import java.math.BigDecimal;

public class BigDecimals
{
    public static void main(String[] args)
    {
        BigDecimal a = new BigDecimal("1.234567890123456789e10");
        BigDecimal b = new BigDecimal("9.9999999999999999999e100");
        
        System.out.println(a); // BigInteger has a toString()
        System.out.println(b); // that prints it out nicely
    }
}