j_server.java

一个十分好的java基础学习的课件

// ////////////////////////////////////////////////////////
// 
// J_Server.java
// 

// ////////////////////////////////////////////////////////

import java.net.*;
import java.io.*;

public class J_Server extends Thread
{
    private Socket m_socket;
    private int    m_id;     // Used to identify different thread.
    
    public J_Server(Socket s, int id)
    {
        m_socket= s;
        m_id= id;
    } // End of the constructor
    
    public void run( )
    {
        try
        {
            System.out.println("Socket["+m_id+"] connection success.");
            PrintWriter out =new PrintWriter(new BufferedWriter(
                new OutputStreamWriter(m_socket.getOutputStream( ))), true);
            out.println("Socket["+m_id+"] welcome client.");

            BufferedReader in=new BufferedReader(new InputStreamReader(m_socket.getInputStream( )));
            while (true)
            {
                String ss= in.readLine( );
                System.out.println("Socket["+m_id+"] receives: "+ss);
                int n=ss.length( );
                if (n>0)
                {
                    char c= ss.charAt(n-1);
                    if (c=='q')
                        break;
                }
            } // End of the while loop
        } // End of try
        catch ( Exception e )
        { // Process EOFException & IOException 
            System.out.println( "Something wrong happens." );
        }
        finally
        {
            try
            {
                System.out.println("Socket["+m_id+"] is closing.");
                m_socket.close( );
            }
            catch ( Exception e )
            {
            }
        } // End of the structure try/catch/finally
    } // End of method: run
    
    public static void main(String args[])
    {
        int n= 1;
        ServerSocket server= null;

        try
        { 
            server= new ServerSocket(8080);
            System.out.println( "Server start." );
        }
        catch (IOException e)
        {
        }

        while (true)
        {
            try
            {
                System.out.println("Wait NO. "+n+" connection." );
                Socket s= server.accept( );
                J_Server t=new J_Server(s, n++);
                t.start( );
            }
            catch (IOException e)
            {
            }
        } // End of loop: while
    } // End of method: main

} // End of class: J_Server