Java Math.addExact() method returns sum of its arguments.
public class JavaExample
{
public static void main(String[] args)
{
int i = 10, i2 = 20;
long l = 10000L, l2 = 15000L;
System.out.println(Math.addExact(i, i2));
System.out.println(Math.addExact(l, l2));
}
}
Output:
30 25000
Syntax of Math.addExact() method
Math.addExact(5, 7); //returns 12
addExact() Description
public static int addExact(int x, int y): Returns sum of its two integer arguments. It throws ArithmeticException, if one of the argument is Integer.MAX_VALUE.
public static long addExact(long x, long y): Returns sum of its two long arguments. It throws ArithmeticException, if one of the argument is Long.MAX_VALUE.
addExact() Parameters
It takes two parameters:
- x: First argument
- y: Second argument
addExact() Return Value
- Returns sum of the first and second argument.
Example 1: Sum of two integer arguments
public class JavaExample
{
public static void main(String[] args)
{
int x = 10, y = 20; //two int variables
System.out.println("Sum: "+Math.addExact(x, y));
}
}
Output:
Example 2: Sum of two long arguments
public class JavaExample
{
public static void main(String[] args)
{
long x = -10000L, y = 18000L; //two long variables
System.out.println("Sum: "+Math.addExact(x, y));
}
}
Output:
Example 3: Integer Overflow
public class JavaExample
{
public static void main(String[] args)
{
int x = 100, y = Integer.MAX_VALUE;
System.out.println(Math.addExact(x, y));
}
}
Output:
Example 4: Long Overflow
public class JavaExample
{
public static void main(String[] args)
{
long x = 15000L, y = Long.MAX_VALUE;
System.out.println(Math.addExact(x, y));
}
}
Output:
