How to Cache InputStream for Multiple Use

Question

I have an InputStream of a file and i use apache poi components to read from it like this:

POIFSFileSystem fileSystem = new POIFSFileSystem(inputStream);
         


        

Answer 1

public static void main(String[] args) throws IOException {
    BufferedInputStream inputStream = new BufferedInputStream(IOUtils.toInputStream("Foobar"));
    inputStream.mark(Integer.MAX_VALUE);
    System.out.println(IOUtils.toString(inputStream));
    inputStream.reset();
    System.out.println(IOUtils.toString(inputStream));
}

This works. IOUtils is part of commons IO.