public void testBitCountPos(){
  BigInteger aNumber=new BigInteger("12378634756343564757582937873487638746283767238657872368748726875");
  assertEquals(107,aNumber.bitCount());
}

public void testBitCountPos ( ) { BigInteger aNumber = new BigInteger ( "12378634756343564757582937873487638746283767238657872368748726875" ) ; assertEquals ( 107 , aNumber . bitCount ( ) ) ; }
bitcount ( ) of a negative number .
