Java Number doubleValue() Method

The doubleValue() is a method of Java Number class which returns the value of the specified number casted as a double equivalent. This method may also involve in rounding or truncation.

Syntax:

Following is the declaration of doubleValue() method:

Parameter:

DataType	Parameter	Description
NA	NA	This method does not accept any parameter.

Returns:

The doubleValue() method returns the numeric value represented by this object after conversion to type double.

Exceptions:

Compatibility Version:

Java 1.0 and above

Example 1

public class NumberDoubleValueExample1 {
	public static void main(String[] args) {	
	     //Get a number as integer
	     Number x = 123456;	    
	     //Print their value as double
	     System.out.println("x as integer : " +x );
	     System.out.print("x as double: " + x.doubleValue());	    
	     }
}

Test it Now

Output:

x as integer : 123456
x as double: 123456.0

Example 2

import java.util.Scanner;
public class NumberDoubleValueExample2 {
	public static void main(String[] args) {
		//Input your value
		System.out.print("Enter the Desired Value : ");
		Scanner sc = new Scanner(System.in);
            //Get value from user console
		Integer i = sc.nextInt();		
		System.out.println("Double Value is: " + i.doubleValue());
		sc.close();
	      }
}

Output:

Enter the Desired Value : 987654321
Double Value is: 9.87654321E8

Example 3

public class NumberDoubleValueExample3 {
	public static void main(String[] args) {
		//Number as integer
        Integer x = 1234567898;
        //Print value as double
        System.out.println(x.doubleValue());
        //Number as float
        Float y = 934545876f;
        //Print value as double
        System.out.println(y.doubleValue());
        //Number as Double
        Double D = 53454.43654;
        //Print value as double
        System.out.println(D.doubleValue());
        //Number as Long
        Long L = 73454587659675454l;
        //Print value as double
        System.out.println(L.doubleValue());       
	    }
}

Test it Now

Output:

1.234567898E9
9.34545856E8
53454.43654
7.3454587659675456E16

Next TopicJava Number Class

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}

Java Tutorial

Control Statements

Java Object Class

Java Inheritance

Java Polymorphism

Java Abstraction

Java Encapsulation

Java Array

Java OOPs Misc

Java Number doubleValue() Method

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1

Example 2

Example 3

Feedback

Help Others, Please Share

Learn Latest Tutorials

Preparation

Trending Technologies

B.Tech / MCA