"BindException: Address already in use" error all the time!

Question

I made a simple program that streams lines of text across the network/internet and a simple client program to display that text. The problem is, regardless of what port I choose, I always get this exception on the server's side:
C:\Users\Nathan\Desktop>java LyricalUploader
Started Listening
Bound
Started Listening
Starting.java.net.BindException: Address already in use: JVM_Bind
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
        at java.net.ServerSocket.bind(ServerSocket.java:319)
        at java.net.ServerSocket.<init>(ServerSocket.java:185)
        at java.net.ServerSocket.<init>(ServerSocket.java:97)
        at LyricalUploader.main(LyricalUploader.java:11)What bothers me is it creates the ServerSocket just fine (that's what the output saying "Bound" means) and if I replace the new LyricalThread(ss.accept()).start(); line in the code below with new LyricalThread(ss.accept()).run();, it works fine, It just can't handle more than one client. I have tried many many ports and they all have the same result. What am I doing wrong?
Here is the code:
import java.net.*;
import java.io.*;
import javax.swing.JFileChooser;
public class LyricalUploader{
public static void main(String args[]){
  ServerSocket ss = null;
  int c=0;
  try{
    while(true){
      System.out.println("Started Listening");
      ss = new ServerSocket(49625);
      System.out.println("Bound");
      new LyricalThread(ss.accept()).start();
  catch(Exception e){
    e.printStackTrace();
    System.exit(1);
import java.net.*;
import java.io.*;
public class LyricalThread extends Thread{
  Socket s = null;
  public LyricalThread(Socket so){
    s=so;
  public void run(){
    try{
      System.out.print("Starting.");
      PrintWriter out = new PrintWriter(s.getOutputStream());
      BufferedReader fin =new BufferedReader(new FileReader("Lyrics.txt"));
      System.out.print(".");
      String line = fin.readLine();
      System.out.println(".Done!");
      while(true){
        while(line!=null){
          out.println(line);
          //System.out.println(line);
          line=fin.readLine();
          Thread.sleep(1600);
        fin.close();
        System.out.println("End of Lyrics.txt file.");
        fin =new BufferedReader(new FileReader("Lyrics.txt"));
    catch(Exception e){
      e.printStackTrace();
      return;
  public static void main(String arg[]){
    new LyricalThread(null).start();
}And the Client code:
import java.net.*;
import java.io.*;
import javax.swing.JFileChooser;
public class LyricalReader{
  public static void main(String args[]) throws Exception{
    Socket s = null;
    BufferedReader sin = null;
    FileOutputStream out = null;
    try{
      System.out.println("Started");
      System.out.print("Connecting...");
      s = new Socket("2.9.19.94",49625);
      System.out.println("Done!");
      System.out.print("Finding song...");
      sin = new BufferedReader(new InputStreamReader(s.getInputStream()));
      String line = sin.readLine();
      System.out.println("Done!\nStarted reading:\n\n\n\n\n\n");
      while(true){
        System.out.println(line);
        line = sin.readLine();
    }catch(Exception e){
      e.printStackTrace();
      sin.close();
      s.close();
      out.close();
    System.exit(0);
}

Answer 1

Hi,
your Server must create only one ServerSocket, not multiples! So write
  try{
    ss = new ServerSocket(49625);
    System.out.println("Bound");
    while(true){
      System.out.println("Started Listening");
      new LyricalThread(ss.accept()).start();
  catch(Exception e){
    e.printStackTrace();
    System.exit(1);
  }and take the creation of the ServerSocket outside the while-loop.
Martin