How can I unlock a specific file from TAR using apache commons?

I am using Apache Commons 1.4.1 library to unpack ".tar" files.

Problem: I don't need to extract all files. I need to extract specific files from a specific location into a tar archive. I only need to extract a few .xml files where the TAR file size is around 300MB and it is a waste of resources when unpacking the entire content.

I am stuck and confused, should I be doing a nested directory, or is there some way?

Note. the location of the .XML (required files) is always the same.

TAR structure:

directory:E:\Root\data
 file:E:\Root\datasheet.txt
directory:E:\Root\map
     file:E:\Root\mapers.txt
directory:E:\Root\ui
     file:E:\Root\ui\capital.txt
     file:E:\Root\ui\info.txt
directory:E:\Root\ui\sales
     file:E:\Root\ui\sales\Reqest_01.xml
     file:E:\Root\ui\sales\Reqest_02.xml
     file:E:\Root\ui\sales\Reqest_03.xml
     file:E:\Root\ui\sales\Reqest_04.xml
directory:E:\Root\ui\sales\stores
directory:E:\Root\ui\stores
directory:E:\Root\urls
directory:E:\Root\urls\fullfilment
     file:E:\Root\urls\fullfilment\Cams_01.xml
     file:E:\Root\urls\fullfilment\Cams_02.xml
     file:E:\Root\urls\fullfilment\Cams_03.xml
     file:E:\Root\urls\fullfilment\Cams_04.xml
directory:E:\Root\urls\fullfilment\profile
directory:E:\Root\urls\fullfilment\registration
     file:E:\Root\urls\options.txt
directory:E:\Root\urls\profile

      

        
        
        
      

    

Limitation: I cannot use JDK 7 and stick with the Apache community library.

My current solution:

public static void untar(File[] files) throws Exception {
        String path = files[0].toString();
        File tarPath = new File(path);
        TarEntry entry;
        TarInputStream inputStream = null;
        FileOutputStream outputStream = null;
        try {
            inputStream = new TarInputStream(new FileInputStream(tarPath));
            while (null != (entry = inputStream.getNextEntry())) {
                int bytesRead;
                System.out.println("tarpath:" + tarPath.getName());
                System.out.println("Entry:" + entry.getName());
                String pathWithoutName = path.substring(0, path.indexOf(tarPath.getName()));
                System.out.println("pathname:" + pathWithoutName);
                if (entry.isDirectory()) {
                    File directory = new File(pathWithoutName + entry.getName());
                    directory.mkdir();
                    continue;
                }
                byte[] buffer = new byte[1024];
                outputStream = new FileOutputStream(pathWithoutName + entry.getName());
                while ((bytesRead = inputStream.read(buffer, 0, 1024)) > -1) {
                    outputStream.write(buffer, 0, bytesRead);
                }
                System.out.println("Extracted " + entry.getName());
            }

        }