Java – Find Int Argument Incremented – incrementExact() Method with Examples

incrementExact() method exists in Math class of java.lang package.
Since: JDK1.8

The declaration of incrementExact() method is:

public static int incrementExact(int x)

The syntax of incrementExact() method in Java is:

 
java.lang.Math.incrementExact(int x)

Example

/*
*Find the argument incremented by one of given input(int) without importing the 
java.lang Package.
*/
public class JavaMathExample {
    public static void main(String[] args) {
        //Declaring variables
        int x = -4876.1874;
        int result;
        //Assign argument incremented by one of x to result variable
        result = java.lang.Math.incrementExact(x);
        //Printing result to the console
        System.out.println(result);
    }
}

Output:

Example
By importing java.lang package the syntax of incrementExact() method can be used as:

/*
*Find the argument incremented by one of given input(int) by importing the java.lang Package.
*/
import java.lang.*;  //importing package

public class JavaMathExample {
    public static void main(String[] args) {
        
        //Declaring variables
        int x = -68.97;
        int result;
        
        //Assign argument incremented by one of x to result variable
        result = Math.incrementExact(x);
        
        //Printing result to the console
        System.out.println(result);
    }
}

Output:

ArithmeticException – if the result overflows an int
Example

/*
*This example shows some special cases of incrementExact() method in Java
*/
import java.lang.*; //importing java.lang package

public class JavaMathExample {
    public static void main(String[] args) {

        //Declaring variables
        int positiveZero = 0;
        int negativeZero = -0;
        int positiveInfinity = Int.POSITIVE_INFINITY;
        int negativeInfinity = Int.NEGATIVE_INFINITY;
        int nan = Double.NaN;
        int result;

        //Here argument is positive zero, output will also be positive zero
        result = Math.incrementExact(positiveZero);
        System.out.println(result);

        //Here argument is negative zero, output will be positive zero
        result = Math.incrementExact(negativeZero);
        System.out.println(result);

        //Here argument is positive infinity, output will also be positive infinity
        result = Math.incrementExact(positiveInfinity);
        System.out.println(result);

        //Here argument is negative infinity, output will be negative infinity
        result = Math.incrementExact(negativeInfinity);
        System.out.println(result);

        //Here argument is NaN, output will be NaN
        result = Math.incrementExact(nan);
        System.out.println(result);


    }

}

Output:

x – Where x is any valid int input value. This parameter is required.

If the x parameter is not a number incrementExact() method returns an error.
If there is no argument (x – input value) passes to the method, the compiler will produce an error.Example

/*
*This example returns a compile time error
*/
import java.lang.*; //importing java.lang package

public class JavaMathExample {
    public static void main(String[] args) {

        //Declaring variables
        String x = "Not a number";
        int result;

        //argument is not a number
        result = Math.incrementExact(x);
        System.out.println(result);

        //Here no argument is used
        result = Math.incrementExact();
        System.out.println(result);


    }

}

Output:
Error

incrementExact() method returns the argument incremented by one of a int value for the given input (x – parameter).

import java.lang.*; //importing java.lang package

public class JavaMathExample {
    public static void main(String[] args) {
        int negativeValue = -18.869;
        int positiveValue = 27.78639;
        int zero = 0;
        System.out.println("argument incremented by one of a Negative Value: "+Math.incrementExact(negativeValue));
        System.out.println("argument incremented by one of a Positive Value: "+Math.incrementExact(positiveValue));
        System.out.println("argument incremented by one of Zero: "+Math.incrementExact(zero));

    }
}

Output:

import java.lang.*; //importing java.lang package

public class JavaMathExample {
    public static void main(String[] args) {
        //Declare and initialize an array containing int values
        int test [] = { Int.MAX_VALUE, Int.MIN_VALUE, 
		Int.NaN, Int.MIN_EXPONENT, 42.867e-12, 16.852, 0, -2.58, -78.8569e7 };

        //Use for loop to print argument incremented by one of each element of the array
        for (int i=0; i < test.length; i++) {
            System.out.println(  Math.incrementExact(test[i])  );
        }

    }
}

Output: