?
Solved

Convert String to Double

Posted on 2001-07-05
7
Medium Priority
?
1,343 Views
Last Modified: 2008-02-26
Hi all,
 I am using JSP  and i need to convert string to double

Double.valueOf(mystring)  does not work..
 Any suggestion will be appreciated.
 
0
Comment
Question by:camasuvi
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 1

Expert Comment

by:gtloafer
ID: 6254708
how about use the constructor Double(String)  in class Double ?

0
 

Author Comment

by:camasuvi
ID: 6254713
you mean
double newValue = Double(myString)   ?
0
 
LVL 1

Expert Comment

by:gtloafer
ID: 6254721
Well not quite ....rather I was thinking like this :-

Double dWrap = new Double("200");
double dVal = dWrap.doubleValue(); //this is because dWrap is an object wrapper for the primitive type double ..


regards gtloafer
0
Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

 
LVL 1

Expert Comment

by:gtloafer
ID: 6254723
by the way what kind of string value are you passing ? ..Just curious thats why :-)

regards gtloafer
0
 
LVL 1

Expert Comment

by:poluru
ID: 6254742
hi,
Double.valueOf(myString).doubleValue();
its working nice...i have used it many times.
why its not working ??? just try once again...
0
 
LVL 1

Accepted Solution

by:
shahnazali earned 720 total points
ID: 6254769
use static method of Double
 double Double.parseDouble ( String s )

if u r not sure about your string that it contains double format number , catch NumberFormatException .

bye.

0
 

Expert Comment

by:anhphuongnn
ID: 6268553

Hi,

You can try this code. is it you need?

import java.io.*;
import java.lang.*;

public class StringToDouble {
  static void main(String agrs[]) {
        Object obj = new Double("1.101");
        System.out.println("test"+obj.toString());
  }

}


Best Regard

PhuongNguyen
0

Featured Post

Get real performance insights from real users

Key features:
- Total Pages Views and Load times
- Top Pages Viewed and Load Times
- Real Time Site Page Build Performance
- Users’ Browser and Platform Performance
- Geographic User Breakdown
- And more

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Suggested Courses
Course of the Month9 days, 20 hours left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question