Converting String into a Double value

Hi
iam really stuck can anyone please help that what i should do
to convert a String variable into a double value
iam using CLDC1.1 and MIDP2.0
please tell me how its done
Thank in advance

hi,
thanx alot it really worked now i want to convert the answer of the double variable back to string can you please tell me how to do it thanx alot

Similar Messages

How do you convert this String into a double?

Hi, in this code I want to convert String arg into a double. I'm trying to do this so that I can convert some string into a double in this calculator that I'm making. Here is the code:
public class par {
public static void main(String[] args) {
String str = "351";
double arg = new double(str); // should convert the string into a double
System.out.println(arg);
System.out.println(str);
I keep getting errors in line 4, if any of you could help me out here I'll be thankful, i'm kinda new to java and my search for java's equivalent of alof() (its a function in C libraries that converts char[] into a double)lead me to this.
Tony L.

Use the Following:
String num = "123.2";
double d = Double.parseDouble(num);

Convert string into XML inside BPEL

Hello ,
How to convert string into xml format ? And make element and define attribute inside it ??

There are several problems with your input:
1. Your xml is not well-formed because the attribute values should be enclosed withing double " quotes and not single ' quotes;
2. You use a prefix (sml) for the folowing part but you dont define the namespace:
<ids>
<VID ID="new"/>
<data>
<*sml:*attr name="std">
<sml:value></sml:value>
</sml:attr>
<sml:attr name="xde">
<sml:value></sml:value>
</sml:attr>
</data>
</ids>
Complete message should be:
<ids xmlns:sml="somenamespace">
<VID ID="new"/>
<data>
<sml:attr name="std">
<sml:value></sml:value>
</sml:attr>
<sml:attr name="xde">
<sml:value></sml:value>
</sml:attr>
</data>
</ids>
3. Do you assign this expression to a variable that is based on the schema of your message you want to parse
Regards,
Melvin
* TIP Answer the question as helpful or correct if it helps you , so that someone else will be knowing that this solution helped you or worked for you and also it gives points to the person who answers the question. *

How to convert string into date

Hi all,
I m new to JDeveloper
I m taking the date as a string then passing it as a string in the method.
I want to convert tht string into the date of format (DD-MON-YYYY) or any other format
require yur assistance in this job.
THANKXX in advance
ankit

Is this what you are looking for:
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("dd-MMMMM-YYYY");
java.util.Date date1 = null;
try
   date1 = formatter.parse("Thu Jun 3 09:09:30 2004");
catch(Exception e)
   e.printStackTrace();
System.out.println("Date1 in millis : " + date1.getTime());
System.out.println("Date1 in string : " + date1);
java.util.Date date2 = new java.util.Date(date1.getTime());
System.out.println("Date2 in string : " + date2);or look at http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html for more options

Msg Mapping :: Converting String ( source ) to double ( target ) Type

Hi
During my message mapping, I have to convert one String Field from Source Structure to Double ( primitive data type ) field in Target Structure.
String Weight   -
Source
Double Wght    -
Target
Java Code ****
<b>double Wght = Double.valueOf(Weight.trim()).doubleValue();</b>
But if I use this in UDF then it has default return type as String.
Can I change the return type in UDFs or is their any other way using which I can do this conversion.
Best Regards
- lalit chaudhary -

Hi Lalita,
Please see the following code try..
static public double parseDouble(String s)
      return doubleValueOf(s);
But XI always input ,output as string in MM.
is it your requirement..?
Regards
Chilla..

Converting String into SecretKey

Hi there,,
I'm having probs with decrypting my encrytped data.In fact I have encrypted the data on the client side and have sent the encrypted data and the key to the server database.On the server side I wanna retrieve the key and decrypt the encrypted data with the help of it but I'm finding no way to retrieve it as a key,,moreover while trying to cast the retreived string (having converted it to an Object),,I get the ClassCastException,,
SecretKey key=(SecretKey) myRetrievedKeyObject;
Hope somebody can help me out with this,,,sample code highly welcomed....
thanks...

Here's the class I'm using for encryption and decryption..
import java.security.*;
import java.io.*;
import java.util.StringTokenizer;
import javax.crypto.*;
import sun.misc.*;
import java.sql.*;
public class DesEncrypter {
Cipher ecipher;
Cipher dcipher;
DesEncrypter(SecretKey key) {
try {
ecipher = Cipher.getInstance("DES");
dcipher = Cipher.getInstance("DES");
ecipher.init(Cipher.ENCRYPT_MODE, key);
dcipher.init(Cipher.DECRYPT_MODE, key);
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
public String encrypt(String str) {
try {
// Encode the string into bytes using utf-8
byte[] utf8 = str.getBytes("UTF8");
// Encrypt
byte[] enc = ecipher.doFinal(utf8);
// Encode bytes to base64 to get a string
return new sun.misc.BASE64Encoder().encode(enc);
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
} catch (java.io.IOException e) {
return null;
public String decrypt(String str) {
try {
// Decode base64 to get bytes
byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str);
// Decrypt
byte[] utf8 = dcipher.doFinal(dec);
// Decode using utf-8
return new String(utf8, "UTF8");
} catch (javax.crypto.BadPaddingException e) {
} catch (IllegalBlockSizeException e) {
} catch (UnsupportedEncodingException e) {
} catch (java.io.IOException e) {
return null;
hope you can guide me...

"converting strings into integers in a array"

I'm really left scrating my head trying to figure this out.
What I have right now is this
public class NameManager
     private names[] collection; // collection of names
     private int count;
     public NameManager() // Creating an array which for now is empty
          collection = new names[1000];
          count = 0;
          String [] collection = {"boston", "Springfield", "New Haven",
                    "New York", "Albany"};
Its a namemanager for my road trip project which will be sort of like mapquest. What it does, or it's supposed to do is I have a array of names of cities, that represented as strings, in a array called, collection. What my proffeser wants me to do is turn the strings into integers, so in this elements in the array can be referenced .
It's probably so easy that I'll want to kick myself when I find out how to do it , but for whatever reason , all the information have found on the internet seems to go right over
If any body can give some idea of how to turn the string you see above into a set of intege s I would be so grateful.

turn the string into the index in the array
i.e.
boston => 0
springfield => 1
New Haven => 2
New York => 3
Albany => 4I should've mention this before but I need the names to go along with the numbers.
This is the directions from my proffesser, I know it's not the easiest to understand
but hopefully It will give you a better idea of what I'm talking about.
A name manager. This object turns strings into numbers. Every time a name is added to the name manager, it is checked to see if it has already been seen. If so, return the number previously assigned to the name. If not, increment the "number of known names" and return this number as well as remember the string for future reference. You can assume that there will be no more than 1000 names in the manager. Each name is a string.
A city. A city is a simple object: the city has a name and a number (at present).
I got most of this part done it just strings integers part that's getting me.

Convert rows into comma seperated values

Hello I have a question,
I have a table like this.
Memid values
1 10
1 20
2 30
3 50
3 60
3 10
i want to convert it like this
memid values
1 10,20
2 30
3 50,60,10
Can you please provide a solution..
Thanks

SELECT Memid,
STUFF((SELECT ',' + CAST([values] AS varchar(10))
FROM Table
WHERE Memid = t.Memid
FOR XML PATH(''),TYPE),value('.','varchar(max)'),1,1,'') AS [values]
FROM (SELECT DISTINCT Memid FROM Table)t
see
http://visakhm.blogspot.in/2014/01/rowset-concatenation-with-special.html
Please Mark This As Answer if it solved your issue
Please Vote This As Helpful if it helps to solve your issue
Visakh
My Wiki User Page
My MSDN Page
My Personal Blog
My Facebook Page

UCCX: unable to convert string into a number

Hi all,
I used the Get Digit String to pull a 4 digital numbers (stored as variable sYear) from a caller, this number is obviously stored as a string. Then i used 'set iYear=sYear' to conver this string to an integer.
I debuged the script, when I entered number of year without following #, it worked fine. If I entered number of year and followed by #, i got the message 'unable to conver string into a number'. Can someone help me with that?
Thanks a lot.

Hi Reena,
The UCCX version is 10.5.1.
I found the problem. It works after i changed input length to 5. 'The terminating key overrides the Maximum Input Length to terminate input'.
Thanks.

