BigDecimal becomes negative

Call directly when it becomes negative negate() Method

If it is an integer

BigDecimal bd = new BigDecimal("12.1");
long l  = bd.setScale( 0, BigDecimal.ROUND_UP ).longValue(); // Rounding up
long l  = bd.setScale( 0, BigDecimal.ROUND_DOWN ).longValue(); // Rounding down
 
* For positive numbers ,ROUND_UP  = ROUND_CEILING,ROUND_DOWN = ROUND_FLOOR