Question

I’m having some issues creating a file within a folder in the cwd – I’ve recently switched from windows to mac, and it appears as though there are some subtle differences in how files are to be created.

    String servername = "123";
    URL url = null;
    URLConnection con = null;
    int i;
    try {
            File parentFolder = new File("test2");
            System.out.println("folder.exists():"+folder.exists()); // true
            System.out.println("folder.isDirectory():"+folder.isDirectory()); // true

            url = new URL("http://"+servername+".foo.com:8080/foo.bar");
            con = url.openConnection();
            File file = new File(parentFolder, servername+"the_file.out");

            file.getParentFile().mkdirs();

            BufferedInputStream bis = new BufferedInputStream(
                            con.getInputStream());
            BufferedOutputStream bos = new BufferedOutputStream(
                            new FileOutputStream(file.getName()));
            while ((i = bis.read()) != -1) {
                    bos.write(i);
            }
            bos.flush();
            bis.close();
    } catch (MalformedInputException malformedInputException) {
            malformedInputException.printStackTrace();
    } catch (IOException ioException) {
            ioException.printStackTrace();
    }

In this code snippet, I’m downloading a file from some webpage and trying to save it in a folder called ‘test2’ which is in my project root.

The result:

MyProject
  test2
  src
  build
  nbproject
  123the_file.out // why doesn't it go into test2?

As a note, the file downloads and writes correctly, but again, not in the right dir.

Answer 1

Replace

new FileOutputStream(file.getName()));

with

new FileOutputStream(file);

Your file object contains both the folder and name of the file. You need to pass the entire file object to FileOutputStream. The way you have it coded you are only passing the name string 123the_file.out so FileOutputStream interprets it as relative to your cwd