存储 20 位数字的数据类型

Datatype to store 20 digit number(存储 20 位数字的数据类型)

问题描述

我有一个 20 位的数字，哪种数据类型支持存储这个数字?我已经尝试了很长时间，但我已经超出了范围.

I have a number of 20 digit, which datatype will support to store this number? I have tried long, double but I 'm getting out of range.

号码 = 48565664968483514466

Number = 48565664968483514466

然后我必须将此数字转换为 Base36 以生成条形码.

Then I have to convert this number to Base36 to generate the barcode.

推荐答案

BigInteger:

BigInteger 类分配尽可能多的内存来保存它被要求保存的所有数据位，并且还提供与 Java 的所有原始整数运算符和所有相关方法类似的操作java.lang.Math.

The BigInteger class allocates as much memory as it needs to hold all the bits of data it is asked to hold and also provides operations analogues to all of Java's primitive integer operators and for all relevant methods from java.lang.Math.

声明为

BigInteger bi1 =  new BigInteger("12345678900123");

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