这是关于Java中大数的运算

package BigNumber;

import java.math.BigInteger;


public class BigNumberDemo {
    public static void main(String[] args) {

        
        
        //创建两个大数（整型）
        BigInteger bn1 = new BigInteger("11111111111111111111");
        BigInteger bn2 = new BigInteger("2222222222222222222222");
        //加
        System.out.println(bn1.add(bn2));
        //减
        System.out.println(bn1.subtract(bn2));
        //乘
        System.out.println(bn1.multiply(bn2));
        //除
        System.out.println(bn2.divide(bn1));
        //求余
        System.out.println(bn2.mod(bn1));

        
    }

}