import java.math.BigInteger;

public class BigIntegers
{
    public static void main(String[] args)
    {
        BigInteger a = new BigInteger("12345678901234567890");
        BigInteger b = new BigInteger("99999999999999999999");
        
        System.out.println(a); // BigInteger has a toString()
        System.out.println(b); // that prints it out nicely
    }
}