Java Math negateExact() Method

Example

Change the sign of different numbers:

System.out.println(Math.negateExact(15));
System.out.println(Math.negateExact(-32));
System.out.println(Math.negateExact(7));
System.out.println(Math.negateExact(-25));

Definition and Usage

The negateExact() method returns an integer with equal value and opposite sign to another integer and throws an exception if an overflow occurs. This prevents incorrect results that can occur from the overflow.

An overflow occurs when the integer is equal to Integer.MIN_VALUE or Long.MIN_VALUE, the largest negative integer, because it does not have a positive equivalent.

Syntax

One of the following:

public static int negateExact(int x)

public static long negateExact(long x)

Parameter Values

Technical Details