Java Math toIntExact() Method

The toIntExact() method of Java Math class returns the int value of the given long argument, throwing an exception if the value overflows an int.

Syntax:

public static int toIntExact (long value)

Parameters:

The parameter ‘value’ represents the long value.

Return Value:

The toIntExact () method returns an int value.

Throws:

The toIntExact () method throws:

ArithmeticException- if the argument overflows an int

Example 1:

public class JavaMathToIntExactExample1 {
    public static void main(String[] args) {
        Long a=-985565437l;
        //returns the int value of the given long argument
        System.out.println("Int value of "+ a+" is "+Math.toIntExact(a));
    }
}

Output:

Int value of -985565437 = -985565437

Example 2:

public class JavaMathToIntExactExample2 {
    public static void main(String[] args) {
        Long a=0l;
        //returns zero, if argument is zero
        System.out.println("Int value of "+ a+" is "+Math.toIntExact(a));
    }
}

Output:

Int value of 0 is 0

Example 3:

public class JavaMathToIntExactExample3 {
    public static void main(String[] args) {
        Long a=Long.MIN_VALUE;
        //throws an exception if the value overflows an int
        System.out.println("Int value of "+ a+" is "+Math.toIntExact(a));
    }
}

Output:

Exception in thread "main" java.lang.ArithmeticException: integer overflow
            at java.lang.Math.toIntExact(Math.java:1011)
            at com.TutorialAndExamples.JavaMathToIntExactExample3.main(JavaMathToIntExact
Example3.java:7)

Example 4:

public class JavaMathToIntExactExample4 {
    public static void main(String[] args) {
        Long a=Long.MIN_VALUE;
        //throws an exception if the value overflows an int
        System.out.println("Int value of "+ a+" is "+Math.toIntExact(a));
    }
}

Output:

Exception in thread "main" java.lang.ArithmeticException: integer overflow
            at java.lang.Math.toIntExact(Math.java:1011)
            at com.TutorialAndExamples.JavaMathToIntExactExample4.main(JavaMathToIntExact
Example4.java:7)