The java.lang.Math.addExact() is a built-in math function in java which returns the sum of its arguments. It throws an exception if the result overflows a long.As addExact(long x, long y) is static, so object creation is not required.
Syntax :
public static long addExact(long x, long y) Parameter : a : the first value b : the second value Return : This method returns the sum of its arguments. Exception : It throws ArithmeticException - if the result overflows a long
Example :To show working of java.lang.Math.addExact() method.
java
// Java program to demonstrate working// of java.lang.Math.addExact() methodimport java.lang.Math;class Gfg1 { // driver code public static void main(String args[]) { long x = 9999999999l; long y = 1l; System.out.println(Math.addExact(x, y)); }} |
Output:
10000000000
java
// Java program to demonstrate working// of java.lang.Math.addExact() methodimport java.lang.Math;class Gfg2 { // driver code public static void main(String args[]) { long a = Long.MAX_VALUE; long b = 2l; System.out.println(Math.addExact(a, b)); }} |
Output:
Runtime Error :
Exception in thread "main" java.lang.ArithmeticException: long overflow
at java.lang.Math.addExact(Math.java:809)
at Gfg2.main(File.java:13)
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