Java基础知识强化87：BigInteger类之BigInteger加减乘除法的使用

1. BigInteger加减乘除法的使用

 public BigInteger add(BigInteger val)：加
 public BigInteger subtract(BigInteger val)：减
 public BigInteger multiply(BigInteger val)：乘
 public BigInteger divide(BigInteger val)：除
 public BigInteger divideAndRemainder(BigInteger val)：返回 商 和 余数的数组

2. 代码示例：

 package cn.itcast_02;

 import java.math.BigInteger;

 /*
  * public BigInteger add(BigInteger val):加
  * public BigInteger subtract(BigInteger val):减
  * public BigInteger multiply(BigInteger val):乘
  * public BigInteger divide(BigInteger val):除
  * public BigInteger[] divideAndRemainder(BigInteger val):返回商和余数的数组
  */
 public class BigIntegerDemo {
     public static void main(String[] args) {
         BigInteger bi1 = new BigInteger("100");
         BigInteger bi2 = new BigInteger("50");

         // public BigInteger add(BigInteger val):加
         System.out.println("add:" + bi1.add(bi2));
         // public BigInteger subtract(BigInteger val):加
         System.out.println("subtract:" + bi1.subtract(bi2));
         // public BigInteger multiply(BigInteger val):加
         System.out.println("multiply:" + bi1.multiply(bi2));
         // public BigInteger divide(BigInteger val):加
         System.out.println("divide:" + bi1.divide(bi2));

         // public BigInteger[] divideAndRemainder(BigInteger val):返回商和余数的数组
         BigInteger[] bis = bi1.divideAndRemainder(bi2);
         System.out.println("商：" + bis[0]);
         System.out.println("余数：" + bis[1]);
     }
 }

运行效果如下：