Java Math incrementExact() Method

The incrementExact() method of Math class returns the argument incremented by one, throwing an exception if the result overflows an int or a long.

Syntax:

1. public static int incrementExact (int a)
2. public static int incrementExact (long a)

Parameters:

The parameters ‘f1’ and ‘f2’ represent the dividend and the divisor.

Return Value:

The incrementExact () method returns the result after incrementing the argument by one.

Throws:

The incrementExact () method throws:

ArithmeticException – if the result overflows an int or long

Example 1:

public class JavaMathIncrementExactExample1 {
    public static void main(String[] args) {
        int a=90;
        //returns the result after incrementing the int value
        System.out.println("Incremented value : "+Math.incrementExact(a));
    }
}

Output:

Incremented value : 91

Example 2:

public class JavaMathIncrementExactExample2 {
    public static void main(String[] args) {
        //type cast the value Math.PI into int
        int a= (int) Math.PI;
        System.out.println("Incremented value for
"+Math.PI+" = "+Math.incrementExact(a));
    }
}

Output:

Incremented value for 3.141592653589793 = 4

Example 3:

public class JavaMathIncrementExactExample3 {
    public static void main(String[] args) {
        //returns an exception is the result overflows a long
        long x = Long.MAX_VALUE;
        System.out.println("Incremented value for "+x+":
"+Math.incrementExact(x));
    }
}

Output:

Exception in thread "main" java.lang.ArithmeticException: long overflow
at java.lang.Math.incrementExact(Math.java:926)
at com.TutorialsAndExamples.JavaMathIncrementExactExample3.main
(JavaMathIncrementExactExample3.java:7)

Example 4:

public class JavaMathIncrementExactExample4 {
    public static void main(String[] args) {
        //returns the result after incrementing the long value
        long x = Long.MIN_VALUE;
        System.out.println("Incremented value for "+x+":
"+Math.incrementExact(x));
    }
}

Output:

Incremented value for -9223372036854775808: -9223372036854775807