BigInteger类negate()方法 (BigInteger Class negate() method)

• negate() method is available in java.math package.

  negate()方法在java.math包中可用。

• negate() method is used to negate the value of this BigInteger.

  negate()方法用于对这个BigInteger的值求反。

• negate() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  negate()方法是一种非静态方法，只能由类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。

• negate() method does not throw an exception at the time of negating the value of this object.

  取反此对象的值时， negate()方法不会引发异常。

Syntax:

句法：

public BigInteger negate();

Parameter(s):

参数：

• None

  没有

Return value:

返回值：

The return type of this method is BigInteger, it returns BigInteger that holds the value negation of this object by using [ - (this BigInteger) ].

此方法的返回类型为BigInteger ，它通过使用[-(this BigInteger)]返回保存该对象的取反值的BigInteger。

Example:

例：

// Java program to demonstrate the example // of BigInteger negate() method of BigIntegerimport java.math.*;public class NegateOfBI {
       public static void main(String args[]) {
           // Initialize two variables str1 and str2        String str1 = "-1030";        String str2 = "1030";        // Initialize two BigInteger objects        BigInteger b_int1 = new BigInteger(str1);        BigInteger b_int2 = new BigInteger(str2);        // Display b_int1 and b_int2        System.out.println("b_int1: " + b_int1);        System.out.println("b_int2: " + b_int2);        System.out.println();        System.out.println("negate(): ");        // returns the negate value of this BigInteger        // like (-b_int1)        BigInteger negate = b_int1.negate();        System.out.println("b_int1.negate(): " + negate);        // returns the negate value of this BigInteger        // like (-b_int2)        negate = b_int2.negate();        System.out.println("b_int2.negate(): " + negate);    }}

Output

输出量

b_int1: -1030b_int2: 1030negate(): b_int1.negate(): 1030b_int2.negate(): -1030

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