What is Math addExact(int x, int y) in Java?
The addExact() method is used to add two numbers of primitive integer datatype. As a result, the sum is also an integer value.
This method also returns an exception when the addition of two numbers exceeds the range of int.
Syntax
static int addExact(int x, int y)
Parameters
x: A 32-bit integer value is the first argument value.y: A 32-bit integer value is the second argument value.
Return Value
sum: This method will return a 32-bit integer sum of two parameters x & y.
If the sum exceeds the maximum value of integer
-2147483648 to 2147483647, it will raise theArithmetic Exception, i.e., integer overflow.
Example
Case #1: In this example, x= 20 and y= 10, so the sum of these two numbers is 30. It works smoothly and prints the console Sum: 30. But what if the sum exceeds 32-bits?
Let’s consider Case #2.
Case #2: In this worst-case scenario, x= Integer.MAX_VALUE (x is assigned with a maximum possible value of integer) and y= 30. The sum will exceed 32-bit and it will throw ArithmeticException: integer overflow.
In
Integer.MAX_VALUE,Integeris a wrapper class that wraps a value of the primitive typeintin an object.
// main programclass EdPresso {// main methodpublic static void main( String args[] ) {// x contain 20 and y contain 10int x = 20;int y = 10;// Sum will be 30System.out.println("Sum: " + Math.addExact(x, y));}}