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：