string manipulation

[fang eve]

i have a string like this: aaa,bbb,cccc

i want to extract out to be like,
aaa, 1st element
bbb, 2nd element
ccc, 3rd element

of a vector. How should i do it?

[Shaan Shar]

[B]import java.util.Iterator;
import java.util.StringTokenizer;
import java.util.Vector;
 
public class Sample {
public static void main(String[] args) {
String str = "aaa,bbb,cccc";
StringTokenizer st = new StringTokenizer(str, ",");
Vector c = new Vector();
int i = 0;
while (st.hasMoreTokens()) {
String stNext = st.nextToken();
System.out.println(stNext + ", " + (i + 1) + " element");
c.add(i++, stNext);
}
Iterator itr = c.iterator();
while (itr.hasNext()) {
System.out.println(": " + itr.next());
}
}
}[/B]

According to me, I Hope it helps you...

If any concern still then revert me back.


[ July 11, 2006: Message edited by: Ankur Sharma ]

[Michael Dunn]

java.util.Vector vec = new java.util.Vector(java.util.Arrays.asList("aaa,bbb,cccc".split(",")));

[Shaan Shar]

Originally posted by Michael Dunn:
java.util.Vector vec = new java.util.Vector(java.util.Arrays.asList("aaa,bbb,cccc".split(",")));

Oops...

I wish I would like to give this solution...

Thanks Michael Dunn

Very smart solution...

[fang eve]

Now i understand how split() is being used. I have another problem here. for example my string is aaa,bbb,ccc,aaa.
i want to take out all the elements, but i do not want to have repetition of element.

i want it to be:
aaa
bbb
ccc

the element aaa, only appear once.

[Keith Lynn]

You can use a Set.

[Rusty Shackleford]

StringTokenizer is only around for legacy issues, and should never be used in new code.

[fang eve]

what you mean? i dont get you, do you have sample codes? How to use a Set?
[ July 11, 2006: Message edited by: fang eve ]

[Keith Lynn]

A Set is an interface that doesn't allow duplicates.

It is part of the Collections API.

If you look in the API at HashSet, you will see an example of a Set.

[fang eve]

Oh ok, thanks

Another question here, i have the string like," a.content", "contents".

i have done a function to remove anything before the full-stop. but however, if i pass in the 2nd string ("contents"), it throws me an error.
How i check the string whether if it contain full-stop?
[ July 11, 2006: Message edited by: fang eve ]

[Richard Green]

http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html

have a look at the indexOf function