The java.lang.StrictMath.toIntExact() is an inbuilt method in Java is used to return the value of the long argument. If the result overflows an int it will throw an exception. Object creation is not mandatory as toIntExact(long num) is static.
Syntax:
public static int toIntExact(long num)
Parameters: The method accepts one parameter num of long type whose int value is returned.
Return Value: The method returns the argument as an int.
Exception: If the argument overflows an int it throws ArithmeticException.
Examples:
Input: num = 2727l Output: 2727 Input: num = -86262l Output: -86262
Below programs illustrate the java.lang.StrictMath.toIntExact() method:
Program 1:
// Java program to demonstrate working// of java.lang.StrictMath.toIntExact() method import java.lang.StrictMath; class Geeks { // driver code public static void main(String args[]) { // Get the long value // whose IntExact value is needed long num = 266526l; // Get the IntExact value // using toIntExact() method int intvalue = StrictMath.toIntExact(num); // Print the IntExact value System.out.print("IntExact value of " + num + " = " + intvalue); }} |
Output:
IntExact value of 266526 = 266526
Program 2:
// Java program to demonstrate working// of java.lang.StrictMath.toIntExact() method import java.lang.StrictMath; class Geeks { // driver code public static void main(String args[]) { // Get the long value // whose IntExact value is needed long num = -7226526l; // Get the IntExact value // using toIntExact() method int intvalue = StrictMath.toIntExact(num); // Print the IntExact value System.out.print("IntExact value of " + num + " = " + intvalue); }} |
Output:
IntExact value of -7226526 = -7226526
Program 3: To demonstrate ArithmeticException
// Java program to demonstrate working// of java.lang.StrictMath.toIntExact() method import java.lang.StrictMath; class Geeks { // driver code public static void main(String args[]) { try { // Get the long value // whose IntExact value is needed long num = 654456645546l; System.out.println("Trying to get " + "IntExact value of: " + num); // Get the IntExact value // using toIntExact() method int intvalue = StrictMath.toIntExact(num); // Print the IntExact value System.out.print("IntExact value of " + num + " = " + intvalue); } catch (Exception e) { System.out.println("Exception thrown: " + e); } }} |
Output:
Trying to get IntExact value of: 654456645546 Exception thrown: java.lang.ArithmeticException: integer overflow