title: “java.lang.UnsupportedOperationException: Not supported yet.”
body: <p>I am making a TCP project in java.
  I want to build a TCP connection in java with serial communication from a microcontroller.
  I want to do that with Multithreading.</p>
  
  <p>But when I run my server and client , and I send a message from my client to my server. Then I have the following error in the TCPserver :</p>
  
  <pre><code>"Exception in thread "Thread-0" java.lang.UnsupportedOperationException: Not supported yet.
      at serialPort.openPort(serialPort.java:30)
      at Client.run(TCPserver.java:63)"
  </code></pre>
  
  <p>Here is my TCPservercode :</p>
  
  <pre><code>import java.io.*;
  import java.net.*;
  import java.io.IOException;
  import jssc.SerialPort;
  import jssc.SerialPortException;
  import java.util.Scanner; 
  import java.util.logging.Level;
  import java.util.logging.Logger;
  import jssc.SerialPortList;
  import jssc.*;
  import jssc.SerialPort; 
  import jssc.SerialPortException;
  
  class TCPServer
  {
      public static void main(String argv[]) throws Exception
      {
          ServerSocket welcomeSocket = new ServerSocket(6789);
          SerialPort serialPort = new SerialPort("COM3");
  
          while(true)
          {
              Socket connectionSocket = welcomeSocket.accept();
              if (connectionSocket != null)
              {
                  Client client = new Client(connectionSocket);
                  client.start();
              }   
          }
      }
  }
  
  class Client extends Thread
  {
      private Socket connectionSocket;
      private String clientSentence;
      private String capitalizedSentence;
      private BufferedReader inFromClient;
      private DataOutputStream outToClient;
  
      public Client(Socket c) throws IOException
      {
          connectionSocket = c;
      }
  
      public void run() 
      {
          try
          {       
              inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
              outToClient = new DataOutputStream(connectionSocket.getOutputStream());
              clientSentence = inFromClient.readLine();
              capitalizedSentence = clientSentence.toUpperCase() + '\n';
              outToClient.writeBytes(capitalizedSentence);
              serialPort.openPort();//Open serial port
  
              serialPort.setParams(SerialPort.BAUDRATE_115200, 
                               SerialPort.DATABITS_8,
                               SerialPort.STOPBITS_1,
                               SerialPort.PARITY_NONE);
              System.out.println("Received: " + clientSentence);
              serialPort.writeString( clientSentence + "\r\n");
              //Thread.sleep(1000);
              String buffer = serialPort.readString();//Read 10 bytes from seri
              // Thread.sleep(1000);
  
              outToClient.writeBytes(buffer);
              System.out.println(buffer);
              serialPort.closePort();
              connectionSocket.close();
  
          } catch (IOException ex) {
              Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
          }
  
      }
  
  }
  </code></pre>
  
  <p>and my TCPclient code : </p>
  
  <pre><code>import java.io.*;
  import java.net.*;
  
  class TCPClient
  {
      public static void main(String argv[]) throws Exception
      {
          while(true){
          String sentence;            
          String modifiedSentence;    
  
          Socket clientSocket = new Socket("localhost", 6789);
  
          BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
          DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());        
          BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
  
          sentence = inFromUser.readLine();
          outToServer.writeBytes(sentence + '\n');
          modifiedSentence = inFromServer.readLine();
          System.out.println("FROM SERVER: " + modifiedSentence);
  
          clientSocket.close();
          }
      }
  }
  </code></pre>
  
  <p>My original serial communication code :</p>
  
  <pre><code>package sensornode_Jens;
  
  import java.io.IOException;
  import jssc.SerialPort;
  import jssc.SerialPortException;
  import java.util.Scanner; 
  import jssc.SerialPortList;
  import jssc.*;
  import jssc.SerialPort; import jssc.SerialPortException;
  
  
  public class Main {
  
  public static void main(String[] args) {
  
      // getting serial ports list into the array
  String[] portNames = SerialPortList.getPortNames();
  
  if (portNames.length == 0) {
      System.out.println("There are no serial-ports :( You can use an emulator, such ad VSPE, to create a virtual serial port.");
      System.out.println("Press Enter to exit...");
      try {
          System.in.read();
      } catch (IOException e) {
            e.printStackTrace();
      }
      return;
  }
  
  for (int i = 0; i &lt; portNames.length; i++){
      System.out.println(portNames[i]);
      ////
  
      SerialPort serialPort = new SerialPort("/dev/ttyACM0");
      try {
          serialPort.openPort();//Open serial port
          serialPort.setParams(SerialPort.BAUDRATE_115200, 
                               SerialPort.DATABITS_8,
                               SerialPort.STOPBITS_1,
                               SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0);
          Scanner input = new Scanner(System.in);
          String scommand = input.nextLine();
  
          serialPort.writeString( scommand + "\r\n");
  
          String buffer = serialPort.readString();//Read 10 bytes from serial port
  
          System.out.println(buffer);
  
          serialPort.closePort();
  
      }
      catch (SerialPortException ex) {
          System.out.println(ex);
      }
  }
  }
  }
  </code></pre>
  
  <p>Can anybody help me?</p>