Exception in thread "Main" java.lang.NoSuchMethodError: main
Compiles just fine, but when try to run is throws back this error : "Exception in thread "Main" java.lang.NoSuchMethodError: main"
import java.io.*;
import java.net.*;
import java.util.*;
public class Server
{
ArrayList clientOutputStreams;
public void go()throws IOException
{
//clientOutputStreams = new ArrayList();
try
{
ServerSocket serverSock = new ServerSocket(4999);
while (true)
{ // set up the server writer function and then begin at the same
// the listener using the Runnable and Thread
Socket clientSock = serverSock.accept();
PrintWriter writer = new PrintWriter(clientSock.getOutputStream());
//clientOutputStreams.add(writer);
// use a Runnable to start a 'second main method that will run
// the listener
Thread listener = new Thread(new ClientHandler(clientSock));
listener.start();
System.out.println("got a connection");
} // end while
} // end try
catch (Exception ex)
{
System.out.println("error making a connection");
} // end catch
} // end go()
public class ClientHandler implements Runnable
{
BufferedReader reader;
Socket sock;
public ClientHandler(Socket clientSocket)
{ // new inputStreamReader and then add it to a BufferedReader
try
{
sock = clientSocket;
InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(isReader);
} // end try
catch (Exception ex)
{
System.out.println("error beginning StreamReader");
} // end catch
} // end ClientHandler()
public void run()
{
String message;
try
{
while ((message = reader.readLine()) != null)
{
System.out.println("read" + message);
tellEveryone(message);
} // end while
} // end try
catch (Exception ex)
{
System.out.println("lost a connection");
} // end catch
} // end run()
} // end class ClientHandler
public void tellEveryone(String message)
{ // sends message to everyone connected to server
Iterator it = clientOutputStreams.iterator();
while (it.hasNext())
{
try
{
PrintWriter writer = (PrintWriter) it.next();
writer.println(message);
writer.flush();
} // end try
catch (Exception ex)
{
System.out.println("error telling everyone");
} // end catch
} // end while
} // end tellEveryone()
} // end class Server
