Get the number of zero bits preceding and following

static int numberOfLeadingZeros(long i)

Returns the number of zero bits preceding the highest-order one-bit in binary.

static int numberOfTrailingZeros(long i)

Returns the number of zero bits following the lowest-order one-bit in binary.

public class Main {
  public static void main(String[] args) {
    System.out.println(Long.numberOfLeadingZeros(123123));
  }
}

The output:

47

1. Long class
2. Constants value from Long class
3. Constructors from Long
4. Convert long value to byte, double, float, int, long, short
5. Decode a string to create long value
6. Get the long value from a system property
7. Compare two long values
8. Parse long value from string
9. Convert long value to binary, hex and octal format strings
10. Convert long value to string
11. Get the sign of the long value
12. Get the number of zero bits preceding and following
13. Reverse and rotate a long value