Java - Double Class longValue() Method

Double class longValue() method: Here, we are going to learn about the longValue() method of Double class with its syntax and example. By Preeti Jain Last updated : March 23, 2024

Double class longValue() method

longValue() method is available in Double class of java.lang package.
longValue() method is used to return the value denoted by this Double object converted to type long (by casting).
longValue() method is a non-static method, it is accessible with class object only and if we try to access the method with the class name then we will get an error.
longValue() method does not throw an exception at the time of conversion from double to long.

Syntax

public long longValue();

Parameters

It does not accept any parameter.

Return Value

The return type of this method is long, it returns a converted (from type double to long) value represented by this Double object.

Example

// Java program to demonstrate the example 
// of longValue() method of Double class

public class LongValueOfDoubleClass {
    public static void main(String[] args) {
        // Variables initialization
        double d1 = 18.20;
        double d2 = 19.20;

        // It returns double value denoted by this Double do1 object
        // and converted to a long by calling value1.longValue()
        Double value1 = new Double(d1);

        // Display value1 result
        System.out.println("value1.longValue(): " + value1.longValue());

        // It returns double value denoted by this Double value2 object
        // and converted to a long by calling value2.longValue()
        Double value2 = new Double(d2);

        // Display value2 result
        System.out.println("value2.longValue(): " + value2.longValue());
    }
}

Output

value1.longValue(): 18
value2.longValue(): 19

Java - Double intValue() Method

Java - Double floatValue() Method