以大整数值运作

import java.math.BigInteger;// 来自 n o w j a v a . c o m


public class Main {

  public static void main(String[] args) {

    // Create via a string

    BigInteger bi1 = new BigInteger("1234567890123456890");

    System.out.println(bi1);

    // Create via a long

    BigInteger bi2 = BigInteger.valueOf(123L);

    System.out.println(bi2);

    

    bi1 = bi1.add(bi2);

    System.out.println(bi1);

    bi1 = bi1.multiply(bi2);

    System.out.println(bi1);
    /**
     * 时   代    Java - nowjava.com 提 供 
    **/

    bi1 = bi1.subtract(bi2);

    System.out.println(bi1);

    bi1 = bi1.divide(bi2);

    System.out.println(bi1);

    b