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Thread: Iterator & ArrayList

  1. #1
    Junior Member
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    Default Iterator & ArrayList

    Hi there,
    I have an ArrayList<String> and i'm using an Iterator loop to display all the strings one by one
    public void displayAllTitles(){
            Iterator<String> it = bestSellersNames.iterator();
            while(it.hasNext()){
                it.next();
                System.out.println(it);
            }
    }
    there's a problem because when I call the method it displays the memory address of the string.
    How I can display the string itself without using another method?

    Thanks
    Last edited by raabhim; March 24th, 2012 at 06:18 PM.


  2. #2
    Super Moderator Sean4u's Avatar
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    Default Re: Iterator & ArrayList

    when I call the method it displays the memory address of the string
    No it doesn't. String has a toString() method (read the Java SE API doc at Object.toString() and String.toString()). Your code says:

    System.out.println(it);

    What is 'it'? It's not a String! The String you want is returned on the line before by it.next()

  3. The Following User Says Thank You to Sean4u For This Useful Post:

    raabhim (March 24th, 2012)

  4. #3
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    Default Re: Iterator & ArrayList

    Right! Silly me...
    it's working now
    Thanks for your help!
    public void displayAllTitles(){
            Iterator<String> it = bestSellersNames.iterator();
            while(it.hasNext()){
            String b =  it.next();
                System.out.println(b);
            }
    }
    Last edited by raabhim; March 24th, 2012 at 06:18 PM.

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