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Sending a POST Request Using a Socket

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.net.InetAddress; import java.net.Socket; import java.net.URLEncoder; public class Main {   public static void main(String[] argv) throws Exception {     String data = URLEncoder.encode("key1", "UTF-8") + "=" + URLEncoder.encode("value1", "UTF-8");          Socket socket = new Socket("127.0.0.1", 8080);     String path = "/servlet";     BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8"));     wr.write("POST " + path + " HTTP/1.0\r\n");     wr.write("Content-Length: " + data.length() + "\r\n");     wr.write("Content-Type: application/x-www-form-urlencoded\r\n");     wr.write("\r\n");     wr.write(data);     wr.flush();     BufferedReader rd = new BufferedReader(new InputStreamReader(socket.getInputStream()));     String line;     while ((line = rd.readLine()) != null) {       System.out.println(line);     }     wr.close();     rd.close();   } }