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testing a stringtokenizer

4 replies on 1 page. Most recent reply: Nov 8, 2002 2:53 PM by Daniel Ray

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ben

Posts: 57
Nickname: loftty
Registered: Oct, 2002

testing a stringtokenizer

Posted: Nov 8, 2002 2:39 AM

any help please
i have a text file to read in, then i have put it though a stringtokenizer with a comma as a delimeter, and i was hopeing that i can test each line to see if there is no text between each delimeter like so (hello,how,,,you)
after (how) there are three commas so i want the output to print an empty string.
any suggestions please ben

Ramu

Posts: 29
Nickname: sripoorna
Registered: Oct, 2002

Re: testing a stringtokenizer

Posted: Nov 8, 2002 4:38 AM

hi ben
,
use the code
String str_Temp = "hello,how,,,you";
StringTokenizer stoken = new StringTokenizer(str_Temp,",");
while(stoken.hasMoreElements())
{
String str_Temp1 = stoken.nextToken();
if(str_Temp1.equals(""))
{
System.out.println("empty string found");
OR
continue;
}
else
System.out.println("non empty string found"+str_Temp1);
}

ben

Posts: 57
Nickname: loftty
Registered: Oct, 2002

Re: testing a stringtokenizer

Posted: Nov 8, 2002 4:50 AM

thanks ramu
but i have already got that in my code
what i need to do is if the text file does not have any text between two delimeters (comma) i want it to print out the empty space what should be between two delimeters
any more suggestions
thanks ramu
ben

Daniel Ray

Posts: 53
Nickname: budoray
Registered: Oct, 2002

Re: testing a stringtokenizer

Posted: Nov 8, 2002 2:53 PM

Try this.

Declare a global variable outside your for loop ie String pad = ""; In your if test for empty text .. when true .. say pad += " "; Add an else that resets pad = ""; Then print pad when you need to.

Note: I haven't tested to see if this will work. I'm supposed to be working <g>

Daniel Ray

Posts: 53
Nickname: budoray
Registered: Oct, 2002

Re: testing a stringtokenizer

Posted: Nov 8, 2002 2:53 PM

Err .. outside your while loop <g>

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