current community

your communities

more stack exchange communities

Stack Exchange
tour help
stack overflow careers
Take the 2-minute tour ×
Stack Overflow is a question and answer site for professional and enthusiast programmers. It's 100% free, no registration required.
up vote 0 down vote favorite

So I'm trying to read some numbers from a file and put them into an array. I've been reading about people having problems with whitespace, so using trim, I did it like this:

String[] tokens = new String[length];
 for(int i = 0; i<length;i++){
    String line = fileReader.nextLine();
    line = line.trim();
    tokens = line.split("");
    }

But the first element this array (token[0]) becomes empty. Am I using the split function wrong?

share|improve this question
    
You are converting line to character array. You want to split the given line with space? –  Achintya Jha Apr 19 '13 at 10:40
    
MAybe change split function parameter –  Ugur Apr 19 '13 at 10:41
1  
Yes, the argument to split(...) is the (regex) delimiter. So if your input is eg. 1, 2, 4, 8 you could do split( "," ).' –  Anders R. Bystrup Apr 19 '13 at 10:42
    
Ok, thank you very much, I will work with the delimiter now. –  Bjørn Haugerud Apr 19 '13 at 10:43

2 Answers 2

up vote 1 down vote accepted

You need to tell the split method what character it should split on. Try this:

tokens = line.split(" "); //split on a space character
share|improve this answer
    
Yeah! Thank you! Sometimes it's just right there in front of me! –  Bjørn Haugerud Apr 19 '13 at 10:48
up vote 1 down vote 
tokens = line.split(" ");

You forgot whitespace.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.