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Showing content from https://www.geeksforgeeks.org/java/double-longvalue-in-java-with-examples/ below:

Double longValue() in Java with Examples

Last Updated : 11 Jul, 2025

The

method of

class is a built in method to return the value specified by the calling object as long after type casting.

DoubleObject.longValue()

It takes no parameters.

It returns an

value i.e. the type casted value of the DoubleObject.

Below is the implementation of the above method.

// Java Code to implement 
// longValue() method of Double class
class GFG {
    // Driver method
    public static void main(String[] args)
    {

        // creating a Double object
        Double d = new Double(1022);

        // longValue() method of Double class
        // typecast the value
        long output = d.longValue();

        // printing the output
        System.out.println(output);
    }
}

1022

// Java Code to implement 
// longValue() method of Double class
class GFG {
    // Driver method
    public static void main(String[] args)
    {

        // creating a Double object
        Double d = new Double(-1023.23);

        // longValue() method of Double class
        // typecast the value
        long output = d.longValue();

        // printing the output
        System.out.println(output);
    }
}

-1023

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