StringTokenizer
 

Hi

How to read a string, a substring at a time.

The StringTokenizer class only breaks strings by 3 delimiters: tab, space,
comma.

consider

StringTokenizer tokeinzer = new StringTokenizer(mystring);

while (tokenizer.hasMoreTokens())
{
//break string into substrings of 5 characters
}

Thanks in advance

AAa

Re: StringTokenizer
 

"Anony!" <someone@something.com> wrote in message
news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> Hi
> How to read a string, a substring at a time.
> The StringTokenizer class only breaks strings by 3 delimiters: tab,
space,
> comma.
> consider
> StringTokenizer tokeinzer = new StringTokenizer(mystring);
> while (tokenizer.hasMoreTokens())
> {
> //break string into substrings of 5 characters
> }

from SUN:

StringTokenizer is a legacy class that is retained for compatibility
reasons although its use is discouraged in new code. It is recommended
that anyone seeking this functionality use the split method of String or
the java.util.regex package instead



--
No matter what happens, somebody will find a way to take it too
seriously.

Re: StringTokenizer
 

"VisionSet" <spam@ntlworld.com> wrote in message
news:disNc.377$6p4.207@newsfe1-gui.ntli.net...
>
>
> "Anony!" <someone@something.com> wrote in message
> news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> > Hi
> >
> > How to read a string, a substring at a time.
> >
> > The StringTokenizer class only breaks strings by 3 delimiters: tab,
space,
> > comma.
>
> No, you can supply any delimiters you want.

I tried to figure out how to set a delimiter of 5 characters. Don't think
such as a thing exist for delimiters.

I may have to go java.io or something

aAa

Re: StringTokenizer
 

"Anony!" <someone@something.com> wrote in message
news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> Hi
>
> How to read a string, a substring at a time.
>
> The StringTokenizer class only breaks strings by 3 delimiters: tab, space,
> comma.

No, you can supply any delimiters you want.

--

Mike W

Re: StringTokenizer
 

On Tue, 27 Jul 2004 13:48:59 +0200, "jAnO!"
<j.groot@donotspam.kpn.com> wrote:

>"Anony!" <someone@something.com> wrote in message
>news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
>> Hi
>> How to read a string, a substring at a time.
>> The StringTokenizer class only breaks strings by 3 delimiters: tab,
>space,
>> comma.
>> consider
>> StringTokenizer tokeinzer = new StringTokenizer(mystring);
>> while (tokenizer.hasMoreTokens())
>> {
>> //break string into substrings of 5 characters
>> }
>
>from SUN:
>
>StringTokenizer is a legacy class that is retained for compatibility
>reasons although its use is discouraged in new code. It is recommended
>that anyone seeking this functionality use the split method of String or
>the java.util.regex package instead

split() is not approriate to this task, either. If you just want to
break the string into five-character chunks, use substring().

Re: StringTokenizer
 

In article <ZvrNc.18984$K53.5115@news-server.bigpond.net.au>,
someone@something.com says...
>
> "VisionSet" <spam@ntlworld.com> wrote in message
> news:disNc.377$6p4.207@newsfe1-gui.ntli.net...
> >
> >
> > "Anony!" <someone@something.com> wrote in message
> > news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> > > Hi
> > >
> > > How to read a string, a substring at a time.
> > >
> > > The StringTokenizer class only breaks strings by 3 delimiters: tab,
> space,
> > > comma.
> >
> > No, you can supply any delimiters you want.
>
> I tried to figure out how to set a delimiter of 5 characters. Don't think
> such as a thing exist for delimiters.
>
> I may have to go java.io or something
>
> aAa
>
>
>


As said, you can supply any delimiters.

http://java.sun.com/j2se/1.4.2/docs/...Tokenizer.html

Re: StringTokenizer
 

As said in other replys u can set any delimiters eg-: new
StringTokenizer(mystring,"a,b,c,d",true);
the boolean specifys whether or not the delimiters are returned as tokens.
Although i dont think StringTokenizer will do what ure expecting.
You could use :- char[] cArray=mystring.toCharArray();
then cast the first 5 chars back into a string, then the next 5 chars, then
the next etc...

