Check if BigInteger is not a perfect square

Question

I have a BigInteger value, let\'s say it is 282 and is inside the variable x. I now want to write a while loop that states:

while b2 isn\'t a perfect square:         


        

Answer 1

DON'T use this...

 BigInteger n = ...;
 double n_as_double = n.doubleValue();
 double n_sqrt = Math.sqrt(n_as_double);
 BigInteger n_sqrt_as_int = new BigDecimal(n_sqrt).toBigInteger();
 if (n_sqrt_as_int.pow(2).equals(n)) {
  // number is perfect square
 }

As Christian Semrau commented below - this doesn't work. I am sorry for posting incorrect answer.