1 package ex6_2;
2 import java.math.BigInteger;
3
4 public class BigintegerExample {
5 public static void main(String[] args) {
6 BigInteger n1=new BigInteger("987654321987654321");
7 BigInteger n2=new BigInteger("123456789123456789");
8 BigInteger result=null;
9 result=n1.add(n2);
10 System.out.println("和："+result.toString());
11 result=n1.subtract(n2);
12 System.out.println("差："+result.toString());
13 result=n1.multiply(n2);
14 System.out.println("积："+result.toString());
15 result=n1.divide(n2);
16 System.out.println("商："+result.toString());
17 BigInteger m=new BigInteger("123"),
18 COUNT=new BigInteger("0"),
19 ONE=new BigInteger("1"),
20 TWO=new BigInteger("2");
21 System.out.print(m.toString()+"的因子有：");
22 for(BigInteger i=TWO; i.compareTo(m)<0;i=i.add(ONE)){
23 if((m.remainder(i).compareTo(BigInteger.ZERO))==0){
24 COUNT=COUNT.add(ONE);
25 System.out.print(" "+i.toString());
26 }
27 }
28 System.out.println(" ");
29 System.out.println(m.toString()+"一共有"+COUNT.toString()+"个因子");
30 }
31 }
