The incrementExact() is a built-in function in java which returns the argument incremented by one, throwing an exception if the result overflows the specified datatype either long or int depending on which data type has been used on the method argument.
Syntax:
int incrementExact(int num) long incrementExact(long num)
Parameter: The function accepts one mandatory parameter as shown above and described below:
Return Value: The function returns the argument incremented by one, throwing an exception if the result overflows the specified datatype either long or int depending on which data type has been used on the method argument.
Examples:
Input : 12 Output : 13 Input : -3 Output : -2
Program 1: Program to demonstrate the working of function
// Java program to demonstrate working// of java.lang.Math.incrementExact() methodimport java.lang.Math;  class Gfg1 {      // driver code    public static void main(String args[])    {          int y = 12;        System.out.println(Math.incrementExact(y));          int x = -3;        System.out.println(Math.incrementExact(x));    }} |
Output:
13 -2
Program 2: Program to demonstrate the overflow in function
// Java program to demonstrate overflow// of java.lang.Math.incrementExact() methodimport java.lang.Math;  class Gfg1 {      // driver code    public static void main(String args[])    {          int y = Integer.MAX_VALUE;        System.out.println(Math.incrementExact(y));    }} |
Output:
Exception in thread "main" java.lang.ArithmeticException: integer overflow
at java.lang.Math.incrementExact(Math.java:909)
at Gfg1.main(File.java:12)
