Converting Java Vector to JavaScript Array

Hi ,
If any body know , plz let me Know ...
I want to Convert Java Vector of Vectors to Java Script Array of Arrays ..Thanks in Advace ..
SUBBA.

Hi,
I did something like this.I used hidden variables to pass all the info the client side and I called "onload" on the body tag.In this onload function call , i split that hidden variable into array of arrays.
This needs to be done using proper delimiters.
So the hidden variable wuold be of the form:
V1E1#V1E2#V1E3#V1E4$$V2E1#V2E2#V2E3#$$
V1E1 means Vector 1 Element 1.
You need to form this properly on server and pass it to the client where it would be split onLoad and stores appropriately into arrays.
thx.

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Java Vector to Javascript Array

Hi all, im facing a potential problem and would be very grateful for any help on the following
I want a Vector (rather several Vectors) comprising of serializable plain old java objects. I will have a JSP or plain HTML (probably JSP) page containing, amongst other things, a javascript array or set of arrays i want to have populated with the contents of the vectors . . .
Is this possible? not after code really just a feasible way of implementing this . . .it mi9ght turn out that it cann all be done via JSP / Java.
P.S. Asan after thought, when writing this,anyone know where i can find information regarding java accessing manipulating HTML DOM please
Thanks in advance for the help people.

Cool Thanks for your replies. At least i know that it cant be done i wont look for anything on HTML DOM .....
I dont believe i didnt see that method of implementation for the vector problem it seems so straight forward .. thats what I get for being a newb at both JSP and Javascript :)
Thanks again gus much appreciated

Converting a vector to an array

hello :-)
i am converting my vector into an array with this syntax:
String[] lmname = (String[])name.toArray();
and try to print my array with
for(int i=0; i<lmname.size; i++)
System.out.println(lmname);
unfortunately, i get this error:
java.lang.ClassCastException
what did i do wrong?

-- you cannot do that...
- if you still want to convert Vector into String[] then you can do this:
             Vector v=new Vector();
           v.add("1");
           v.add("2");
           v.add("3");
           v.add("4");
           String strVector[]=new String[v.size()];
           for (int i = 0; i<v.size(); i++)
                   strVector=new String((String)v.get(i));
     for (int i = 0; i<strVector.length; i++)
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... By the way, you can use List instead of Vector,,,

How to pass java arraylist into javascript arrays

Hi, i have declare an arraylist
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This is how i code.
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%>
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<%
%>how do i solve this problem?
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JTech wrote:
Hi,
Use Quotes around string value ( arr1[indexposition] = "stringvalue";), when assign to javascript array as below.
arr1[<%=x%>] = "<%=(String)list1.get(x)%>"; Regards,
Ram.Hi Ram,
How about using arr1 = <%=list.toArray()%> ??? Is this possible? I tried it but was not working on my IDE. Do you have any solutions for this??
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Converting a Vector to array

Hi,
How can I convert a Vector to an array of int ?
I tried this
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int [] res=(int [])v.toArray(new int[0]);but it doesn't work so I find another way:
//v is a Vector
int len=v.size();
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thanks

The code that I've posted belongs to a simple function whose aim is to fill an array with
all the prime numbers the are less than a given value.
The function must return an array of int (int[]).Since I don't know how many primes I will find, I need a growable array, so I decided to use Vector.If there is a better way, please tell me.
Here is the function prototype:
/**returns all prime numbers that are less than max_value*/
public int[] getPrimeNumbers(int max_value){
//function's body
}thank you in advance

Convert javascript array to java array

Is there any way possible to convert javascript array to java array?

if you will try to experiment a javascript array
putting it to a hidden element, it will be converted
to a string (comma delimited). You can get the value
of that element as a string and use StringTokenizer
class to put the values into a java arrayThanks, got it.

