Java, comparing BigInteger values

Question

BigInteger bigInteger = ...;


if(bigInteger.longValue() > 0) {  //original code
    //bigger than 0
}

//should I change to this?
if(bigInteger.compareTo(BigInteger.         


        

Answer 1

If you are using BigInteger, this assumes you need bigger numbers than long can handle. So don't use longValue(). Use compareTo. With your example it better be:

if (bigInteger.compareTo(BigInteger.ZERO) > 0) {

}