如何在 Java 中进行非常大的数字计算?
How would I go about doing calculations with extremely large numbers in Java?
我已经尝试过 long
,但它的最大值为 9223372036854775807,当使用整数时,它不能保存足够的数字,因此对于我的需要来说不够准确.
I have tried long
but that maxes out at 9223372036854775807, and when using an integer it does not save enough digits and therefore is not accurate enough for what I need.
这里面还有吗?
您可以将 BigInteger
类用于整数,BigDecimal
用于带有小数位的数字.这两个类都定义在 java.math
包中.
You can use the BigInteger
class for integers and BigDecimal
for numbers with decimal digits. Both classes are defined in java.math
package.
例子:
BigInteger reallyBig = new BigInteger("1234567890123456890");
BigInteger notSoBig = new BigInteger("2743561234");
reallyBig = reallyBig.add(notSoBig);
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