BigInteger bgInt = new BigInteger("1");
时间: 2024-04-29 20:23:33 浏览: 16
This line of code creates a new BigInteger object and initializes it to the value of 1. BigInteger is a class in Java that provides support for arbitrary-precision integers. This means that it can handle integers of any size, limited only by the amount of memory available.
In this case, the BigInteger object is being initialized with a string literal "1" which represents the value of one. This can be used to perform mathematical operations on very large integers that would otherwise overflow the maximum value of a primitive data type like int or long.
For example, the following code creates two BigInteger objects and adds them together:
```
BigInteger bgInt1 = new BigInteger("12345678901234567890");
BigInteger bgInt2 = new BigInteger("98765432109876543210");
BigInteger sum = bgInt1.add(bgInt2);
System.out.println(sum.toString()); // prints 111111111111111111100
```
Here, the add() method is used to add the two BigInteger objects together, and the result is stored in a third BigInteger object. The toString() method is then used to convert the result to a string so it can be printed to the console.
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