Java Short doubleValue() Method

The Short.doubleValue() method in Java is used to convert a Short object to a double primitive.

Table of Contents

1. Introduction
2. doubleValue() Method Syntax
3. Examples
   • Converting a Short to double
   • Performing Arithmetic Operations
   • Handling null Values
4. Real-World Use Case
5. Conclusion

Introduction

The Short.doubleValue() method is an instance method in the Short class in Java. It converts a Short object to a double primitive. This method is useful when you need to perform operations that require double precision on Short objects.

doubleValue()() Method Syntax

The syntax for the Short.doubleValue() method is as follows:

public double doubleValue()

The method returns:

• The double value represented by this Short object.

Examples

Converting a Short to double

The doubleValue() method can be used to convert a Short object to a double primitive.

Example

public class ShortToDoubleExample {
    public static void main(String[] args) {
        Short shortObject = 123;
        double doubleValue = shortObject.doubleValue();

        System.out.println("Double value of 123: " + doubleValue);
    }
}

Output:

Double value of 123: 123.0

In this example, the Short object 123 is converted to the double primitive 123.0.

Performing Arithmetic Operations

You can use the doubleValue() method to extract the double primitive from a Short object and perform arithmetic operations.

Example

public class ArithmeticOperationsExample {
    public static void main(String[] args) {
        Short shortObject1 = 50;
        Short shortObject2 = 30;

        double sum = shortObject1.doubleValue() + shortObject2.doubleValue();
        double difference = shortObject1.doubleValue() - shortObject2.doubleValue();
        double product = shortObject1.doubleValue() * shortObject2.doubleValue();
        double quotient = shortObject1.doubleValue() / shortObject2.doubleValue();

        System.out.println("Sum: " + sum);
        System.out.println("Difference: " + difference);
        System.out.println("Product: " + product);
        System.out.println("Quotient: " + quotient);
    }
}

Output:

Sum: 80.0
Difference: 20.0
Product: 1500.0
Quotient: 1.6666666666666667

In this example, the Short objects 50 and 30 are converted to double primitives, and arithmetic operations are performed on them.

Handling null Values

When dealing with Short objects, it's important to handle null values to avoid NullPointerException.

Example

public class NullHandlingExample {
    public static void main(String[] args) {
        Short shortObject = null;

        if (shortObject != null) {
            double doubleValue = shortObject.doubleValue();
            System.out.println("Double value: " + doubleValue);
        } else {
            System.out.println("The Short object is null.");
        }
    }
}

Output:

The Short object is null.

In this example, the code checks if the Short object is null before attempting to convert it to a double primitive.

Real-World Use Case

Converting User Input

In a real-world application, you might need to convert user input, which is often in the form of Short objects, to double primitives for calculations that require higher precision.

Example

import java.util.Scanner;

public class UserInputExample {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter a short number: ");

        Short shortObject = scanner.nextShort();
        double doubleValue = shortObject.doubleValue();

        double result = doubleValue * 1.5;
        System.out.println("The result of multiplying the input by 1.5 is: " + result);

        scanner.close();
    }
}

Output (example input 123):

Enter a short number:
The result of multiplying the input by 1.5 is: 184.5

In this example, the user input is read as a Short object and then converted to a double primitive for a calculation.

Conclusion

The Short.doubleValue() method in Java is a straightforward way to convert Short objects to double primitives. By understanding how to use this method, you can efficiently handle tasks that involve converting Short objects to double primitives in your Java applications. Whether you are performing arithmetic operations, handling user input, or avoiding null values, the doubleValue() method provides a reliable solution for these tasks.