Converting String into double

Hi,
I want to convert 30.10 String Value into double.
I need to get the value as 30.10 as double only.
I tried but I am getting 30.1 only.
Please suggest me.
Thanks in advance..

user13797408 wrote:
Hi,
I want to convert 30.10 String Value into double.
I need to get the value as 30.10 as double only.
I tried but I am getting 30.1 only.
Please suggest me.
Thanks in advance..Don't do it. A short read of the documentation will tell you why (and why several such methods in many similar Java classes have been deprecated).
Simply said: 30.1 has no exact representation as a double; and it's quite possible that "30.10" will yield a different value from "30.1" (but hopefully not).
As far as printing out is concerned, you should check out NumberFormat or String.format(...). You are trying to convert a number stored in binary, that you already converted from a decimal numer (30.1) back to decimal. Sound like overkill to you?
PS: Have a look at BigDecimal. I think it may do what you want.
Winston

Convert string into java.sql.Date

Hi,
I want to convert a date in string form into java.sql.Date to persist into the database column with Date as its datatype in Oracle. I'm trying as follows:
import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class DateTest
public static void main(String[] args)
String strDate = "2002-07-16 14:45:01";
     System.out.println("strDate = "+strDate);
Date aDate = null;
try
if(strDate != null && !strDate.trim().equals(""))
     SimpleDateFormat aSDF = new SimpleDateFormat();
     aSDF.applyPattern("yyyy-MM-dd hh:mm:ss");
     java.util.Date utilDate = aSDF.parse(strDate);
System.out.println("utildate = "+utilDate);
     aDate = new Date(utilDate.getTime());
     aDate.setTime(utilDate.getTime());
     System.out.println("aDate = "+aDate);
catch (ParseException e)
System.out.println("Unable to parse the date - "+strDate);
catch (Exception ex)
ex.printStackTrace();
System.out.println("Caught Exception :"+ex.getMessage());
It gives the output as :
strDate = 2002-07-16 14:45:01
utildate = Tue Jul 16 14:45:01 IST 2002
aDate = 2002-07-16
If I put this value into the database table, I can see only the date. Time part is missing. Is this the problem with java.sql.Date or Oracle datatype Date? Please help me asap.
Thanks in advance.
Regards,
Rajapriya.R.

If I put this value into the database table, I can
see only the date. Time part is missing. Is this the
problem with java.sql.Date or Oracle datatype Date?This is not a problem, this is the defined behaviour of the Date type. RTFAPI and have a look at Timestamp, while you're at it.

