java.lang.Long.highestOneBit()

package com.codingdict;

import java.lang.*;

public class LongDemo {

   public static void main(String[] args) {

      long l = 220;
      System.out.println("Number = " + l);

      /* returns the string representation of the unsigned long value
         represented by the argument in binary (base 2) */
      System.out.println("Binary = " + Long.toBinaryString(l));

      // returns the number of one-bits
      System.out.println("Number of one bits = " + Long.bitCount(l));

      /* returns a long value with at most a single one-bit, in the position 
         of the highest-order ("leftmost") one-bit in the specified int value */
      System.out.println("Highest one bit = " + Long.highestOneBit(l));
   }
}