1. package Day14_BigInteger;
   
2. 
   
3. import java.math.BigInteger;
   
4. 
   
5. public class BigIntegerDemo {
   
6. public static void main(String[] args) {
   
7. System.out.println(Integer.MAX_VALUE);
   
8. Integer i = new Integer("2147483647");
   
9. // Integer i2 = new Integer("2147483648");
   
10. // 超出Integer的最大范围就不能赋值，更不能运算
    
11. // BigInteger:可以让超过Integer范围内的数据进行计算
    
12. BigInteger bi = new BigInteger("2147483648000");
    
13. BigInteger bi2 = new BigInteger("6464643131278");
    
14. 
    
15. //public BigInteger add(BigInteger val):加
    
16. System.out.println(bi.add(bi2));
    
17. 
    
18. //public BigInteger subtract(BigInteger val):减
    
19. System.out.println(bi2.subtract(bi));
    
20. 
    
21. //public BigInteger multiply(BigInteger val):乘
    
22. System.out.println(bi.multiply(bi2));
    
23. 
    
24. //public BigInteger divide(BigInteger val):除
    
25. System.out.println(bi2.divide(bi));
    
26. 
    
27. //public BigInteger[] divideAndRemainder(BigInteger val):商和余数
    
28. BigInteger [] arr = bi2.divideAndRemainder(bi);
    
29. System.out.println("商："+arr[0]);
    
30. System.out.println("余数："+arr[1]);
    
31. }
    
32. }

复制代码

1. package Day14_BigInteger;
   
2. 
   
3. import java.math.BigInteger;
   
4. 
   
5. public class BigIntegerDemo {
   
6. public static void main(String[] args) {
   
7. System.out.println(Integer.MAX_VALUE);
   
8. Integer i = new Integer("2147483647");
   
9. // Integer i2 = new Integer("2147483648");
   
10. // 超出Integer的最大范围就不能赋值，更不能运算
    
11. // BigInteger:可以让超过Integer范围内的数据进行计算
    
12. BigInteger bi = new BigInteger("2147483648000");
    
13. BigInteger bi2 = new BigInteger("6464643131278");
    
14. 
    
15. //public BigInteger add(BigInteger val):加
    
16. System.out.println(bi.add(bi2));
    
17. 
    
18. //public BigInteger subtract(BigInteger val):减
    
19. System.out.println(bi2.subtract(bi));
    
20. 
    
21. //public BigInteger multiply(BigInteger val):乘
    
22. System.out.println(bi.multiply(bi2));
    
23. 
    
24. //public BigInteger divide(BigInteger val):除
    
25. System.out.println(bi2.divide(bi));
    
26. 
    
27. //public BigInteger[] divideAndRemainder(BigInteger val):商和余数
    
28. BigInteger [] arr = bi2.divideAndRemainder(bi);
    
29. System.out.println("商："+arr[0]);
    
30. System.out.println("余数："+arr[1]);
    
31. }
    
32. }

复制代码