Question

I have omitted irrelevant parts of the code:

[...]
    try {
        URL url = new URL(updateUrl);
        BufferedReader input = new BufferedReader(new InputStreamReader(url.openStream()));
[...]
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
    } finally {
        input.close();
    }
[...]

The problem is that on the finally “input.close()” Eclipse says that “input cannot be resolved”.

I think it may be an scope problem, but I have seen code from other guys and it has usually this same form, so I do not know why it is not working here.

Any hints?

Thanks a lot in advance,

Answer 1

It is indeed a scope error.
Your input is declared inside the try block, so it can’t be seen inside the finally block. Declare it outside, so that it is visible to both, and you should be fine:

[...]
    BufferedReader input = null;
    try {
        URL url = new URL(updateUrl);
        input = new BufferedReader(new InputStreamReader(url.openStream()));
[...]
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
    } finally {
        if (input != null)
        {
            try {
              input.close();
            }
            catch (IOException exc)
            {
              exc.printStackTrace();
            }
        }
    }
[...]