testing a delimeter

[ben riches]

could someone please help me?
how can i test to see if the last token is a delimeter or not,
and if it is a delimeter (comma) i want to read it in as a blank string.
for example: ben,riches,
now i want three tokens.
ben
riches
"empty string"
also if the line starts with a comma i want it to print out a empty string.
could someone please give me some ideas?
thanks
ben

[Shane Roylance]

If you are using 1.4, I think this will do it:

Pattern pattern = Pattern.compile( String.valueOf(',') );
String[] splits = pattern.split( data );  

[ben riches]

no i am not using 1.4.
i am using 1.3
any suggestions

[Neil Laurance]

One way to do this:

import java.util.*;
public class Splitter {
  public static String[] split(String string, String delimiter) {
    StringTokenizer st = new StringTokenizer(string, delimiter);
    ArrayList a = new ArrayList();
    while(st.hasMoreTokens())
      a.add(st.nextToken());
    if(string.endsWith(delimiter))
      a.add("");
    return (String[]) a.toArray(new String[1]);
  }
  public static void main(String[] args) {
    String[] strings = split( "1,2,3,", "," );
    for(int i = 0; i < strings.length ; i++)
      System.out.println(strings[i]);
  }
}

Cheers Neil