Java Math BigInteger.add() 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;  



      // assign values to bi1, bi2

      bi1 = new BigInteger("123");

      bi2 = new BigInteger("50");



      // perform add operation on bi1 using bi2

      bi3 = bi1.add(bi2);



      String str = "Result of addition is " +bi3;;



      // print bi3 value

      System.out.println( str );

   }

}