Converting String to an array.

[Bhasker Reddy]

I have a String like
String param = "invoice number, file name, userid";
How do i convert this into an array and extract each values,
My String param can contain sometimes 3 words(with comma separated) or sometimes 5 or 2 , i get param dynamically.
can anyone suggest what to do

[Valentin Crettaz]

Hi,
what you can do is the following:

String param = "invoice number, file name, userid";
char[] array = param.toCharArray();

HIH
Val

[Valentin Crettaz]

Excuse me I think I did not quite answer your question...
The best way to extract tokens from a String object is with a StringTokenizer object, for instance:

String param = "123456,file.dat,user01";
StringTokenizer st = new StringTokenizer(param,",");
String[] tokens = new String[st.countTokens()];
int i=0;
while(st.hasMoreTokens()){
   tokens[i++] = st.nextToken();
}

All tokens of the initial String are now contained in the String array named "tokens".
HIH
Val

[Bhasker Reddy]

I want my array to be like this
String arr[] = {"invoice number", "file name", "userid" }
not individual characters

[Jose Botella]

this code prints:
invoice number
file name
userid

import java.util.*;
public class Test { 
    public static void main(String[] args) {
String param = "invoice number, file name, userid";
StringTokenizer st = new StringTokenizer(param, ",");
while(st.hasMoreElements())  
            System.out.println(st.nextElement());
    }
}

hope helps

[Jose Botella]

oops...
I din't see the previous post

[Bhasker Reddy]

Thanks Guys
i got it

[Roopa Bagur]

When you do a toCharArray the commas are also stored in the elements to avoid this use StringTokenizer with comma as the delimiter.
For example:
String[] s = new String[10];
String param = "invoice number, file name, userid";
StringTokenizer st = new StringTokenizer(param,",");
int i = 0;
while (st.hasMoreTokens())
{
s[i]= st.nextToken();
System.out.println("String[] elements:"+s[i]);
i++;
}
I hope your requirements were met.
Roopa.

Originally posted by Bhasker Reddy:
I have a String like
String param = "invoice number, file name, userid";
How do i convert this into an array and extract each values,
My String param can contain sometimes 3 words(with comma separated) or sometimes 5 or 2 , i get param dynamically.
can anyone suggest what to do