Unable to convert string into binary

Hello,
I have a web application that does the following:
1. Takes in user information via form. This includes images.
2. Displays all the user information in a portfolio. Looks like the portfolio on this page:
http://wrapbootstrap.com/preview/WB00PN23G
3. When clicking on each item you are brought to a page that displays the form information and the images.
So far it works fine but instead of sending the images as binary to SQL database I send them as strings and the problem is now when I update the code on my cloud host the images no longer display but all the text displays fine. I am thinking the problem
is that instead of sending my images as strings I need to store them as binary and retrieve them as well. The problem is I did some research and have been unsuccessful in the ways mentioned.
Here is my code for the form:
//gather all the information from the form
//I call a stored procedure to send my data to my sql database
using (SqlCommand cmd = new SqlCommand("SaveImage", connection.con))
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@username", SqlDbType.VarChar).Value = UserName.Text;
cmd.Parameters.Add("@email", SqlDbType.VarChar).Value = Email.Text;
cmd.Parameters.Add("@project", SqlDbType.NVarChar).Value = Project.Text;
cmd.Parameters.Add("@description", SqlDbType.NVarChar).Value = Description.Text;
cmd.Parameters.Add("@img1", SqlDbType.VarBinary).Value = img1;
cmd.Parameters.Add("@img2", SqlDbType.VarChar).Value = img2;
cmd.Parameters.Add("@img3", SqlDbType.VarChar).Value = ppt;
cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
connection.con.Close();
//Here is the stored procedure
USE [TestDB]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER proc [dbo].[SaveImage]
@username varchar(100),
@email varchar(50),
@project nvarchar(MAX),
@description nvarchar(MAX),
@img1 varbinary(MAX),
@img2 nvarchar(MAX),
@img3 nvarchar(MAX) as
INSERT INTO ProjectTbl(UserName, Email, ProjectName, ProjectDescription, Image1, Image2, Image3)
VALUES (@username, @email, @project, @description, @img1, @img2,@img3)
// Here is the code for the page that displays all the projects submitted in the form of a portfolio (just the backend not the front-end)
public static string CreateSessionViaJavascript(string strTest)
Page objp = new Page();
objp.Session["controlID"] = strTest;
return strTest;
public static string imgString;
//public string[] array;
public List<string> image1 = new List<string>();
public List<string> image2 = new List<string>();
public List<string> image3 = new List<string>();
public List<string> finalimages = new List<string>();
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
LoadData();
private void LoadData()
var data = DataAccess.GetCurrentProject();
try
data.Columns.Add("hrefPath");
foreach (DataRow dr in data.Rows)
dr["hrefPath"] = "project.aspx?ID=" + dr["Id"];
DataListProjectImg.DataSource = data;
DataListProjectImg.DataBind();
catch (Exception ex)
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
var imgButton = sender as ImageButton;
if (imgButton != null)
Response.Redirect("project.aspx?ID=" + imgButton.CommandArgument, false);
//And here is the code for the each individual item that is clicked on in the portfolio. The images are displayed in a carousel along with the user entered data:
protected void Page_Load(object sender, EventArgs e)
//string code = "" + Session["Code"].ToString();
projectId = Request.QueryString["ID"];
if (!this.IsPostBack)
LoadData();
private void LoadData()
Connection connection = new Connection();
try
connection.connection1();
SqlCommand com = new SqlCommand("Select Image1,Image2,Image3,UserName,ProjectName,ProjectDescription,Email FROM ProjectTbl Where id='" + projectId + "'", connection.con);
SqlDataReader dataReader = com.ExecuteReader();
while (dataReader.Read())
image1.Src = dataReader["Image1"].ToString();
image2.Src = dataReader["Image2"].ToString();
image3.Src = (dataReader["Image3"] != null && (dataReader["Image3"].ToString().Contains(".ppt") || dataReader["Image3"].ToString().Contains(".pptx"))) ? "assets/img/PPTdefault2.png" : dataReader["Image3"].ToString();
hprPptLink.HRef = (dataReader["Image3"] != null && (dataReader["Image3"].ToString().Contains(".ppt") || dataReader["Image3"].ToString().Contains(".pptx"))) ? dataReader["Image3"].ToString() : "#";
Name.Text = dataReader["UserName"].ToString();
ProjectName.Text = dataReader["ProjectName"].ToString();
Description.Text = dataReader["ProjectDescription"].ToString();
Email.Text = dataReader["Email"].ToString();
FillDataForEditProjectModal(dataReader);
dataReader.Close();
catch (Exception)
throw;
private void FillDataForEditProjectModal(SqlDataReader dataReader)
UserName.Text = Convert.ToString(dataReader["UserName"]);
txtEmail.Text = Convert.ToString(dataReader["Email"]);
Project.Text = Convert.ToString(dataReader["ProjectName"]);
txtDescription.Text = Convert.ToString(dataReader["ProjectDescription"]);
protected void btnSaveProjDetails_Click(object sender, EventArgs e)
SaveUploadedFiles();
LoadData();
private void SaveUploadedFiles()
try
//validation part
if (Images1.HasFile)
if (!CheckImageFileType(Images1))
GenerateImageUploadJavascriptError("Image 1 Upload");
return;
if (Images2.HasFile)
if (!CheckImageFileType(Images2))
GenerateImageUploadJavascriptError("Image 2 Upload");
return;
if (Images3.HasFile)
if (!Images3.PostedFile.FileName.ToLower().Contains("ppt") || !Images3.PostedFile.FileName.ToLower().Contains("pptx"))
string script = "alert('Please Select PPT/pptx type only')";
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "pptUploadError", script, true);
return;
//End validation part
//uploading part
string image1Path = string.Empty;
string image2Path = string.Empty;
string image3Path = string.Empty;
if (Images1.HasFile)
image1Path = Path.GetFileName(Images1.PostedFile.FileName);
Images1.SaveAs(Server.MapPath(image1Path));
if (Images2.HasFile)
image2Path = Path.GetFileName(Images2.PostedFile.FileName);
Images2.SaveAs(Server.MapPath(image2Path));
if (Images3.HasFile)
image3Path = Path.GetFileName(Images3.PostedFile.FileName);
Images3.SaveAs(Server.MapPath(image2Path));
DataAccess.UpdateProjectDetails(UserName.Text, txtEmail.Text, Project.Text, txtDescription.Text, image1Path, image2Path, image3Path, projectId);
//end of uplaoding part
catch (Exception ex)
throw;
//Server.Transfer("current.aspx");

