Byte doubleValue() method in Java with examples

Last Updated : 11 Jul, 2025
The doubleValue() method of Byte class is a built in method in Java which is used to return the value of this Byte object as double. Syntax 
ByteObject.doubleValue()
Return type: It returns the value of ByteObject as double. Below is the implementation of doubleValue() method in Java: Example 1: Java 
// Java code to demonstrate
// Byte doubleValue() method

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

        // byte value
        byte a = 17;

        // wrapping the byte value
        // in the wrapper class Byte
        Byte b = new Byte(a);

        // doubleValue of the Byte Object
        double output = b.doubleValue();

        // printing the output
        System.out.println("Double value of "
                           + a + " is : " + output);
    }
}
Output: 
Double value of 17 is : 17.0
Example 2: Java 
// Java code to demonstrate
// Byte doubleValue() method

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

        String value = "17";

        // wrapping the byte value
        // in the wrapper class Byte
        Byte b = new Byte(value);

        // doubleValue of the Byte Object
        double output = b.doubleValue();

        // printing the output
        System.out.println("Double value of "
                           + b + " is : " + output);
    }
}
Output: 
Double value of 17 is : 17.0
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