Fibonacci Number Using BigInteger

import java.math.BigInteger;
public class Fnumber{
public static void main (String []args){
BigInteger first=BigInteger.valueOf(0),second=BigInteger.valueOf(1),sum=BigInteger.valueOf(0);
int c=0;
System.out.println("Fibonacci Number is=" + first);
while(c<1600){
sum=first.add(second);
System.out.println(sum);
first=second;
second=sum;
c++;
}
}
}