CODEWITHSUNDEEP
javaiooperating-system
Ivan Medina
Ivan Medina

Reputation: 11

Alternative to java.nio.file.Path in Java6 for OS File system Flexibility

I am backporting a code to Java SE6 and I am looking to have a OS agnostic file retrieval for my code. I already have a code on SE7 that works great.

This is the way I am using it on Java SE7.

      protected Properties getPropertiesFromFileSystemPath(final String filename) throws IOException {
        if (filename != null) {
          Path p = FileSystems.getDefault().getPath("");
          final InputStream inputStream = new FileInputStream(p.resolve(filename).toFile());
          return getProperties(inputStream);
        } else {
          throw new IOException();
        }
      }

With this code I can point to a file foo\bar\file.txt or foo/bar/file.txt and will be found.

Is there is an alternative way as easy as using java.nio.file.Path in Java SE6?

Upvotes: 1

Views: 491

Answers (1)

Boschi
Boschi

Reputation: 630

If you are receiving aways a single file, using this Path concat function is an overkill.

You can use simply new FileInputStream(filename). It will work correctly on both / and \, even if you mix them up.

And it is very important that you CLOSE the input stream you opened. In java7 you can use the autocloseable function:

try (InputStream is = new FileInputStream(filename)) {
    return getProperties(is);
}

In Java6 you need to close it yourself:

InputStream is = new FileInputStream(filename);
try {
    return getProperties(is);
} finally {
    if (is != null) is.close();
}

Upvotes: 1

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