.Integer.bitCount() method returns the number of one-bits in the two's complement binary representation of the specified int value.
At first, set an int value −
int val = 210;
Now, find the number of one-bits −
Integer.bitCount(val)
Following is an example to implement the bitCount() method in Java −
Example
public class Main {
public static void main(String[] args) {
int val = 210;
System.out.println("Number = " + val);
System.out.println("Binary = " + Integer.toBinaryString(val));
// returns the number of one-bits
System.out.println("Number of one bits = " + Integer.bitCount(val));
}
}Output
Number = 210 Binary = 11010010 Number of one bits = 4
Updated on: 20-Sep-2019
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