gistfile1.java

public String load(String uri) throws IOException, InterruptedException {
    final String LINE_SEPA = System.getProperty("line.separator");
    Process p = Runtime.getRuntime().exec(
	new String[] { "/path/to/ruby",
		       "/path/to/extract_content_uri.rb", uri });

    BufferedReader br = null;
    try {
	StringBuffer out = new StringBuffer();
	br = new BufferedReader(new InputStreamReader(p.getInputStream()));
	for (String line; (line = br.readLine()) != null;)
	    out.append(line + LINE_SEPA);
	if (p.exitValue() != 0)
	    return "";
	return out.toString();
    } finally {
	if (br != null)
	    br.close();
    }
}