Pass javascript array to java

hii
I have to pass a javascript array to my java MyAction.do . So how can i do it???
Thnking You

Being a Java newbie, I can't give you a definitive on how to pass the array to a client-side applet, although it should be possible.
As for passing it to something server-side there are only a couple ways: in a GET request on the query string or in a POST. No matter what, you will have to flatten the array with some method or other, to convert it into a text string that can be parsed on the other end.
I personally favor using hidden form elements and posting the data, because otherwise you have to worry about urlencoding your query string. You could just use javascript itself to write a series of hidden text inputs and then submit the form, so all your form handler has to do is pick up the variables.
Let's say the array is named "myarray":
Code:
+<script language="Javascript">+
document.writeln("<form name=\"myform\" method=\"POST\" action=\"myserver/myhandler.jsp\">")
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I know this is clunky and "low-tech" but it will work, and has the benefit of working for any server-side platform that can handle forms

Is there any way of using arrays or vectors in JavaScript

In my JSP page when ever a value in the text field changes i have to store that value before submitting a form. When ever the value in the text field changes i have to use "OnChange" option but i have to store all these values in an array or vector. Is there any other way of doing this. I am using webwork. Can any one help me!!!!!!

JavaScript arrays are dynamic. You can add new values to the array and the array will grow in size.
//a is an array of size zero
var a = new Array();
a[0] = "something";
a[1] = "else";
a[a.length] = "Adding another String at the end of my array";But here's something to think about. If your web site absolutely needs JavaScript, what happens to your site when the user decides to disable JavaScript in his browser....?
I only use JavaScript to validate the user's input data, but I revalidate server-side in case JavaScript was disabled.

Converting XML String to MessageElement array

Hi,
I am trying to call a .NET web service from my Java client. I used WSDL2Java to generate the java classes for calling the .NET web service. The generated classes to call the service expects an array of org.apache.axis.message.MessageElement objects. I have a string representing an XML document which looks like this:
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Any updates on this?
I am facing a similar problem.

I want to convert a String into an array of bytes

I am working with telnet programming with java, where I want to convert login name and password of an online user in 'String' format to 'Bytes', plz help me. Which Input or Output Stream I can use

Assuming you've got the username / password into a String object, you can convert it to a byte[] array using this method.
String.getBytes();
Look at the String API
http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html
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hi,
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Hai asutoshdash
if you dont mind of viewing code u can use this else dont use, its not matters weatehr user will see you code or not if the user is professiona then its a big issue normal users not think of is for this dont send valuable infos like password etc to client u may send usernames
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archi

Jsp variables to javascript array, for loop dont work.

This works fine. con.getmake passes a different variable each time to the javascript array using a manual index.
<script>
make[0] = "<%= con.getmake() %>" ;
document.write(make[0]);
make[1] = "<%= con.getmake() %>" ;
document.write(make[1]);
make[2] = "<%= con.getmake() %>" ;
document.write(make[2]);
make[3] = "<%= con.getmake() %>" ;
document.write(make[3]);
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If I try and do the same with a for loop, It seems as though all the elements hold the same first variable retrieved from con.getmake, I am not getting the next variable from my java class.
<script>
for (var i= 0; i <= 2; i++)
make[i] = "<%= con.getmake() %>" ;
document.write(make);
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Hi,
Java is parsed once on the server which creates a HTML page, then it is passed to the client's browser where the javascript is executed. So con.getmake() is only executed once in java. You've got to execute your loop in java not javascript :
<script>
<%
for (int i= 0; i <= 2; i++)
%>
document.write("<%= con.getmake() %>");
<%
%>
</script>

Javascript array for iGrid & iCharts

Is there a way to push javascript array data to IGrid and iChart display templates?

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Regards,
Jeremy

Convert JPA Query getResultList to Array

I have been struggling with this problem for several hours now. All I have succeeded in doing is attempt every possible way to convert a List into an array and I just get errors.
     // create native SQL query
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        Project[] retVal = new Project[list.size()];
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Finally I tried the basic, should generate x-lint warning:
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Thanks.

You are almost right, you can solve this two ways as below:
First, use native query with result class reference.
Second, use JPA query with createQuery method.
Both the options should work, see code below:
// First option, create native SQL query with result class reference.
Query q = em.createNativeQuery("SELECT * FROM Project p",Project.class);
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// Query q = em.createQuery("SELECT p FROM Project p");
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list.toArray(retVal);*Cheers,
typurohit* (Tejas Purohit)

How to conver vector to Int array

Hi
I know toArray method can be used to convert vector to an array but what if I want to convert it to an int array?
Vector v = new Vector();
int r [] = new int [1];
v.add(2);
r = v.toArray()//gives errorHow can I cast it to return int Array rather than object array?

Vector v = new Vector(10);
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int r[] = new int[v.size()];
for(int i = 0; i < r.length; i++) {
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Converting Java Vector to JavaScript Array

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