How to get String[] String's to a seperate String?

Question

I have a list of URL's added to a String[] with this.

try {
    Elements thumbs = jsDoc.select("div.latest-media-images img.latestMediaThumb");
    List<String> thumbLinks = new ArrayList<String>(); 
    for(Element thumb : thumbs) {
        thumbLinks.add(thumb.attr("src"));
    }
    for(String thumb : thumbLinks) {
        System.out.println(thumbLinks.get(1));
    }
}

How can i add each String that is loaded into a separate String?

EDIT:

SO as the images are loaded into the thumbLinks list. I want to get each link to a seperate

String url1;
String url2;
String url3;

Separate Strings called what?

Oliver Charlesworth
– Oliver Charlesworth

2011-09-19 23:45:10 +00:00
Commented Sep 19, 2011 at 23:45 — Oliver Charlesworth
– Oliver Charlesworth, Commented Sep 19, 2011 at 23:45
Can you give an example of what you're trying to achieve?

nhaarman
– nhaarman

2011-09-19 23:45:59 +00:00
Commented Sep 19, 2011 at 23:45 — nhaarman
– nhaarman, Commented Sep 19, 2011 at 23:45

Oliver Charlesworth · Accepted Answer · 2011-09-20 00:13:24Z

1

If you expect a fixed number of items, and you have a fixed number of String variables, you have little choice but something like:

String url0 = thumbLinks.get(0);
String url1 = thumbLinks.get(1);
...
String url5 = thumbLinks.get(5);

Well, you could do something grim with reflection, I guess. But probably best to avoid this at all.

edited Sep 20, 2011 at 0:13

answered Sep 19, 2011 at 23:46

Oliver Charlesworth

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14 Comments

coder_For_Life22 Over a year ago

So you think this is a bad idea?

Oliver Charlesworth Over a year ago

@coder: Yes, probably. Why would you want to do this, when it would be simpler to use arrays or containers?

coder_For_Life22 Over a year ago

This is the syntac error i get when i use thumbLinks[0] The type of the expression must be an array type but it resolved to List<String>

Oliver Charlesworth Over a year ago

@coder: What version of Java are you using? You may need to use String url0 = thumbLinks.get(0);.

NullUserException Over a year ago

I don't think this is possible even with reflection.

|

Priyanjan · Accepted Answer · 2011-09-20 00:05:44Z

0

take a String array of the size of your ArrayList object - thumbLinks in your case. take an int variable and initialize it with zero. I have made some changes in your code just have a look:

try{



        Elements thumbs = jsDoc.select("div.latest-media-images img.latestMediaThumb");
        List<String> thumbLinks = new ArrayList<String>();
        for(Element thumb : thumbs) {
            thumbLinks.add(thumb.attr("src"));
        }

        String[] urls = new String[thumbLinks.size()];
        int x =0;
        for(String thumb : thumbLinks) {
            urls[x++] = thumb;
        }
    }catch(Excpetion e){

    }

use urls for your purpose

answered Sep 20, 2011 at 0:05

Priyanjan

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Comments

nloko · Accepted Answer · 2011-09-20 00:44:48Z

0

ArrayList has method public <T> T[] toArray(T[] a) that you can call as described below on thumbLinks:

String[] url = new String[thumbLinks.size()];
url = thumbLinks.toArray(url);

Then, you will have an array of strings that you can access like this:

System.out.println(url[0]);
System.out.println(url[1]);
System.out.println(url[2]);
// etc, etc. all the say up to thumbLinks.size() - 1

While this is not exactly what you've asked for, it's pretty much the same thing. If you really want variables named url1, url2, url3, etc., you're likely going to have to code it line by line for every element in the list.

Just as an aside, you don't need an array to access the elements of your thumbLinks list directly. You can already do this:

System.out.println(thumbLinks.get(0));
System.out.println(thumbLinks.get(1));
System.out.println(thumbLinks.get(2));
// etc. all the way up to thumbLinks.size() - 1

edited Sep 20, 2011 at 0:44

answered Sep 20, 2011 at 0:09

nloko

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3 Comments

coder_For_Life22 Over a year ago

IS there a way to add a String for each element it finds?

nloko Over a year ago

Referencing the above code, every element in the url array is a variable of type String and the toArray method will create an element for every element in the thumbLinks list. Is that what you're asking?

nloko Over a year ago

@coder_For_Life22 with all this being said, I'm not sure there is much of a reason to create an array. You already have the thumbLinks list where you can reference any element with thumbLinks.get(x) where x is any integer from 0 to thumbLinks.size() - 1

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