OpenKeyVal simple getting and setting in plainest Java

openkeyval.java

import java.net.*;
import java.io.*;

public class HelloOpenKeyVal {
    static String base_url = "http://openkeyval.org/";

	public static void main(String[] args) throws Exception {
                //System.out.println(get("cowboytomash10"));
		//System.out.println(post("cowboytomash10", "what the fuck, man"));
	}
	
	public static String get(String key) throws Exception {
		String returned = "";
		URL okv = new URL(base_url + key);
		URLConnection conn = okv.openConnection();
		BufferedReader in = new BufferedReader(
                new InputStreamReader(
                conn.getInputStream()));
		String inputLine;
		while ((inputLine = in.readLine()) != null) 
            returned += inputLine;
        in.close();
		
		return returned;
	}
	
	public static String post(String key, String value) throws Exception {
		String returned = "";
		// Construct data
	    String data = URLEncoder.encode("data", "UTF-8") + "=" + URLEncoder.encode(value, "UTF-8");
        System.out.println(data);
	    // Send data
	    URL url = new URL(base_url + key);
	    URLConnection conn = url.openConnection();
	    conn.setDoOutput(true);
	    OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
	    wr.write(data);
	    wr.flush();

	    // Get the response
	    BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
	    String inputLine;
	    while ((inputLine = rd.readLine()) != null) 
            returned += inputLine;
	    wr.close();
	    rd.close();
	    return returned;
	}

}