HTTP POST and GET in plain Java

HttpStuff.java

import java.io.*;
import java.net.*;
import java.util.Scanner;

import static java.nio.charset.StandardCharsets.UTF_8;

public class HttpStuff {

    public static void main(String[] args) throws IOException {
        System.out.println(post("http://example.com/", "foo=bar&baz=moo"));
        System.out.println(get("http://example.com/?stuff"));
    }

    static String post(String url, String content) throws IOException {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Content-Length", String.valueOf(content.length()));

        OutputStream os = conn.getOutputStream();
        os.write(content.getBytes(UTF_8));
        InputStream is = conn.getInputStream();
        String result = convertStreamToString(is);

        os.flush();
        os.close();
        is.close();
        conn.disconnect();
        return result;
    }

    static String get(String url) throws IOException {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setDoInput(true);
        conn.setRequestMethod("GET");

        InputStream is = conn.getInputStream();
        String result = convertStreamToString(is);

        is.close();
        conn.disconnect();
        return result;
    }

    static String convertStreamToString(InputStream is) {
        Scanner s = new Scanner(is).useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
    }
}