"Anony!" <someone@something.com> wrote in message
news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> Hi
>
> How to read a string, a substring at a time.
>
> The StringTokenizer class only breaks strings by 3 delimiters: tab, space,
> comma.
>
> consider
>
> StringTokenizer tokeinzer = new StringTokenizer(mystring);
>
> while (tokenizer.hasMoreTokens())
> {
> //break string into substrings of 5 characters
> }
>
> Thanks in advance
>
> AAa
>
>


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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Re: StringTokenizer
 

Anony! <someone@something.com> wrote:
> "VisionSet" <spam@ntlworld.com> wrote in message
> news:disNc.377$6p4.207@newsfe1-gui.ntli.net...

[Discussion on java.util.StringTokenizer]

>> No, you can supply any delimiters you want.
>
> I tried to figure out how to set a delimiter of 5 characters. Don't think
> such as a thing exist for delimiters.

Yes, there is. For example the 5 charrcters '1', '2', '3', '4' and '5':

StringTokenizer tokenizer = new StringTokenizer ("test", "12345");


> I may have to go java.io or something

If you want to split a String into chucks of 5 characters, just use
String#substring(int) or String#substring(int, int), as pointed out by
Alan Moore. The java.io package is overkill, unless you were using it to
read the String's anyway.


--
Oscar Kind http://home.hccnet.nl/okind/
Software Developer for contact information, see website

PGP Key fingerprint: 91F3 6C72 F465 5E98 C246 61D9 2C32 8E24 097B B4E2

Re: StringTokenizer
 

lets see i have a string

String mystring = "asdfergghjukluipfkjg";

i want to break it up into:

asdfe
rgghj
uklui
pfkjg

using this:

StringTokenizer(mystring,"a,b,c,d,e",true);

as u can see the first 5 characters dont match the pattern abcde

Another problem is that i cant use substring(startIndex, endIndex) becuase
that would be hardcoding it. I want to be able to pass the string through a
command-line argument and break the string into substrings of 5 characters
in length. I didn't think it would be so damn difficult.

Thanks anyway
AaA



"BADBOY" <badboy_boogey@hotmail.com> wrote in message
news:yswNc.516$oa1.486@newsfe5-gui.ntli.net...
> As said in other replys u can set any delimiters eg-: new
> StringTokenizer(mystring,"a,b,c,d",true);
> the boolean specifys whether or not the delimiters are returned as tokens.
> Although i dont think StringTokenizer will do what ure expecting.
> You could use :- char[] cArray=mystring.toCharArray();
> then cast the first 5 chars back into a string, then the next 5 chars,
then
> the next etc...
>
> "Anony!" <someone@something.com> wrote in message
> news:M7rNc.18954$K53.11899@news-server.bigpond.net.au...
> > Hi
> >
> > How to read a string, a substring at a time.
> >
> > The StringTokenizer class only breaks strings by 3 delimiters: tab,
space,
> > comma.
> >
> > consider
> >
> > StringTokenizer tokeinzer = new StringTokenizer(mystring);
> >
> > while (tokenizer.hasMoreTokens())
> > {
> > //break string into substrings of 5 characters
> > }
> >
> > Thanks in advance
> >
> > AAa
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.726 / Virus Database: 481 - Release Date: 22/07/2004
>
>


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.726 / Virus Database: 481 - Release Date: 22/07/2004

Re: StringTokenizer
 

Anony! wrote:

> lets see i have a string
>
> String mystring = "asdfergghjukluipfkjg";
>
> i want to break it up into:
>
> asdfe
> rgghj
> uklui
> pfkjg
>
> using this:
>
> StringTokenizer(mystring,"a,b,c,d,e",true);

Sorry, but you need to restate your problem in a way that makes sense.
Your declaration of StringTokenizer will break any String whenever
it finds a "a" OR a "," (Comma) or a "b" etc.

Did you even try this declaration in code? What did you get.

If you tokenized your string on a, b, c, d, or e and set returnToken true
you'd get:
a <- one of the separators
s <- between separators
d <- another separator
f <- between ...
e <- another ...
rgghjukluipfkjg <-- all the rest

Does that help explain what StringTokenizer does ?

If you really want groups of exactly 5 characters, it sounds like
String.substring is your answer. The suggestion to use char[] sounds
a lot like a bad attempt at premature optimization.

-Paul