Anyone familar with this java error?

[bubbadu]

So I have a big project do tonight at midnight, and I keep geting this error when trying to run the program.

Exception in thread "main" java.util.NoSuchElementException
at java.util.StringTokenizer.nextToken(StringTokenizer.java:235)

I can post the code, but its geting pretty long.. if anyone is familar with String Tokenizer's let me know.. thanks!

 

[JayHu]

are you getting it because you're not checking to see if there are any more tokensin the tokenizer to get?

 

[Ameesh]

this is just a thought but looking at the exception, maybe there are no more tokens left in your string?

 

[Platypus]

post the code for the string tokenizer

 

[Ameesh]

Originally posted by: CorporateRecreation
post the code for the string tokenizer

let him fix it, this is a boneheaded question

 

[bubbadu]

public class PhoneMain {

public static void main(String args[]) {
//declare PhoneBook phone1
PhoneBook phone1 = new PhoneBook();

try{
//declare bufferedReader inFile to read from file phone.txt
BufferedReader inFile = new BufferedReader(new FileReader("phone.txt"));
//read one line of inFile and set equal to a string
String e1Str = inFile.readLine();
//use while loop to fill array with contents of inFile
int i = 0;
while (e1Str != null) {
//declare StringTokenizer st consisting of e1Str
StringTokenizer st = new StringTokenizer(e1Str);
//set first token of st equal to a new string for first name
String firstT = st.nextToken();
//set next token of st equal to a new string for last name
String lastT = st.nextToken();
//set next token of st equal to a new string for the number
String numT = st.nextToken();
//call method addEntry of phonebook and enter the info as a new entry
phone1.addEntry(firstT, lastT, numT);
//read next line of inFile and set equal to e1Str
e1Str = inFile.readLine();
}

 

[Ameesh]

heres a hint, print out the value of firstT, lastT, and numT right after you read them

 

[Platypus]

Originally posted by: Ameesh

Originally posted by: CorporateRecreation
post the code for the string tokenizer

let him fix it, this is a boneheaded question

yes father :brokenheart:

 

[bubbadu]

I tried that, it printed each of the names, but then crashed right after that

 

[JayHu]

well which line does it crash at?
ie specific line of code that crashes the program.

 

[bubbadu]

Line 44, which is the line of the first tokenizer

 

[MikeMike]

which one is line 44? deffinately cant count that on here, tell us, which line it is, in relation to what you posted.

MIKE

 

[JayHu]

Originally posted by: bubbadu
Line 44, which is the line of the first tokenizer

what line of code is it? what code is it trying to execute?

 

[screw3d]

This sounds like a simple problem to solve. In fact the problem is that StringTokenizer's nextToken() method is reading an empty token, thus returning a null. You just need to handle it like "if token=null, don't read it".

More details!

 

[bubbadu]

Sorry guys... line 44 is this

String FirstName = st.nextToken();

Its taking the file, reading the firstname, and putting it into a string.

 

[JayHu]

try printing the e1str after you read it inside the while loop.

maybe there is a line with a space on it in your text file, thus not returning an eof (null) for the readline method.

 

[Crusty]

You need to specify a delimeter with your Tokenizer.

 

[bubbadu]

OK awesome thanks I think I just got it

 

[JayHu]

Originally posted by: bubbadu
OK awesome thanks I think I just got it

well what was it?

 

[screw3d]

Originally posted by: MCrusty
You need to specify a delimeter with your Tokenizer.

No you don't need to. There is a default delimiter of all white spaces.

 

[bubbadu]

Originally posted by: JayHu

Originally posted by: bubbadu
OK awesome thanks I think I just got it

well what was it?

The phone.txt file was fvcked up.. i had to redl it Just like JayHu said

 

[JayHu]

Originally posted by: bubbadu

Originally posted by: JayHu

Originally posted by: bubbadu
OK awesome thanks I think I just got it

well what was it?

The phone.txt file was fvcked up.. i had to redl it Just like JayHu said

cool..
just a suggestion though, you could conceivable make sure that each line has 3 tokens on it before trying to get them.
just use countTokens() to make sure it's 3 before continuing.
But if you're guaranteed to have 3 strings per line then go ahead. (i think you mentioned it was an assignment, make sure the assignment states you can assume this)