Hi compuluv,
To store it in the Image object. This image object must be converted to a byte array.
Based upon your code as below, please try to change Varchar to byte[].
cmd.Parameters.Add("@img1", SqlDbType.VarBinary).Value = img1;
cmd.Parameters.Add("@img2", SqlDbType.VarChar).Value = img2;
cmd.Parameters.Add("@img3", SqlDbType.VarChar).Value = ppt;
cmd.ExecuteNonQuery();
For more detailed information, please check
C# Save and Load Image from Database
By the way, since your project is a web application, I also found a asp.net version as below.
You can get some hints.
http://www.dbtutorials.com/retrieve/saving-retrieving-image-cs/
Best regards,
Kristin
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

How to convert string into date datatype

hi! there
i've a date in string format like MM/dd/yyyy
eg:String sDate = "01/30/2002";
and i want to convert this string format into java date format
same as 01/30/2002 only
when i write like this
SimpleDateFormat formatter = new SimpleDateFormat ("MM/dd/yyyy");
String sDate = "1/11/2002";
java.util.Date oDate = formatter.parse(sDate);
i'm getting the output
Fri Jan 11 00:00:00 GMT+05:30 2002
i just want the out put like 01/30/2002
plz,help me

Hi,
Just use back the SimpleDateFormat object you defined.
String myDateInStr = formatter.format(oDate);
this will format a java.util.Date object to a string representation according to the format you specified in the instantiation of SimpleDateFormat object.

How to turn a string into a date value

Hi All,
What is the best way to approach a date sorting issue I have?
A web service that I consume returns a date column in a string
format. Thus when the user clicks the column to sort a data grid by
that date value it sorts incorrectly.
I realize I could put a sort() on the grid or convert the
data somehow. I am hoping several people can give me what would be
considered a "best practice" from a code readability and
performance point of view.
Thannks in advance for your thoughts on this issue.

you dont have to convert anything just implement function and
asign it to Sort object's "compareFunction" property
The compare function must have the following signature:
function [name](a:Object, b:Object, fields:Array=null):int
This function must return the following
* -1, if a should appear before b in the sorted sequence
* 0, if a equals b
* 1, if a should appear after b in the sorted sequence
inside that function you might need a tmp conversion but
overall that should be it
for example (function can look like this :
if a===b) return 0;
if(myStringToDateConvertor(a) > myStringToDateConvertor(m)
) return 1;
if(myStringToDateConvertor(a) < myStringToDateConvertor(m)
) return -1;
return 0;
(remember sortField also has has compareFunction property but
you dont need that one).

Converting string into class instance

Hi all,
I want to convert a string which is a class instance in to that class object in the receiving class. I'm sending server's class object as string to another class which is a client.
Please any one suggest to solve this problem.
Thanks& regards,
Sai.

do you mean reflection?
http://java.sun.com/developer/technicalArticles/ALT/Reflection/
here is a simple example:
import java.lang.reflect.Field;
public class ThisClass{
public static void main(String[] args) {
try{
System.out.println("Variable Value: " + Variable);
String className = "ThisClass";
String varName = "Variable";
Class c = Class.forName("" + className);
Field f = c.getField("" + varName);
f.setInt(null, 123);
System.out.println("Variable Value: " + Variable);
} catch(Exception e){ System.out.println("Error: " + e); }
public static int Variable = 0;
}

Converting String into a Double value

Similar Messages

Maybe you are looking for