public static  void copyResource(Project theProject,
    String theResourceName,
    File theDestFile) throws IOException 
{
        InputStream in =
            ResourceUtils.class.getResourceAsStream(theResourceName);
        if (in == null)
        {
            throw new IOException("Resource '" + theResourceName
                + "' not found");
        }
        OutputStream out = null;
        try
        {
            out = new FileOutputStream(theDestFile);
            byte buf[] = new byte[4096];
            int numBytes = 0;
            while ((numBytes = in.read(buf))  > 0)
            {
                out.write(buf, 0, numBytes);
            }
        }
        finally
        {
            if (in != null)
            {
                in.close();
            }
            if (out != null)
            {
                out.close();
            }
        }
}

Copies a container resource from the JAR into the specified file.

 public static  void copyResource(Project theProject,
    String theResourceName,
    File theDestFile,
    FilterChain theFilterChain) throws IOException 
{
        InputStream resource =
            ResourceUtils.class.getResourceAsStream(theResourceName);
        if (resource == null)
        {
            throw new IOException("Resource '" + theResourceName
                + "' not found");
        }
        BufferedReader in = null;
        BufferedWriter out = null;
        try
        {
            ChainReaderHelper helper = new ChainReaderHelper();
            helper.setBufferSize(8192);
            helper.setPrimaryReader(new BufferedReader(
                new InputStreamReader(resource)));
            Vector filterChains = new Vector();
            filterChains.add(theFilterChain);
            helper.setFilterChains(filterChains);
            helper.setProject(theProject);
            in = new BufferedReader(helper.getAssembledReader());
            out = new BufferedWriter(new FileWriter(theDestFile));
            String line = null;
            while ((line = in.readLine()) != null)
            {
                if (line.length() == 0)
                {
                    out.newLine();
                }
                else
                {
                    out.write(line);
                    out.newLine();
                }
            }
        }
        finally
        {
            if (in != null)
            {
                in.close();
            }
            if (out != null)
            {
                out.close();
            }
        }
}

Copies a container resource from the JAR into the specified file, thereby applying the specified filters.

 public static File getResourceLocation(String theResourceName) 
{
        File file = null;
        URL url = ResourceUtils.class.getResource(theResourceName);
        if (url != null)
        {
            String urlString = url.toString();
            if (urlString.startsWith("jar:file:"))
            {
                int pling = urlString.indexOf("!");
                String jar = urlString.substring(9, pling);
                file = new File(URLDecoder.decode(jar));
            }
            else if (urlString.startsWith("file:"))
            {
                int tail = urlString.indexOf(theResourceName);
                String dir = urlString.substring(5, tail);
                file = new File(URLDecoder.decode(dir));
            }
        }
        return file;
}

Search for the given resource and return the directory or archive that contains it.

Doesn't work for archives in JDK 1.1 as the URL returned by getResource doesn't contain the name of the archive.