Java Math BigInteger.multiply() 方法

package com.codingdict;



import java.math.*;



public class BigIntegerDemo {



   public static void main(String[] args) {



      // create 3 BigInteger objects

      BigInteger bi1, bi2, bi3;



      bi1 = new BigInteger("7");

      bi2 = new BigInteger("20");



      // multiply bi1 with bi2 and assign result to bi3

      bi3 = bi1.multiply(bi2);



      String str = bi1 + " * " + bi2 + " = " +bi3;



      // print bi3 value

      System.out.println("Multiplication result is " +str);

   }

}